MCS-531792 - Used to convert a stock 883cc or 1100cc Sportster to 1200cc. Gives 1:9.5 CR with stock heads. Requires boring of stock cylinders to the stock 3-1/2" 1200 bore only (see note). Other modifications are not required. Works with stock 883 cylinder heads and c

Fitment:
86-21 XL883/1100