S&S Cycle 320-0355 3-Piece Flywheel - 4-3/8in. helmets-modular-helmets Scorpion power-stretch panels in the

Scorpion power-stretch panels in the sleeves and underarm increase flexibility and comfort

79cc heads accept OEM rocker boxes

Engineered IRCOOLTECH treatment for optimized body temperature control

Compatible with the Alpinestars Tech Air air bag system

with exceptional friction control

S&S Cycle 320-0355 3-Piece Flywheel - 4-3/8in. helmets-modular-helmets Scorpion power-stretch panels in theVast 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 rod length is 7. 659in..