- fits Evolution Big Twin 1990-1997, Sportster 1991→ (exc. XR1200)
- with 8 friction discs
- replaces OEM 37911-90
Aramid or Carbon Fiber Discs?Aramid (also in the market under the brand name Kevlar) lined friction discs are a quality replacement for stock clutch discs. For high performance applications carbon fiber lined friction discs arerecommended, which provide high thermal stability, improved wear resistance and nonabrasiveness.
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