Drivetrain parts carry the engine's power to the wheels: clutches, transmissions, torque converters, driveshafts and axles. This page starts with racing clutches, including centrifugal slipper clutches for drag racing, truck and tractor pulling and sand drags, with pressure plates machined from billet aluminum in San Diego.
More American drivetrain makers will be added as they are verified. Engine parts are on the engine internal and engine external pages.
More types in this section ↓
Crower makes racing clutches: the fully centrifugal, adjustable Crowerglide slipper clutch for truck and tractor pulling, drag racing, sand drags, monster trucks and mud racing, and centrifugal-assist pedal clutches for alcohol dragsters, funny cars, Pro Mod and Comp Eliminator. Pressure plates are machined from billet 7075-T6 aluminum, and Crower services and repairs its own clutches.
Made in: San Diego, CA (parts machined in-house on CNC equipment). The company says it keeps its production in the USA.
Source: Crower clutches and PRI, Dec 2025, checked 10/2026
San Diego, CA
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A company may be based in the USA while making some products elsewhere. Check the manufacturer's own site for where a specific product is made.
