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131ci, 4-5/8in. Stroker Flywheel Assembly. Fits 107/114/117ci Milwaukee-Eight 2017up when using S&S 131ci Big Bore Cylinders.


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.

Fitment info for 4-5/8in. Stroke with FULL width Wristpin:

1. Takes 107/114/117ci to 131ci when using S&S 131ci cylinder kits SS910-0762/0763/0764

* FULL Wrist in for S&S pistons are only compatible with S&S pistons taking the displacement to 131ci!

Features & Benefits:-

* Heat Treated 4140 Material is harder & 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)

Proudly Made in the USA by S&S Cycle !

Tech Tips:-

* The balancer gear CAN be removed!

* The FULL width wrist pin is ONLY compatible with S&S pistons!

Suggest Additional Purchase:

Main Bearing x 2 SS310-0593