106ci Stroker Flywheel Assembly – 4-1/2in. Stroke. Fits Twin Cam Dyna 1999-2005 & Touring 1999-2006.

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Note: This S&S 4-1/2in. stroke flywheel assembly when used with 3-7/8in. cylinders creats 106 cubic inch’s1. Purchase S&S 3-7/8in. piston kit # SS92-1210 & bore your current cylindersFeatures & Benefits:-* 2003-2006 motors must be upgraded to the stronger Timken Crankcase Bearing & Sleeve # SS31-4013 & JM-956* Heat-treated 4140 material is harder and 114% stronger than stock.* Harder material, eliminates thrust washer.* Larger 1.671in. diam eter 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 & precision machining – Truer flywheels & less vibration.* Reduced mainshaft deflection at high rpm – less vibration, reduced piston & rod side thrusting, prevents oil pump damage, fully compatible with gear drive cams.* Capable of higher rpm – More avai lable power!* Trued to with in .0005in. TIR * Rod Bearings have 20 rollers vs 18 stockProudly Made in the USA by S&S Cycle !Additional Parts Required:-* SS92-1210 – S&S 3-7/8in. Piston Kit* CG-C9892 – Gasket KitTech Tips:-* Piston jets (SS31-2026) included* Compression ratio w/OEM heads = 10.1:1* Compression ratio w/S&S 89cc heads = 9.8:1
MFR PART No: 320-0460

ROLLIES PART No: SS320-0460