S&S 4in. Stroke Flywheel Assembly. Fits Twin Cam Dyna & Touring 1999-2002.

Description

Features & Benefits:-

* Also Fits Dyna 1999-2005.

* Also Fits Touring 1999-2006.

* 2003-2006 motors can be upgraded to the stronger Timken Crankcase Bearing.

* Heat-treated 4140 material is harder and 114% stronger than stock.

* Harder material, eliminates thrust washer.

* Larger 1.671in. diameter crankpin.

* Designed with increased cross-sectional area for increased crank-pin clamping force – No welding required.

* Integral mainshafts – Eliminates