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

$2,949 $2,654.10

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SKU: SS320-0403 Categories: , , ,
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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 – Eliminatestwo 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 available power!

* Trued to with in .0005in. TIR

* Rod Bearings have 20 rollers vs 18 stock

Proudly Made in the USA by S&S Cycle !

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