4-3/8in. Stroke Flywheel Assembly. Fits Twin Cam Softail 2007-2017.

Features & Benefits:-

* Includes new Sprocket Shaft Race for OEM type Main Bearing.

* Replaces the Stock Crankshaft in 96ci,103ci & 110ci Engines.

* OEM style Tapered Wristpin Ends allow use of OEM Pistons.

* 7.659" length Connecting Rods.

* Heat-treated 4140 material is harder & stronger than stock.

* Harder material eliminates the need for Thrust Washers.

* Larger diameter Crankpin provides increased Crank-Pin clamping force.

* Integral Mainshafts, Eliminates two potential weak points.

* Consistent balance & precision machining.

* Truer Flywheels & Less Vibration.

* Reduced Mainshaft deflection at high rpm means Less Vibration, reduced piston & rod side thrusting &events oil pump damage.

* Fully compatible with Gear Drive Cams.

* Capable of higher rpm giving More available power.

* Trued to within .0005" Run-Out.

* Rod Bearings have 20 Rollers vs 18 Stock.

Proudly Made in the USA by S&S Cycle !

* Replaces OEM # 23912-07 & 24100022