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Purchasing Information:
After you place your order on this site, we will contact you to confirm your order details prior to payment being made. All orders will be processed and fulfilled by one of our authorised dealers. Rollies Speed Shop Distribution is a wholesale business and does not sell directly to the general public. For more info see the Purchasing Information page.
Features & Benefits:-
* Heat-treated 4140 material is harder & 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 & less vibration.
* Reduced mainshaft deflecti on 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
Tech Tips:-
* 2003-2006 motors can be upgraded to the stronger in.Timkenin. crankcase bearing. Part # SS320-0397
Proudly Made in the USA by S&S Cycle !
MFR PART No: 320-0396
ROLLIES PART No: SS320-0396
Give us a call us on
(07) 3252 5381 and one of our
parts specialist’s will help
you get the parts you need.Â
