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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...
34-Tooth Compensator Sprocket for Twin Cam & M8 Models
$ 129.00
BAKER Drivetrain unveils the final solution to the late model compensator problems. The BAKER Drivetrain compensator sprocket is engineered with an annular oil distribution system that scavenges primary oil and...
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...
Basic Logo T-Shirt
$ 25.00
Not trying too hard here, this is the tried and true basic black shirt with the BAKER logo simply placed upon it. Made in the USA. 50% Cotton/ 50%...
Truss Style Shift Lever Kit
$ 99.00
Known to fail, BAKER took the all-too-common-looking stock shifter and improved it in every way with a new design. The most common issue with the stock transmission shift lever...
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....
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...
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...
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...
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...
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...
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...
Replacement Sprocket Spacer Seal
$ 14.95
This is a replacement sprocket spacer seal that we found lasts longest. Fitment 2.219 x 3.375 x 0.266 PN 12067B
Replacement Clutch Pack Kits
$ 199.00
Clutch Pack Kits for BAKER clutchesBAKER Clutch Pack Replacement Kits contain all necessary fiber and steel plates to restore like new performance to your BAKER clutch. These are original equipment plates...
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
Speedometer Recalibration Unit
$ 169.00
Starting in 1994, the factory started using electronic speedos on some of the models. Today, all models use this. If you are changing the transmission pulley, rear wheel pulley, rear...
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...
Shift Forks for 2005-2010 Big Dog
$ 279.00
OEM replacement shift forks for Big Dog models from 2005-2010 Fitment 2005-2010 Big Dog models Detail PN: 191B-DD6R (4-5 Dog Clutch Fork) PN: 192B-DD6R (2nd Gear Fork) PN: 193B-DD6R (3rd...
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...
Hydraulic Side Cover
$ 525.00
'07-'17 Fitment Taking design cues from our ever increasing product family known as Function Formed, we have wrapped the outer design around the functional components found inside. No garnish, or...
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
9-Plate Ball & Ramp for Big Dogs
$ 3.00
OEM replacement ball and ramp set for Big Dog models from 2005-2010 with 9-plate clutch configuration. 9-Plate Ball and ramp is required when upgrading from 12-plate to 9-plate configurations. Fitment...
Spacer for Sprocket or Pulley
$ 27.99
33344-94S If you are a seasoned technician, you have seen a severely worn sprocket spacer. Over time and miles with dirt and grit, the stock 33344-94 spacer is too soft...
+1.5 Oil Pan
$ 795.00
Keep your 2009-2016 Touring Model cool. Todays Big Twin engine makes a lot more power and a lot more heat than its predecessor of 20 years ago. In 1993, the...
11165A O-ring for Quad Seal
$ 1.99
#031 Buna O-ring for Quad Seal PN 11165A
Kicker Accessories
$ 95.00
Pedal We used to purchase our pedal assemblies from a supplier, these assemblies were prone to break, due to being made out of shit metal. So after receiving many death...
Cruise Drive Primary Bundle
$ 999.00 $ 997.00
This kit is everything you need to update your cruise drive primary. It includes: Product Part Number Retail Cost Comp Sprocket 730-67 or 730-M8 $599 Armored Attitude Adjuster 177-67...
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...
120-DD6R Dual Lip Seal
$ 16.99
Dual lip seal DC35MMx52MMx10MM PN 120-DD6R
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...
121-DD6R Seal
$ 9.99
Left side countershaft end cap seal, 52mm X 6.5mm PN 121-DD6R
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...
Primary O-ring for 2005-2010 Big Dog
$ 39.99
OEM replacement primary case o-ring, 55″ Viton. For Big Dog models from 2005-2010. Fitment 2005-2010 Big Dog models Detail PN: 3026A-DSSC
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...
Replacement Neutral Switch
$ 14.25
Replacement neutral switches that have been tested to be dependable. See the next "Fitment" tab to identify which is for the application that you need. Fitment Application 1: PN 21-436 (Fitment...
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...
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...
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...
11067 - M30 Snap Ring
$ 2.99
Snap Ring, M30, Eaton Style, Heavy Duty PN 11067
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...
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Haslett, Michigan 48840 USA | Call Us: 517-339-3835
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