Racing Performance
GrudgeBox Builder's Kit
$ 3,695.00
The GrudgeBox is a tough overdrive 6-speed to replace your stock 6-speed! The GrudgeBox was engineered with a focus on excessive torque capacity and crisp shifting. All gears are straight...
OD6: Overdrive 6-Speed Builder's Kit
$ 3,195.00
This is the ORIGINAL 6-speed design that revolutionized the American V-Twin industry. It’s still the best overdrive 6-speed built to this day…hands down. Our OD6 is built to comfortably handle...
OD6: Overdrive 6-Speed Complete Transmission
$ 4,395.00
* Limited supply of chrome bearing doors available. Please give us a call at 517-339-3835 to order a chrome bearing door. This is the ORIGINAL 6-speed design that revolutionized the...
High Torque Bearing Kit
$ 17.99
The 34091-85 inner bearing race has been used on Big Twins since 1985. The inner primary bearing rides on this race. By design, this race press-fits onto the transmission mainshaft. This...
Cruise Drive Smooth Shift Kit
$ 399.00
The design principles that made our Six-Speed Overdrive shift so smooth were applied to create a shift drum kit that will bolt onto any cruise drive 6-speed and give super...
Anti Overshift Ratchet Pawl
$ 249.00
The stock ratchet pawl used from 1980 to 2000 utilized scissor spring that was well known for breaking. The unfortunate side effect of this failure is the broken spring leg...
Fine Tooth Adjustment Kit
$ 159.00
The BAKER primary chain adjuster bracket looks like the stock 39990-01 style bracket but has 28% more adjuster teeth. The finer pitch teeth make it easier to dial in your...
N1 Shift System
$ 349.00
The N1 Shift Drums have a 0-down all-up shifting pattern and eliminate any possibility of catching neutral on aggressive 1-2 shifts. Neutral is below 1st. The N1 drum is also...
Street Door
$ 395.00
The Street Door is manufactured with 6061-T6 aluminum and features 28% wider bearings over stock. The bearings are retained with a 6-bolt steel 1/8″ plate, phantom clutch lever movement is...
Transmission Rebuild Kits
$ 379.00
Features This kit was put together to assist you with that high mileage rebuild. When your transmission has reached its limit of efficiency and smooth shifting, it’s time for that...
Primary Rebuild Kits
$ 119.00
This all-inclusive convenient kit is designed to freshen up those high mileage bikes, prevent leakage, and includes everything you’ll need after opening up your primary. Includes gaskets, seals and O-rings....
Red Line Heavy ShockProof Gear Lube
$ 23.97
Picking the right transmission fluid ensures the life and durability of your transmission, that’s why BAKER recommends a fully synthetic GL-5 rated gear weight oil of 75W-140.The Red Line Heavy...
Spectro Gear Lube
$ 30.43
Picking the right transmission fluid ensures the life and durability of your transmission, that’s why BAKER recommends a fully synthetic GL-5 rated gear weight oil of 75W-140. The Spectro Heavy...
Spectro Primary Oil
$ 13.88
Picking the right primary fluid ensures the life and durability of your primary, that’s why BAKER recommends a 85W primary oil like the Spectro Heavy Duty Primary Oil. This Spectro...
TC88B Softail Oil Line Adapter Kit
$ 35.00
2000-2006 Softail Models Require BAKER PN TCSO-A, Oil Line Adapter Kit Fitment 2000-2006 Softail (Twin Cam) Detail PN: TCSO-A
Pulleys for Sportsters
$ 199.00
In addition to the 4% more torque, our pulleys are lighter and stronger than stock. Less weight translates to reduced ‘flywheel effect’ and quicker revs. Features Stock Sportster/Buell transmission pulleys...
Favorite Links
Shop
Good To Know
Get on the list
Sign up to our mailing list and get the latest on specials, contests, giveaways, new releases and more …
© 2025 BAKER Drivetrain,
Haslett, Michigan 48840 USA | Call Us: 517-339-3835
Buy now, Pay later with Affirm here.
