APM Comp Master Clutch Kit Upgrade your ride with the APM Comp Master Clutch Kit — a high-performance replacement designed to increase friction surface and deliver smooth, reliable engagement for early-model bikes. Enhanced performance: Enlarged friction surface for improved power transfer and reduced slippage under load. Diaphragm spring conversion: Converts early coil-spring clutches to APM’s proprietary diaphragm spring for consistent, predictable feel. Easy installation: Drops into your existing clutch basket with no major modification required. Smooth lever feel: Eliminates the need for heavy-duty clutch springs that produce a hard lever — enjoy lighter, smoother engagement. Made in the USA: Engineered and manufactured domestically to high quality standards. Ideal for riders seeking improved durability, cleaner engagement, and race-ready performance without sacrificing daily usability. APM Comp Master Clutch Kit is the direct, dependable upgrade for early-model applications.