Collection: Viper Assembled Clutches

Assembled Viper clutches are complete centrifugal units (typically 6-spring, 1-disc or 2-disc) with a 3/4 inch crankshaft bore, sold without a driver so they can be fitted to matching sprockets or hubs. Centrifugal shoes or pads move outward as engine speed rises, so the clutch engages automatically without a pedal; extra discs increase friction area and heat capacity for higher-load kart drive-lines.