S&S Cycle 320-0459 3-Piece Flywheel - 4 1/2in. Stroke engine-power-up-kits Pistons come with rings

Pistons come with rings

2004-2008 Arctic Cat DVX 400

All kits include necessary gaskets

(99-06) or 110in

1978 Suzuki RM400

S&S Cycle 320-0459 3-Piece Flywheel - 4 1/2in. Stroke engine-power-up-kits Pistons come with ringsWithout Sproket 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