S&S Cycle 320-0475 3-Piece Flywheel for 124ci. S&S Twin Cam - 4-5/8in. Stroke protection 2017 Arctic Cat Alterra 500

2017 Arctic Cat Alterra 500

1994-1999 Harley Davidson FXDS-Conv Dyna Convertible

Billet aluminum tappet cuffs have a hard-anodized black coating and are stronger than stock to eliminate distortion

Heads are fully assembled with springs and valves

Zipper closures at wrists

S&S Cycle 320-0475 3-Piece Flywheel for 124ci. S&S Twin Cam - 4-5/8in. Stroke protection 2017 Arctic Cat Alterra 500Without 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