4-3/8in. Stroke Flywheel Assembly with Timken Bearing Upgrade. Fits Twin Cam Dyna 2007-2017 & Touring 2007-2016.

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Features & Benefits:-* Without Sprocket Shaft Race for use with the Timken Bearing Upgrade.* Replaces the Stock Crankshaft in 96ci,103ci & 110ci Engines.* OEM style Tapered Wristpin Ends allow use of OEM Pistons.* 7.659in. 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. * Integr al 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 .0005in. Run-Out.* Rod Bearings have 20 Rollers vs 18 Stock.Proudly Made in the USA by S&S Cycle !
MFR PART No: 320-0353

ROLLIES PART No: SS320-0353






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