900-0568 124" Twin Cam Hot set-up kit with heads. Black

Taking a stock 96 or 103-inch Twin Cam up to a massive 124 inches is a serious undertaking, and this S&S Hot Set-Up kit provides the heavy-duty components to do it right. Fitting 2006–2017 Dynas and 2007–2016 Touring models, excluding Twin-Cooled models, the kit includes stroker flywheels, big bore cylinders in a black wrinkle finish, and 91cc high-flow heads. The 640 Easy Start gear-driven cams ensure that even with a 10.8:1 compression ratio, your bike will fire up easily with the stock starter. Please note that your stock cases will require machining for the 4-1/8 inch cylinders, and you will need to upgrade to a larger throttle body and high-performance ECU to handle the massive increase in airflow.