S&S CYCLE Stroker Kit - 4-1/2" - Twin Cam 320-0459

Feature three-piece assembled flywheels with shafts Do not require any motor case modification 4-1/2" stroke 103" stock motors or motors with factory 95" kits require piston kit only; stock or S&S cylinder heads can be used Stock cylinders will require boring to 3.875" Made in the U.S.A. Fuel-injected motors will require recalibration of the fuel-injection system. This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.