With no need to rebalance flywheels, bore crankcases, or bore cylinders, this kit is about as easy as it gets. Consisting of the largest bore we feel can safely be used in a cylinder with a stock spigot diameter, this kit brings a new definition to the term 'big bore'. Forged coated pistons are compatible with stock or S&S Super Stock® 89cc heads Kit includes pistons, top end gasket kit, and S&S cylinders for 1999 - '06 Harley-Davidson® big twins. Wrinkle black finish.
