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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...
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...
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...
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...
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...
DD6: Direct Drive 6-Speed Builder's Kit
$ 3,195.00
* Limited supply of chrome bearing doors with ear available. Please give us a call at 517-339-3835 to order a chrome bearing door. From an engineering standpoint, it is difficult...
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...
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...
The BAKER Cable-Type Side Cover
$ 299.00
The NEW BAKER Cable-Type Side Cover was designed with minimal waste and purposeful mechanical intent. Machined from certified 6061-T6 Billet Aluminum, compatible with OEM or aftermarket transmissions. The BAKER Cable-Type...
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...
DD6: Direct Drive 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. If you enjoy riding for long periods of time...
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...
0.875" Offset Aluminum Pulley
$ 225.00 $ 250.00
32 Tooth Aluminum Pulley with 0.875" Offset PN WT878 Fits 1985-2006 Big Twin and 1991-2003 Sportsters
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Haslett, Michigan 48840 USA | Call Us: 517-339-3835
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