Description
S&S Cycle 320-0523 S&S® 4-5/8″ Stroke Flywheel Assembly W/O Sprocket Shaft Bearing Race For 2007-’16 Non-Balanced HD® Big Twins and 2006 Dyna Models
- 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 1.671″ 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 7.659″
- Stock pistons in 2007 and later engines require rods with tapered wristpin ends
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