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

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

Vehicle Fitment:

2006 Harley Davidson FLST Heritage Softail
2000-2006 Harley Davidson FLSTC Heritage Softail Classic
2001-2006 Harley Davidson FLSTCI Heritage Softail Classic
2000-2006 Harley Davidson FLSTF Fat Boy
2001-2006 Harley Davidson FLSTFI Fat Boy
2006 Harley Davidson FLSTI Heritage Softail
2005-2006 Harley Davidson FLSTN Softail Deluxe
2005-2006 Harley Davidson FLSTNI Softail Deluxe
2000-2003 Harley Davidson FLSTS Heritage Springer
2005-2006 Harley Davidson FLSTSC Softail Springer Classic
2005-2006 Harley Davidson FLSTSCI Softail Springer Classic
2001-2003 Harley Davidson FLSTSI Heritage Springer
2000-2006 Harley Davidson FXST Softail Standard
2000-2006 Harley Davidson FXSTB Night Train
2001-2006 Harley Davidson FXSTBI Night Train
2000-2006 Harley Davidson FXSTD Softail Deuce
2001-2006 Harley Davidson FXSTDI Softail Deuce
2001-2006 Harley Davidson FXSTI Softail Standard
2000-2006 Harley Davidson FXSTS Springer Softail
2001-2006 Harley Davidson FXSTSI Springer Softail