Durable Big Bore upgrade with premium aluminum cylinders and cast-in iron liners. Kit includes pistons, rings and gaskets. Made in the USA. Requires skilled installation.
Subcategories
Active filters
Cylinders with a stock bolt pattern, bored slightly under nominal size and left un-honed; designed for 124" hot set up kits and '99-'17 Twin Cams. Requires crankcase machining.
Complete big-bore cylinder and piston kit with forged pistons, gaskets, and hardware; ideal for stroker engine builds. Made in the U.S.A.
Direct-fit big bore kit for improved displacement and performance. Includes cylinders, pistons, rings and gaskets. Professional installation required.
Seamless 4130 chromoly T-Bar with mandrel bends and precision TIG-welded joints for durable, classic styling.
Complete 96" big bore kit includes cylinders, pistons, rings and gaskets; made in the U.S.A.; requires crankcase boring and a skilled technician for installation.
Tracker-style handlebar with TBW-compatible bar-end plug, mandrel-bent chromoly tubing and milled slots for clean internal routing.
TBW-compatible handlebar with a removable plug for single- and dual-cable throttles.
Milled slots for clean internal wire routing; precision mandrel-bent and TIG welded construction.
CNC-machined 6061-T6 construction; replaces rubber bushings for a more rigid interface; fits most stock and select aftermarket Harley-Davidson upper trees.