S&S CYCLE Cylinder - 3.500" - Natural Finish - Evolution Big Twin 91-7210

Cylinder - 3.500" - Natural Finish - Evolution Big Twin
3.500" bore cylinders are for 80" or 89" big twins with stock, S&S® Performance, or Super Stock® heads, Thicker castings, larger cooling fins, and better wear resistance than stock cylinder, Bored slightly under normal size and are not honed, Stock replacement with cast iron liner, Includes dowel pins, Made in the USA, Super Stock® pistons for 80" engines can be used with stock 80" flywheels without rebalancing.