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Drivetrain products for Harley-Davidson®
There's no comparison to BAKER Drivetrain products. Our firm commitment to quality American-made parts—designed and built by the people who ride them—delivers an uncompromising product that lasts.
Improve the performance of your American V-Twin Harley-Davidson®
BAKER Drivetrain was started in 1998 because engines were making more power, but nobody was taking the drivetrain seriously. Choose the right drivetrain, chassis, and rear wheel to put the power to the ground.
All BAKER aftermarket motorcycle parts are designed and manufactured right here in America. BAKER Drivetrain continues to introduce new solutions based on empirically-based inspiration as they ride their American V-Twins and get ideas from their American riding buddies using their proven engineering methodologies.
The components for the Harley-Davidson® drivetrain aftermarket we offer are broken up into 4 catalogs: Cruise Drive era (2007-later), 5-speed era (1984-2006), 4-speed era (1936-86), and Custom/Performance (includes Big Dog and Sportster/Buell).
Armored Attitude Adjuster
$ 299.00
Stronger than the original for those with more abusive inclinations! The BAKER Armored Attitude Adjuster is an insurance policy for your motorcycle in the form of a manual chain tensioner...
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...
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...
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...
Heavy Duty Throwout Bearing Kit
$ 99.00
People have been griping about the 37311-75 throwout bearing since it was introduced into Big Twins in 1975. Failures occur when the clutch cable is inadvertently adjusted with little to no...
6-into-4 Complete Transmission
$ 4,395.00
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...
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...
F6R: Factory 6-Speed Reverse
$ 2,695.00
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...
Countershaft Bearing Service Tool Kit ToolE-07
$ 159.00
This is a service tool kit in order to remove the stock countershaft bearing in 2007-Later Harleys. P/N ToolE-07 Fitment 2006-Later Dyna and 2007-Later Touring & Softail Benefits This...
Factory 6-Speed Tapered Roller Bearing Kit
$ 995.00
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...
Replacement Pawl Shaft Seal
$ 6.99
This is a replacement pawl shaft seal that we found to last the longest. Fitment Size 4.37 x .875 x .25
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...
Replacement Main Drive Gear Bore End Seal
$ 9.99
This is a replacement main drive gear bore end seal. It's great! Fitment Size: 25 x 32 x 06
DD7: Direct Drive 7-Speed Builder's Kit
$ 3,695.00
The DD7 upgrades any existing 2006-later big twin 6 speed to a full 7 speed transmission. The BAKER DD7 is more than just another gear added to the mix for...
Primary Chain Adjuster Shoe
$ 49.00
Replacement Fat Shoe for special applications. Fitment: Please refer to the Sprocket/Chain Matrix in order to figure out fitment. PN DD6-178
Transmission Dipstick
$ 29.00
Have you ever heard of a 5-speed transmission dipstick breaking off and working its way into the gearbox with disastrous results? Ask any seasoned technician; he’s seen one. The low...
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...
Klassic Kicker Gears
$ 399.00
We started making 6-into-4 transmissions with kickers over ten years ago. At the time, we could only purchase some Taiwanese shit kicker gears in volume because nobody made them...
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...
Smooth Shift Kit
$ 349.00
The design principles that made our Six-Speed Overdrive shift so smooth were applied to create a shift drum/pillow block kit that will bolt on to any 5-speed and give super...
Early Model Comp Sprocket
$ 395.00
Sprocket for the 1985-2006 (except 06 Dyna) compensator. Sprocket & Chain Matrix Features American made heat treated sprockets, which will help with torque increases. 22 tooth 14% increase BenefitsIt’s...
Oil Spout Spacer Kit
$ 40.00
If you install a high horsepower starter motor on your 1993-2006 FLT-FLH, the oil spout will interfere with the end of the starter motor. Our spout spacer kit moves the...
S&S Adapter kit for the BAKER +1
$ 140.00
We highly recommend the +1 Oil Pan for S&S© T124 applications. It makes a lot of power and a lot of heat. The oil feed and return on the right...
DD7: Direct Drive 7-Speed Complete Transmission
$ 6,395.00
This is for a complete transmission, case and all. The sprocket/pulley is not included in the complete transmission assembly. For the acquisition of these components, kindly contact BAKER Drivetrain at...
Ignition Kill Shift Kit
$ 359.00
This slick 5-speed left side drive ignition kill shift kit from BAKER Drivetrain was developed for one thing in mind, Winning! Anybody who wants to launch hard and then up...
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
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Haslett, Michigan 48840 USA | Call Us: 517-339-3835
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