Dominant Drivetrain Products
GrudgeBox Builder's Kit
$ 3,395.00
Built to take high horsepower abuse found in late model H-D performance applications while providing elegant shift precision. Transmission Configurations GrudgeBox - Straight 1st, 2nd 3rd, 4th, 5th and 6th...
F6R: Factory 6-Speed Reverse
$ 2,195.00
Designed, manufactured, tested, proven and beloved - the industry's leading reverse drive for Harley-Davidson is the easiest to use and most worry-free system. Our non-invasive reverse gear system was designed...
Armored Attitude Adjuster
$ 49.99
Stronger than the original for those with more abusive inclinations! Prevent damage to your motorcycles left side motor case bearings, inner primary bearings, clutch hub bearings and transmission output gear...
6-into-4 Complete Transmission
$ 3,795.00
Made to satisfy the old school tendencies while providing the ability to run reasonable RPM’s at highway speeds. Panhead and Shovelhead riders will love the ability to ride hard with...
Factory 6-Speed Tapered Roller Bearing Kit
$ 599.00
Heal your Achilles heel with the BAKER Main Drive Gear Bearing Kit for 2007-up Big Twins! P/N 640-67 Kit includes BAKER double tapered roller bearing assembly Replacement HD main...