This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.
S&S 4″ Stroke Flywheel For Harley Twin Cam
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. Available with tapered connecting rods for stock style pistons or with full width connecting rods for S&S performance pistons. Three piece design with integral main shafts made from 4140 steel.
Features:

4″ stroke

Heavy duty connecting rods

Pinion and sprocket shafts are forged as part of the flywheel

CNC machined from heat-treated, closed die, steel forgings, which are 114% stronger than late style stock steel flywheels

Dynamically balanced

Trued to less than .0005″ runout on pinion and sprocket shaft bearing surfaces

Capable of higher rpm

Fully compatible with gear drive cams

Made in the USA