Big bore cylinder kit for 883-1200 conversion on Sportster models.
Increase your horsepower with our 883cc to 1200cc big bore conversion kit. Our kit includes 2 silver finished cylinders with milled edge fin. Cylinders are pre-fitted with Wiseco 10:1 piston and ring set. Kit will fit 1986-2003 XL's. Order head & base gasket separately.