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S&S Cycle 320-0396 3-Piece Flywheel - 4in. Stroke

Demon’s Part # 90000028333 Mfg. Part # 320-0396

$1,711.95

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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 rod length is 7.659in. Stock pistons in 2007 and later engines require rods with tapered wristpin ends. 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 rod length is 7.659in. Stock pistons in 2007 and later engines require rods with tapered wristpin ends. With sprocket bearing race.