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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.
The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.
* 4-1/2in. Stroke (Stock in 114ci & 117ci engines)
* FULL Wristpin for aftermarket pistons (NOT compatible with OEM pistons )
* Heat Treated 4140 Material is ha rder & more than twice as strong as stock
* Stronger assembly eliminates need to weld crankpin
* S&S High Strength Connecting Rods are designed with Finite Element Analysis to eliminate weak spots and handle more power!
* Perfect for Gear Drive Cams
* Consistent balance & precision machining
* Capable of higher RPM – More available power!
* Includes Balancer Gear (can be removed)
* Upgrade on OEM # 24100045A
Proudly Made in the USA by S&S Cycle !
Tech Tips:-
The balancer gear CAN be removed!
Suggest Additional Purchase:
Main Bearing x 2 SS310-0593
MFR PART No: 320-0603
ROLLIES PART No: SS320-0603
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
