Wiseco K1660

- Fits: All Harley-Davidson 1200 Evo Sportster engines 1100 Evo Sportster engines all Evo Sportster engines and Buell models with stock 1200 heads - 73 cubic inch (1200 cubic capacity) kit includes 9:1 compression ratio flat top pistons, rings, circlips, chrome piston pins - Each Wiseco piston is designed with the proper installed clearance to produce the most power, least wear, and best seal at running temperature, for each application - Dedicated forgings are used for superior strength to weight ratio utilizing aerospace alloy with a dome designed for improved flame travel and detailed skirt shape and profiles for stability and smooth operation in the cylinder bore