S&S 4in. Stroke Flywheel Assembly. Fits Twin Cam Dyna 2003-2005 & Touring 2003-2006.

Description

Features & Benefits:-

* 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 two potential points of weakness

* Consistent balance and precision machining – Truer flywheels and less vibration

* Reduced mainshaft deflecti