With sprocket bearing

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.

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