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S&S Cycle 3-Piece Flywheel – 4in. Stroke 320-0402

$148.00 $1,744.99

Vast improvement over stock flywheels which shift out of true under heavy loadHeat treated 4140 material is 114% stronger than stock, eliminates thrust washerLarger 1.671in. crankpin, increased cross-sectional area for increased crank-pin clamping force.No

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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.

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