- Chassis Engineering
 - Manufacturer of drag racing suspensions and components. - Tootees Race Cars
- Design and manufacture of drag chassis and cars.
- Downs Engineering
- Custom race car manufacturer.
- Roush Performance
- Maker of high performance cars, including the Roush Mustang and other speciality vehicles.
- MoTec Systems
- Using computer controlled engine management to control the engine dynamics of race cars.
- Mark Williams Enterprises
- Manufacturer and provider of drag racing components including drive line chassis components, axles, drive shafts, and more.
- McKinney Corp.
- Fuel and funny car specialists.
- Performance Bodies
- Manufacturer of aluminium and steel stock car bodies.
 Radical Sportscars
- British manufacturer of racing cars including the Clubsport, Prosport, SR3 Supersport, and SR4 Clubsport.- Stealth Motorsports
- Manufactures open-wheel race car chassis.
- Halfscale Dragsters
- Builder of halfscale and jr dragsters.
- RAETECH, Inc.
- Supporting the automotive industry with engineering consulting services, product design, process development prototyping and limited production needs.
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