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Drivetrain Component Manufacturers

Last updated: January 2026

This directory lists 97 drivetrain component manufacturers across the United States, from precision gear cutters to complete transmission assembly providers.

Buyers engage these manufacturers to solve critical engineering and production challenges, such as achieving desired power density within stringent packaging constraints, reducing parasitic losses, or developing custom gearboxes for specialized industrial or electric vehicle applications. They need partners who can execute complex multi-axis machining, heat treatment, and post-processing for components ranging from helical gears to differential cases.

The spectrum of suppliers includes dedicated gear houses focusing solely on tooth cutting and grinding, specialized shaft and axle manufacturers, and full-service component producers capable of machining complex transmission housings and internal components. Some even offer integration services for planetary gearsets or complete driveline modules, providing a single source for multiple sub-assemblies.

Buyers should arrive with detailed engineering drawings, material specifications, and anticipated annual volumes. Suppliers, in turn, expect a clear understanding of the component’s end-use environment and performance requirements, including any specific certifications like IATF 16949, to accurately quote and assess manufacturability.

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Company Directory

97 companies nationwide

Sullivan, MO

Ace Manufacturing & Parts Company, based in Sullivan, MO, manufactures heavy-duty clutches and clutch components for various applications. They produce a full line of new and remanufactured clutches, pressure plates, flywheels, and custom clutch solutions. The company supplies both major OEMs and the aftermarket with durable drivetrain parts.

Lancaster, CA

Based in Lancaster, CA, Advanced Clutch Technology specializes in manufacturing high-performance driveline components for the automotive industry. Since 1994, the company has focused on delivering specialized clutch and drivetrain solutions, catering to vehicle performance needs with advanced technology and engineering expertise.

Livermore, CA

Advantage Metal Products (AMP) in Livermore, CA, specializes in precision CNC machining and custom sheet metal fabrication for complex assemblies and tight-tolerance parts. They produce OEM automotive components, including drivetrain and chassis parts, serving the automotive, aerospace, medical, and defense industries with engineering support and turnkey assembly.

Aichi Forge USA, Inc. manufactures high-strength drivetrain components, including HD drive axle gearing, and powertrain components like crankshafts and connecting rods. Specializing in forging, the company serves heavy-duty automotive, truck & bus, industrial, agriculture, construction, and general aviation applications for ICE and hybrid propulsion.

Walton Hills, OH

Based in Walton Hills, OH, American Industrial Transmission, Inc. supplies new and remanufactured industrial transmissions, torque converters, steer axles, and drive axles. They also provide rebuild kits, gasket and seal kits, and drive units. Services cater to lift trucks, small construction machinery, and various industrial equipment applications.

Foster City, CA

Based in Foster City, CA, American Precision Gear Co., Inc. specializes in custom precision gear manufacturing and high-volume production. They provide CNC gear hobbing, shaping, grinding, and machining for miniature, aerospace, medical, and robotics applications, offering complete fabrication or gear cutting services.

Anaheim, CA

Based in Anaheim, CA, Anaheim Gear manufactures and rebuilds various drivetrain components. Their product offerings include chains, housings, input and main shafts, planetaries, and transfer case overhaul kits. The company also provides rebuilt transfer cases, serving industrial and commercial customers with essential power transmission parts.

Apex Dynamics Inc. is a manufacturer specializing in high-quality planetary gearboxes, critical drivetrain components for various industrial applications. With over two decades of accumulated experience, the company produces precision-engineered solutions. It serves as a direct provider of robust motion control components for businesses.

La Porte, IN

Based in La Porte, IN, B&B Manufacturing provides power transmission parts and components for industries including Medical and 3D Printing. They specialize in both catalog and custom-engineered drivetrain solutions, offering timing pulleys, synchronous belts, V-belt sheaves, bushings, and roller chain sprockets, ensuring reliable performance and durability.

Macon, GA

Based in Macon, GA, B&D Industrial manufactures high-quality, precision-crafted gears and racks. The company serves OEM manufacturing partners and various industrial applications, providing critical components for drivetrain systems and machinery. They focus on precision production for robust industrial performance and reliability.

Rancho Cucamonga, CA

Based in Rancho Cucamonga, CA, California Driveline Inc. specializes in manufacturing, repairing, and balancing drivelines. The company provides drivetrain components for a diverse clientele, including automotive 4x4s, high-performance vehicles, heavy-duty trucks, and industrial and agricultural applications. They offer comprehensive driveline services.

California Motorsports Inc specializes in Porsche transmission service and repair, manufacturing and selling various drivetrain components. With over 35 years of experience, they provide specialized parts like their 930 Hydraulic Slave Kits for the Porsche enthusiast and repair community.

Carolina Driveline manufactures drivetrain components, including OEM-specific driveshafts, u-joints, and transmission yokes. Backed by 40+ years of engineering experience, they provide high-quality custom design and repair services. Their expertise spans diverse applications, from classic car restoration and 4x4 off-road to heavy-duty and industrial drivelines.

Prescott, AZ

Centerforce Performance Clutch manufactures high-performance clutch systems for automotive enthusiasts and OEM applications. Based in Prescott, AZ, the company designs and produces a range of clutch components found in customized and leading OEM vehicles worldwide, focusing on enhanced drivetrain performance and durability.

Rialto, CA

Based in Rialto, CA, Clutch Masters specializes in manufacturing high-quality performance clutch and flywheel systems. The company provides complete kits for drivers seeking to maximize vehicle performance, offering most parts in stock and ready to ship within 1-3 business days across the Continental US.

Anaheim, CA

Based in Anaheim, CA, Competition Clutch, LLC. specializes in manufacturing high-performance clutch systems for various vehicles. The company provides a range of clutch products, installation resources, and technical support, with services including returns and rebuilds.

Traverse City, MI

Based in Traverse City, MI, Cone Drive manufactures highly engineered drivetrain components. The company provides a wide range of gearing solutions, including worm gears, harmonic drives, cycloidal gears, planetary gears, and slew drives. These precision components serve automation, servo, NEMA motor, and solar tracking applications.

Elkhart, IN

Based in Elkhart, Indiana, Lippert manufactures axles for various industries. The company produces these essential drivetrain components for customers in the Utility Trailer, RV, and Marine Industries, emphasizing engineered products and technology.

Huntington Beach, CA

Based in Huntington Beach, CA, California Performance Transmission II custom builds 200-4R and 700-R4 transmissions and torque converters. The company provides specialized drivetrain components.

Vista, CA

Based in Vista, CA, Custom Tube Works specializes in off-road fabrication and custom tube work. Since 2009, they apply engineering and craftsmanship to produce specialized components, including custom parts that support, protect, or integrate with drivetrain systems for off-road vehicle manufacturers and custom builders.

Elkhart, IN

Based in Elkhart, IN, Dexter Group manufactures and supplies axles, doors, and venting products. The company primarily serves the utility trailer, RV, heavy duty, and recreational boating industries with various related components, focusing on critical drivetrain and structural solutions.

Milpitas, CA

Based in Milpitas, CA, Seres is a Silicon Valley company specializing in the development and manufacture of electric motors, inverters, and e-drive systems for electric vehicles. They provide comprehensive drivetrain solutions, including drive unit development, MCU development, software architecture, and test validation for automotive applications.

Heavy Duty Truck Parts, IL

This company specializes in providing new and remanufactured heavy-duty truck drivetrain components, including transmissions, differentials, PTOs, and pumps. Located in the Midwest, it serves as a supplier for robust industrial vehicle parts.

Dynatrac Products, LLC engineers, manufactures, and assembles high-performance axle assemblies and heavy-duty hub conversion kits in the USA. The company specializes in durable drivetrain components such as ProRock 44 and ProRock 60 axles and Free-Spin kits. These products cater to demanding automotive applications, including Jeep Wrangler and Dodge truck models.

San Leandro, CA

Based in San Leandro, CA, Electric Motorsport, Inc. specializes in electric propulsion systems and EV conversion kits. Since 2001, the company has developed components and solutions for electric vehicle drivetrains, serving various applications in the electric motorsports industry.

Orange, CA

Based in Orange, CA, Friedl Axle Corporation manufactures custom trailer axles and related drivetrain components. They build axles on demand with capacities from 2200 to 27500 lbs. The company serves recreational, cargo, equipment, horse, utility, and marine trailer industries, also supplying parts such as brakes, drums, hubs, and springs.

Willoughby, OH

Based in Willoughby, OH, Geartec specializes in industrial gear manufacturing. The company produces custom gears, provides precision machining services, and offers comprehensive gearbox repair. Geartec serves a diverse range of industrial clients with their expertise in drivetrain components, positioning them as a key manufacturer in the U.S.

Coral Gables, FL

GSP North America manufactures a comprehensive range of drivetrain and suspension components. They specialize in producing CV axles, intermediate shafts, wheel hub assemblies, and loaded strut assemblies. The company also offers performance axles and ATV/UTV axles, serving various automotive and powersports applications across North America.

Berkeley, CA

Based in Berkeley, CA, Hasselgren Engineering Inc. specializes in precision machining, fabrication, and engine building for combustion engine components. They provide custom parts, rebuilds, and design services, operating an in-house CNC machine shop. The company offers dyno testing and tuning for high-performance automotive drivetrain applications.

Slidell, LA

Based in Slidell, LA, Horsburgh & Scott engineers and manufactures custom gears and gearboxes for industrial applications. They provide precision manufacturing of new and replacement drivetrain components, complemented by 24/7 emergency repair services from experienced engineers and technicians.

Oceanside, CA

Hypercraft USA designs, engineers, and manufactures high-performance electric propulsion systems and motors for marine vehicles. Based in Oceanside, CA, the company produces its proprietary Stealth Drive electric motors, inverters, and battery systems, emphasizing fully integrated solutions for electrification.

Clinton Township, MI

Based in Clinton Township, MI, IDC Industries, Inc. manufactures and repairs gearboxes and power transmission equipment. They offer comprehensive standard lines, custom machining, gear cutting, and gearbox repair services for industrial drive component needs. The company serves diverse sectors, including steel, power generation, cement, pulp & paper, and mining clients.

Anaheim, CA

Instant Axles, based in Anaheim, CA, builds and installs trailer axles. The company specializes in same-day service for axle installations, repairs, and maintenance on all axle types, including drivetrain axles. Serving the Western United States, they ensure minimal downtime for commercial and car trailers.

Waukesha, WI

Based in Waukesha, WI, Machine Service, Inc. (MSI) is a manufacturer and repair specialist for industrial drive shafts, drivelines, and power transmission components. Serving industrial, marine, and vehicular manufacturers globally, MSI provides precision-engineered parts and high-quality components for diverse mechanical power transmission needs.

Mundelein, IL

Based in Mundelein, IL, MacLean-Fogg Component Solutions manufactures custom, cold-formed, and precision-machined components for powertrain and drivetrain applications. They produce fasteners, high-temperature bolts, and spindle nuts, serving automotive, heavy-duty truck, and various industrial sectors with in-house capabilities.

Louisville, CO

Based in Louisville, CO, Mark Williams Enterprises manufactures high-quality, Made in USA chromoly, aluminum, and carbon fiber drivetrain components. They produce driveshafts, axles, pinion yokes, transmission slip yokes, third members, and differentials, primarily serving the drag racing and performance automotive sectors.

Warren, MI

Based in Warren, MI, Marland Clutch specializes in manufacturing robust backstopping and overrunning clutch solutions. They engineer high-performance clutches designed for demanding heavy-duty industrial applications, ensuring reliable power transmission and control. Their components serve critical machinery across various industrial sectors.

Greenville, SC

Based in Greenville, SC, Master Power Transmission is a US-based manufacturer specializing in rugged gearboxes and a comprehensive line of power transmission products. The company produces components such as Master APG, ComboGear, and XL series, supporting industrial drivetrain applications with world-class manufacturing.

Waterbury, CT

Based in Waterbury, CT, MJK Inc. specializes in supplying precision gearbox assemblies and solutions. The company provides essential drivetrain components and custom solutions for various motor needs, serving industrial clients primarily in California and beyond with high-quality offerings.

Portland, IN

Based in Portland, IN, Moser Engineering specializes in manufacturing high-quality, American-made drivetrain components. The company provides a range of custom-built rear end assemblies, axles, center sections, and differentials for various performance applications, known for their fast custom builds and durable, engineered parts.

Milwaukee, WI

Based in Milwaukee, WI, North American Clutch Corporation (NORAM) manufactures high-quality drivetrain components. Their product lineup includes centrifugal clutches, go-kart clutches, and industrial clutch brakes. They also provide reduction gearboxes, actuators, spindle assemblies, and sensors, serving diverse industrial and recreational applications.

Somerset, NJ

Ogura Industrial Corp. manufactures electromagnetic clutches and brakes for diverse applications, offering torque capabilities from 0.01 oz-in. to 25,000 lb-ft. With extensive standard products and custom design flexibility, the company provides high-quality drivetrain components. Ogura operates manufacturing facilities globally, including North America.

Philadelphia Gear delivers mission-critical gearbox solutions, engineering, and field gear services. Specializing in electro-mechanical drivetrain components, the company provides builds, repair, and propulsion expertise. They serve power generation, water management, marine, and mining operations across the U.S.

Anaheim, CA

Based in Anaheim, CA, PhoenixEV specializes in developing and manufacturing electric drivetrains. The company also produces a range of zero-emission transit buses, shuttle buses, and medium-duty trucks for commercial and government clients across North America, leveraging over 20 years of experience.

Reno, NV

Based in Reno, NV, PowerTrain Industries specializes in providing uncommon and hard-to-find driveline components for the automotive industry. They offer solutions such as CV yokes, center supports, and complete driveshafts, assisting mechanics with specialized repair needs across the USA and beyond.

Clearwater, FL

Based in Clearwater, FL, Precision Shaft Technologies manufactures custom engineered driveshafts for high-performance automotive applications. Their USA-made drivetrain components are designed considering factors like horsepower, RPM, length, and critical speed, serving markets including American muscle, drag, circle track, and custom builds.

Ames, IA

Quick Performance Inc., based in Ames, IA, manufactures and supplies high-quality automotive drivetrain components. The company offers complete rear end packages for GM, Ford, and Chrysler vehicles, assembled center sections, custom axles, gears, posi units, differential bearings, brake kits, and U-joints.

RAM Clutches is a US-based manufacturer specializing in high-performance drivetrain components. Since 1971, the company has produced and manufactured a range of products including clutch kits, flywheels, hydraulic systems, and race clutch systems for various applications.

Corona, CA

Based in Corona, CA, Rubicon Gear, Inc. specializes in high-precision contract manufacturing for power-transmission and motion-control components. They offer turnkey or complete-to-print custom gear manufacturing, assembly, and inventory management solutions. Additionally, their service division provides precision gear and spline manufacturing on customer-furnished components.

Based in Littleton, MA, SITI Power Transmission USA, Inc. manufactures gearboxes, geared motors, and electro-mechanical drive technologies. They produce worm, planetary, helical, and bevel-helical gearboxes, along with mechanical variable speed drive units. The company serves diverse sectors including automotive, packaging, and material handling.

Poland, OH

Solid Axle Industries manufactures quality drivetrain components for the offroad industry. They produce forged steel wheel hubs, SpynTec conversion kits for trucks, and various differential covers for different vehicles. The company also offers complete axle assemblies.

Mishawaka, IN

South Bend Clutch is a leading US manufacturer specializing in high-performance clutch systems, flywheels, and hydraulic components for diesel trucks. Based in Mishawaka, IN, they engineer and produce premium single and dual disc clutch kits for popular brands like Cummins, Power Stroke, and Duramax, serving the aftermarket and performance segments.

Maysville, KY

Based in Maysville, KY, STOBER manufactures industrial gearboxes, specializing in robust and maintenance-free right-angle servo gearboxes. These powerful, flexible, and space-saving components are designed for a wide range of applications, ensuring maximum reliability within industrial drivetrain systems.

Brownstown, MI

Based in Brownstown, MI, Systrand is a Tier 1 supplier with over 40 years of experience in high-precision, high-volume manufacturing. They specialize in precision machining and gear manufacturing, providing components for drivetrain systems. Systrand ensures tight tolerances, low NVH levels, and holds ISO/IATF 16949 certification.

Kent, WA

Based in Kent, WA, Transmission Remanufacturing Company, LLC specializes in wholesale remanufactured automatic and standard transmissions, transfer cases, and torque converters. They serve domestic and foreign cars, trucks, and vans, including heavy-duty, electric, and hybrid applications, utilizing a refined remanufacturing process and dyno testing.

Novi, MI

TREMEC designs and manufactures advanced propulsion systems for conventional and electric vehicles. The company specializes in high-performance Electric Drive Units (EDUs) for battery-electric vehicles, offering high power density and torque-vectoring capabilities, all controlled by TREMEC’s proprietary software.

Chesapeake, VA

Sumitomo Drive Technologies, based in Chesapeake, VA, specializes in manufacturing large industrial gearboxes and speed reducers. The company offers a standard line of catalogued drivetrain components that are easily accessorized and customizable for various demanding applications.

Spirit Lake, IA

Based in Spirit Lake, IA, US Powertrain is a professional automotive drivetrain and powertrain manufacturer and remanufacturer. The company assembles premium quality products, improving upon original OEM designs. Its offerings include remanufactured transfer case assemblies, axle assemblies, differential components, and related parts.

UTX specializes in the remanufacturing of Allison Transmissions, providing rebuilt drivetrain components. The company handles a wide range of Allison series, including 4000, 3000, 1000/2000, and AT models. Located in California, UTX serves industrial and commercial applications with their remanufactured transmissions.

Wichita Falls, TX

Wichita Clutch designs and manufactures heavy-duty clutches and brakes, serving industrial sectors since 1949. These robust components are essential for power transmission and motion control in various demanding drivetrain applications. The company provides specialized solutions for commercial customers.

Alameda, CA

Based in Alameda, CA, Wrightspeed provides the RePower Platform, an electric powertrain solution for converting existing diesel, class 6 & 7 trucks and buses. This technology electrifies fleets, enhancing efficiency and safety by integrating advanced electric drivetrain components for cleaner transportation.

Detroit, MI

Based in Detroit, MI, American Axle & Manufacturing is a Tier 1 automotive and mobility supplier. The company designs, engineers, and manufactures driveline and metal forming technologies. They provide drivetrain components to support the automotive industry.

Indianapolis, IN

Allison Transmission manufactures automatic transmissions and hybrid propulsion solutions for commercial vehicles globally. The company also provides off-highway drive and motion systems, securing contracts for propulsion systems, including those for the Abrams Tank. It serves defense, mining, and other industrial sectors.

Based in Wrentham, MA, Atlantic Sintered manufactures high-density powdered metal gears, sprockets, and complex structural components. The company specializes in precision powertrain components, including hydraulic and electrical power steering parts, for global automotive and industrial systems. They utilize advanced engineering and proprietary processes for demanding applications.

Garden Grove, CA

Harbinger Motors designs and manufactures specialized powertrains for heavy-duty commercial trucking. Based in Garden Grove, CA, the company focuses on electric fleet electrification, offering advanced drivetrain solutions engineered to exceed industry standards with extended service life.

Crawfordsville, IN

Raybestos Powertrain manufactures premium American-made automatic transmission parts, including friction clutch plates. Specializing in both original equipment (OE) and aftermarket components, the company emphasizes meeting OEM standards for quality and performance across its product range.

Livonia, MI

Based in Livonia, MI, Sigma Powertrain, Inc. develops and manufactures state-of-the-art electric transmissions and powertrain technology. Specializing in modular EMAX electric transmissions and patented all-electric clutches, the company provides complete drivetrain solutions for commercial duty and recreational trucks.

Tom Wood's Custom Drive Shafts specializes in the custom fabrication of high-quality off-road driveshafts. The company manufactures durable drivetrain components for a wide range of vehicles, including Jeeps, trucks, 4x4s, and custom buggies. They offer custom solutions and aftermarket parts.

South El Monte, CA

Based in South El Monte, CA, Action Clutch is a manufacturer of high-performance clutches and flywheels. Established in 1962, the company specializes in single, multi-disc, and twin disc race kits, serving the automotive performance industry.

Bakersfield, CA

Based in Bakersfield, CA, Performance Driveline specializes in drivetrain components, focusing on building and shipping custom orders. The company provides essential parts for various driveline needs, serving customers through its online store with a commitment to timely service.

Louisville, KY

Based in Louisville, KY, AXN Heavy Duty manufactures drivetrain components and suspension systems for the heavy-duty trailer and truck market. The company produces axles, suspensions, and a range of aftermarket products, serving industrial and commercial clients.

Carmichael, CA

Based in Carmichael, CA, Califabrication specializes in custom off-road fabrication, offering differential services, drivetrain accessories, and chassis work. They provide custom stainless/aluminum fabrication and CNC plasma cutting for various Toyota, Jeep, Ford, Chevy, Dodge, and Lexus trucks and SUVs.

Moreno Valley, CA

Based in Moreno Valley, CA, California Rebuilt Exchange specializes in rebuilding and remanufacturing OEM automotive parts. The company offers reliable solutions, comprehensive testing for rack and pinion assemblies, and expert services for sourcing and crafting rare components to ensure optimal vehicle performance.

Kenmore, NY

Based in Kenmore, NY, Denny's Driveshafts manufactures and supplies high-performance steel and aluminum driveshafts. The company also offers a comprehensive range of driveline parts, including axles, yokes, universal joints, and CV components. They cater to high-performance street rods, race cars, vans, and pickups.

Simpsonville, SC

Based in Simpsonville, SC, Dodge Industrial, Inc. manufactures mechanical power transmission products and industrial components. They specialize in mounted bearings, enclosed gearing, and various couplings, such as the StratoLink disc coupling. Dodge offers engineering guidance and solutions for industrial facilities.

Valencia, CA

Based in Valencia, CA, Driveshafts A-Z specializes in manufacturing and repairing all types of driveshafts directly at its facility. Services include preventative maintenance, major repairs, balancing, and custom fabrication for diverse vehicles. The company provides professional and reliable drivetrain solutions.

Meridian, ID

Based in Meridian, ID, Dutchman Motorsports specializes in designing and manufacturing custom rear ends, alloy axle shafts, and a wide range of related driveline components. Their product line includes replacement and custom axles, third members, differential components, brake kits, and axle hardware, serving automotive and performance markets.

Exedy USA manufactures a wide range of drivetrain components, including high-quality performance and OEM clutch kits and flywheels. The company offers various vehicle parts for numerous makes and models, specializing in components designed for optimal torque capacity and durability.

Gearbox Group specializes in supplying critical drivetrain components, including gearboxes, for various industrial and automotive applications. They partner with foremost aftermarket distributors, automotive OEMs, Tier 1 auto and industrial suppliers, and heavy-duty transmission manufacturers, supporting diverse industry needs.

Tonawanda, NY

Gear Motions manufactures custom cut and ground precision gears and various drivetrain components for OEMs. Specializing in helical, spur, pump, bevel, and worm gears, they also produce sprockets, timing pulleys, shafts, and splines. All products are proudly made in the USA for diverse applications.

Canton, OH

Based in Canton, OH, Hendrickson manufactures mechanical, elastomeric, and air suspensions for medium and heavy-duty vehicles. The company also produces integrated axle and brake systems, tire pressure control systems, and various springs and stabilizers, serving the global commercial transportation industry.

Mount Laurel, NJ

Based in Mount Laurel, NJ, Holman Powertrain specializes in providing new and remanufactured engines, transmissions, and various related drivetrain components. As a division of Holman, a global automotive services organization, it serves major manufacturers including Ford and General Motors.

Ontario, CA

Based in Ontario, CA, Inland Empire Driveline Service, Inc. manufactures custom driveshafts from steel, aluminum, and composite materials. They also provide center support bearings, yokes, and universal joints. The company offers SFI certified driveshafts for racing and stock replacements for various classic and late model vehicles.

Syracuse, NY

Houston Gear USA, Inc., based in Syracuse, NY, is a provider of industrial gears. The company specializes in delivering high-quality gear solutions, serving a diverse range of industries with essential drivetrain components and advanced manufacturing capabilities.

Santa Fe Springs, CA

Based in Santa Fe Springs, CA, Industrial Sprockets & Gears, Inc. manufactures custom gears, sprockets, and shafts for mechanical power transmission. They offer precision CNC machining, gear grinding, heat treating, and gear box repair. The company serves industrial clients in mining, petroleum, machine tool, oil and gas, and farm equipment sectors.

Fullerton, CA

Based in Fullerton, CA, Inglewood Transmission specializes in rebuilding and customizing Allison, Dodge/RAM, Ford, and GM transmissions. They combine premium aftermarket components with proprietary parts to deliver durable, high-strength units for heavy-duty towing and performance applications, powering trucks nationwide since 1964.

Southland Clutch operates a specialized facility dedicated to drivetrain components, primarily focusing on clutches. The company provides expert services for clutch assemblies, serving customers across North America with a commitment to quality and service.

Carson, CA

Stealth EV, owned and operated by Hypercraft, specializes in advanced EV powertrain manufacturing. Based in Carson, CA, the company pioneers innovative solutions for electric vehicle drivetrains. They focus on producing critical components for the rapidly evolving automotive industry, supporting high-performance electric vehicle development.

U.S. Axle, Inc., based in Pottstown, PA, custom manufactures heavy equipment axles, shafts, and cylinders for OEMs. Utilizing integrated processes such as machining and induction hardening, they serve agriculture, construction, heavy trucks, rail, and downhole drilling markets with purpose-built drivetrain solutions.

Mckinney, TX

Based in McKinney, TX, Watson & Chalin Mfg Inc. manufactures and supplies axles, lift axles, and truck and trailer suspension systems. The company specializes in components for the commercial vehicle industry, providing critical parts for trucks and trailers.

Ampere EV develops and manufactures complete electric powertrains for vehicles. Their turnkey Atom Drive System, built in-house and pre-configured, provides OEM-level solutions for EV builders. Engineered, tested, and assembled in Georgia, USA, these systems offer a hassle-free EV vehicle build experience.

Auburn Gear manufactures high-performance, American-made drivetrain components, specializing in differentials for a wide range of vehicles. With over 50 years of experience, they produce specialty models designed for diverse applications, including everyday driving, performance racing, heavy hauling, and challenging off-road conditions.

Columbus, IN

Cummins, based in Columbus, IN, designs and manufactures a comprehensive range of drivetrain systems. The company provides essential components such as axles, brakes, suspensions, drivelines, and aftermarket parts. Specializing in the commercial vehicle sector, Cummins delivers robust solutions for vehicle propulsion and control.

Richton Park, IL

ITW Automotive engineers and manufactures highly engineered fastening, assembly, and component solutions for the automotive industry. They specialize in custom powertrain and drivetrain components, leveraging 100 years of experience to meet customer needs. With world-class manufacturing capabilities, ITW Automotive delivers tailored solutions globally.

Anaheim, CA

Chrisman Driveline Components manufactures high-performance driveline components. Based in Anaheim, CA, the company specializes in producing parts for demanding automotive applications, focusing on quality and robust engineering for the racing and performance industry.

Fort Mill, SC

Schaeffler Group USA Inc. manufactures high-precision components and systems for automotive and industrial applications. Specializing in advanced drivetrain technologies, the company produces a wide range of products including bearings, clutches, and transmission components, supporting gearbox manufacturers with targeted research and development.

ZF is a global technology company providing advanced mobility products and systems for passenger cars, commercial vehicles, and industrial applications. They specialize in drivetrain components, including transmissions, axles, and steering systems, with a significant manufacturing presence across the United States.

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How to Choose a Company

  • Verify their metrology capabilities specifically for gear profiles (e.g., CMM with gear inspection software, involute checkers) to ensure precise tooth engagement and minimal backlash, not just generic dimensional accuracy.
  • Assess their in-house heat treatment and metallurgical expertise; inadequate case hardening or through-hardening for high-stress components like ring gears or drive shafts can lead to premature failure and liability issues.
  • For automotive or heavy equipment applications, demand IATF 16949 certification. For functional safety critical parts, look for adherence to ISO 26262 principles in their quality management system, far beyond a basic ISO 9001.
  • Request proof of their experience with the specific material you're using (e.g., 4340 alloy steel, Maraging steel, specialty bronzes) and their internal material testing protocols, including NDT (Non-Destructive Testing) for internal defects.
  • Beware of suppliers who don't push back on your design during the DFM (Design for Manufacturability) phase for complex parts like hypoid gears or planet carriers. An experienced partner will offer suggestions for optimizing processes like gear shaping or grinding for cost, quality, and lead time.
  • Evaluate their ability to manage NVH (Noise, Vibration, and Harshness) requirements. This involves not just tight tolerances but also specialized finishing processes like superfinishing and the ability to perform pre-assembly NVH testing or dynamic balancing.

Frequently Asked Questions

What's the difference between a general machinist and a specialized drivetrain component manufacturer?

A general machinist can cut metal to print, but a specialized drivetrain manufacturer possesses unique expertise in processes like gear hobbing, gear shaping, grinding of involute profiles, and specialized heat treatments (e.g., carburizing, nitriding) critical for the longevity and performance of components like splined shafts, planetary gears, and differential cases. They also have dedicated metrology equipment for inspecting gear geometry (e.g., involute checkers, lead testers) that general machine shops typically lack.

When should I prioritize a drivetrain manufacturer with IATF 16949 certification over just ISO 9001?

For any drivetrain component destined for the automotive industry (OEMs or Tier 1/2 suppliers), IATF 16949 is almost always a mandatory requirement. It builds upon ISO 9001 but adds specific requirements for automotive production, focusing on defect prevention, reduction of variation and waste in the supply chain, and critical product safety elements. If your components are for non-automotive sectors (e.g., industrial, aerospace, marine), ISO 9001 might suffice, but IATF 16949 indicates a higher level of process maturity.

How important is a manufacturer's in-house heat treatment for critical drivetrain components?

In-house heat treatment is extremely important for critical drivetrain components like gears, shafts, and splines. It allows for tight control over the entire process, from quenching medium consistency to furnace calibration and cycle times, which directly impacts case depth, core hardness, and distortion. Outsourcing heat treatment can introduce additional lead times, transportation damage risks, and make root cause analysis for metallurgical issues much more complex if failures occur.

What kind of information and documentation do I need to provide for an accurate quote on custom drivetrain components?

Beyond complete 2D and 3D CAD files (e.g., STEP, IGES), you'll need to provide full material specifications (including specific alloy, heat treatment requirements, and hardness ranges), critical tolerances, surface finish callouts, and any applicable industry standards (e.g., AGMA quality classes for gears). Expected annual volumes, target price, and lead time expectations are also crucial for the manufacturer to provide an accurate and competitive quote.

How do I evaluate a drivetrain manufacturer's ability to manage NVH (Noise, Vibration, and Harshness) in my design?

To evaluate NVH capabilities, look for manufacturers who understand the impact of gear geometry (e.g., helix angle, contact ratio, profile modification), surface finish, and balancing on sound and vibration. Ask about their ability to perform gear rolling tests, single-flank composite testing, and dynamic balancing for rotating assemblies. Some advanced suppliers even offer anechoic chamber testing or modal analysis for gearbox assemblies to validate NVH targets before final integration.

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