S&S Cycle 320-0396 3-Piece Flywheel - 4in. Stroke helmets-offroad-helmets External and internal design and

External and internal design and materials densities are optimized for maximum protection from linear and oblique acceleration impacts

replaceable screw-mounted slider insert

2008-2017 Yamaha XV19C Raider

Designed and developed for Professional MotoGP athletes where going faster and being protected is the goal

S&S Cycle 320-0396 3-Piece Flywheel - 4in. Stroke helmets-offroad-helmets External and internal design andWith sprocket bearing race Vast improvement over stock flywheels which shift out of true under heavy load. Heat treated 4140 material is 114% stronger than stock, eliminates thrust washer. Larger 1. 671in. crankpin, increased cross sectional area for increased crank pin clamping force. No welding required. Integral mainshafts, truer flywheels and less vibration. Notes: Strokes longer than stock will require S&S piston oiler set #31 2026. 07 up stock