S&S 4-3/8" Stroke Flywheel, Tapered Rods+ Balancer Gear HD M8 Models

The flywheels are 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, the new cranks for the Milwaukee-Eight® platform are the best of the best to build your high performance engine around.
FEATURES & BENEFITS
4-3/8" Stroke (107 or 124ci)
Balance Gear installed
Heat Treated 4140 Material is harder & more than twice as strong as stock
Stronger assembly eliminates need to weld crankpin
Capable of higher RPM - More available power!
S&S High Strength Connecting Rods are designed with Finite Element Analysis to eliminate weak spots and handle more power!
Tapered wristpin connecting rods compatible with stock pistons
Balanced for stock piston weight (1060g)
Perfect for Gear Drive Cams
Consistent balance & precision machining
Capable of higher RPM – More available power!