The Stage II Big Bore Kit provides the parts you need to increase the horsepower of your EFI-equipped model. The 50-state street legal kit increases the displacement of your Twin Cam-equipped model from 96 cubic inches (1584cc) to 103 cubic inches (1690cc). Includes Stage II (SE-255) cams, Big Bore cylinders, Big Bore flat top pistons, clips, and a Stage I Air Cleaner Kit with one-piece back plate, integral breathers, all mounting hardware, and gaskets. Also includes a high performance clutch spring. Separate purchase of cam spacers is required. See manual for proper procedure and cam spacer part numbers. Requires separate purchase of primary cover gasket. Not all components shown. 49-state kits include catalyst mufflers or headers, and California kits are street legal on California pollution controlled vehicles when used with Original Equipment mufflers. All EFI-equipped models require ECM calibration* (priced separately)
Fits 50-state ’10-later Softail® models equipped with a Twin Cam 96™ engine. Also fits ’08-’09 California Softail models.*
