Baker Drivetrain - The Drivetrain Authority for Transmissions and parts for Harley-Davidson and American V Twin Motorcycle

BAKER Drivetrain is the American V-Twin leader and reigning authority, in aftermarket drivetrain products for American motorcycles. We engineer and manufacture only top-shelf premium-quality components for your Harley-Davidson and American custom motorcycle. We take every measure to make sure that BAKER stands for quality in this industry. Top builders that you see on your TV, H-D & dealers and mechanics, and regular gearheads rely on our excellent consultation to ensure they get the exact BAKER product that they need. These experts can also can be rest assured that we are on their side with our superior product support and warranty after they make the purchase.

BAKER Drivetrain | The Drivetrain Authority - Torque Box Softail Transmission for Custom Motorcycle only

The torque output of an engine is proportional to the bore and stroke. Engines make torque and drivetrain components take torque. It is torque, not horsepower that destroys clutches, transmissions, and drive belts. The torque capacity of a transmission is proportional to the gear width and the center distance between the two shafts with the center distance being the most important variable. EXAMPLE:The small front wheel drive cars at GM like the Cavalier and Cobalt have a Getrag F23 manual transmission with a center distance of roughly 3.0”*. Bert designed this transmission for GM. The torque capacity of that unit is 165 ft-lbs. The Tremec (Borg Warner-based) T56 that goes in the Corvettes has a center distance of roughly 3.75” and has a torque capacity of 450 ft-lbs. By increasing the center distance 25% the torque capacity increased 173%. A small increase in center distance yields big increases in torque capacity. All stock Harley transmissions and aftermarket transmissions have a centre distance of 2.5”*. By increasing the center distance 20% to 3.0” the Torquebox conservatively increases the torque capacity to 250 ft-lbs, continuous duty! In the early Torquebox design stages, the goal was set to design a continuous duty 250 ft-lb gearbox that visually looked like a 450 ft-lb gearbox on the outside. We achieved this by taking design cues from classic race-bred American superchargers and not having any excess material, anywhere. We achieved our goal. At Biketoberfest 2005, the Torquebox was unveiled and caught the eye of Kendall Johnson. Regarded as the premier performance engine builder in our industry, he called it “…all business!”. The Torquebox is available as a 5 or 6-speed, left or right side drive.
The 6-speed is identical to the 5-speed except for the addition of two gears and a different drum. The right side drive version is the same as the left except for the mainshaft. All frame, starter, and clutch interfaces are identical to stock 2.5”-based designs. Shift system design innovations and hardware give light, short, precise, crotch rocket type shifts For a given amount of torque, a larger center distance transmission must be used in a car as compared to a motorcycle because vehicle weight becomes a significant variable. The ultimate transmission for custom use

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Baker Drivetrain RSD 6 speed Transmission and Primary Drive, Drop Starter Slam Clutch System with Hydraulic or Mechanical Shroud for Custom Builds only - in Polished and Chrome finish

Baker Drivetrain - The Drivetrain Authority for Transmissions and parts for Harley-Davidson and American V Twin Motorcycle - Baker Drivetrain RSD 6 speed Transmission and Primary Drive, Drop Starter Slam Clutch System with Hydraulic or Mechanical Shroud for Custom Builds only - in Polished and Chrome finish

Baker Drivetrain RSD 6 speed Transmission and Primary Drive, Drop Starter Slam Clutch System with Hydraulic or Mechanical Shroud for Custom Builds only - in Polished and Chrome finish

Baker Divetrain Drop Starter Slam Clutch System (DSSC) Custom Builds Only 6 Speed Softail 2.94 1st Gear 0.86 6th

DSSC Features:

    * RSD6 6-speed gearset with 2.3-inch shorter mainshaft
    * 43 tooth sprocket-basket with 9 friction plates
    * 28 tooth motor sprocket - no compensator
    * 88 pitch 428-2 double row chain
    * O.E. type chain adjustment and shoe
    * Stock-like 1.54 ratio primary reduction
    * Doweled top cover for positive location
    * Compatible with Spyke starters (not included)
    * 66 tooth ring gear for big motors
    * No jackshaft on the starting system
    * Hydraulic clutch actuator has a 1.5-inch piston
    * Mechanical clutch actuator compatible with stock cables
    * With or without neutral switch

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BAKER Drivetrain | The Drivetrain Authority - Big Twin Transmission Builders Kit Direct Drive 6-Speed (DD6) for Harley Davidson FXR, FLT, FLH, Dyna and Softail Motorcycles

BAKER Drivetrain | The Drivetrain Authority - Big Twin Transmission Builders Kit Direct Drive 6-Speed (DD6) for Harley Davidson FXR, FLT, FLH, Dyna and Softail Motorcycles

with o.86 6th gear

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BAKER Drivetrain | The Drivetrain Authority - Direct Drive 6-Speed (DD6) Transmission for Harley-Davidson 90-97, 98-99, 00-05 Softail, 90-94 FXR, 90-92, 93-97, 98FLT-FLH, 99 FXR, 91-97, 98, 99-00, 2001-2005 Dyna in Raw, Wrinkle Black, Polished & Chrome

BAKER Drivetrain | The Drivetrain Authority - Direct Drive 6-Speed (DD6) Transmission for Harley-Davidson 90-97, 98-99, 00-05 Softail, 90-94 FXR, 90-92, 93-97, 98FLT-FLH, 99 FXR, 91-97, 98, 99-00, 2001-2005 Dyna in Raw, Wrinkle Black, Polished & Chrome

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Baker Drivetrain Big Twin Right Side Drive 5-Speed (RSD5) for Harley Davidson FLT, FLH, Dyna and Softail Motorcycle in Raw, Wrinkle Black, Polished and Chrome finish

Baker Drivetrain - The Drivetrain Authority for Transmissions and parts for Harley-Davidson and American V Twin Motorcycle - Baker Drivetrain Big Twin Right Side Drive 5-Speed (RSD5) for Harley Davidson FLT, FLH, Dyna and Softail Motorcycle in Raw, Wrinkle Black, Polished and Chrome finish

Baker Drivetrain Big Twin Right Side Drive 5-Speed (RSD5) for Harley Davidson FLT, FLH, Dyna and Softail Motorcycle in Raw, Wrinkle Black, Polished and Chrome finish

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BAKER Drivetrain | The Drivetrain Authority - Big Twin Right Side Drive Transmission Builders Kit for 5-Speed (RSD5) Harley Davidson FXR, FLT, FLH, Dyna and Softail Motorcycles

BAKER Drivetrain | The Drivetrain Authority - Big Twin Right Side Drive Transmission Builders Kit for 5-Speed (RSD5) Harley Davidson FXR, FLT, FLH, Dyna and Softail Motorcycles

Builders Kits/Custom Builds Only

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BAKER Drivetrain | The Drivetrain Authority - Big Twin Right Side Drive 6-Speed (RSD6) Transmission Assembly for Harley Davidson FLT, FLH, Dyna and Softail Motorcycles in Raw, Wrinkle Black, Polished and Chrome finish

BAKER Drivetrain | The Drivetrain Authority - Big Twin Right Side Drive 6-Speed (RSD6) Transmission Assembly for Harley Davidson FLT, FLH, Dyna and Softail Motorcycles in Raw, Wrinkle Black, Polished and Chrome finish

Custom Builds Only

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BAKER Drivetrain | The Drivetrain Authority - Right Side Drive 6-Speed - Builders Kits for Harley-Davidson Softail, FXR, Dyna and FLT-FLH Motorcycle

BAKER Drivetrain | The Drivetrain Authority - Right Side Drive 6-Speed - Builders Kits for Harley-Davidson Softail, FXR, Dyna and FLT-FLH Motorcycle

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Baker Drivetrain - Baker Transmissions Magnesium Transmission Side Cover for Harley-Davidson Big Twin Motorcycle in Raw, Polished and Chrome finish

Baker Drivetrain - Baker Transmissions Magnesium Transmission Side Cover for Harley-Davidson Big Twin Motorcycle in Raw, Polished and Chrome finish

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BAKER Drivetrain 29, 30, 31, 32, 33 & 34 teeth Aluminium Alloy Race Transmission Pulley for Harley Davidson Big Twin Motorcycle

Baker Drivetrain - The Drivetrain Authority for Transmissions and parts for Harley-Davidson and American V Twin Motorcycle - BAKER Drivetrain 29, 30, 31, 32, 33 & 34 teeth Aluminium Alloy Race Transmission Pulley for Harley Davidson Big Twin Motorcycle

BAKER Drivetrain 29, 30, 31, 32, 33 & 34 teeth Aluminium Alloy Race Transmission Pulley for Harley Davidson Big Twin Motorcycle

Sprocket Spacer (Required w/BAKER Racing & Long Life Pulleys. Sprocket Spacer Seal Required with BAKER Racing & Long Life Pulleys

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BAKER Drivetrain 29, 30, 31, 32, 33 and 34 teeth Long Life Steel Transmission Pulley for all Harley-Davidson Big Twin Motorcycles

BAKER Drivetrain 29, 30, 31, 32, 33 and 34 teeth Long Life Steel Transmission Pulley for all Harley-Davidson Big Twin Motorcycles

Sprocket Spacer required with BAKER Racing & Long Life Pulleys.
Sprocket Spacer Seal required with BAKER Racing & Long Life Pulleys

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BAKER Drivetrain offset 530 Chain Transmission Sprocket with 0.2in, 0.5in & 0.9in Offset and 19, 20, 21, 22, 23 & 24 teeth for 1985 up Harley davidson Big Twin Motorcycle

Baker Drivetrain - The Drivetrain Authority for Transmissions and parts for Harley-Davidson and American V Twin Motorcycle - BAKER Drivetrain offset 530 Chain Transmission Sprocket with 0.2in, 0.5in & 0.9in Offset and 19, 20, 21, 22, 23 & 24 teeth for 1985 up Harley davidson Big Twin Motorcycle

BAKER Drivetrain offset 530 Chain Transmission Sprocket with 0.2in, 0.5in & 0.9in Offset and 19, 20, 21, 22, 23 & 24 teeth for 1985 up Harley davidson Big Twin Motorcycle

Sprocket Spacer required with 0.200 0.5 0.9 & Custom Offset Sprockets. Sprocket Spacer Seal required with 0.200 0.5 0.9 & Custom Offset Sprockets

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Baker Drivetrain 21, 22 & 23 tooth Compensating Sprockets and Primary Chain for 198up Harley Davidson FLT-FLH, FXR, Softail and Dyna Motorcycle

Baker Drivetrain 21, 22 & 23 tooth Compensating Sprockets and Primary Chain for 198up Harley Davidson FLT-FLH, FXR, Softail and Dyna Motorcycle

Includes primary chain

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BAKER Drivetrain | The Drivetrain Authority - 5-Speed Transmission Builders Kits (DD5) for 1980 up Harley Davidson FXR, FLT, FLH and Softail Motorcycle

BAKER Drivetrain | The Drivetrain Authority - 5-Speed Transmission Builders Kits (DD5) for 1980 up Harley Davidson FXR, FLT, FLH and Softail Motorcycle

Gear Ratios: 1st 2.94 2nd 2.21 3rd 1.60 4th 1.23 5th 1.00Note: 3.24 1st gear is available for 5-speed Builders Kits. Replace second digit of part number with a 1. For example. 85-89 Softail w/3.24 1st gear is P/N T511K. Note: R-Ratio 1st & 2nd is available for 5-speed Builders Kits. Replace second digit of part number with a 21. For example. 85-89 Softail w/R ratio 1st & 2nd is P/N T5211K.

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BAKER Drivetrain | The Drivetrain Authority - (OD6) Six Speed Overdrive Assemblies for 1970-E84 Harley-Davidson FL-FX Shovelhead Motorcycle and S&S Cycle Case in Raw, Wrinkle Black and Polished finish with the option of Kicker

BAKER Drivetrain | The Drivetrain Authority - (OD6) Six Speed Overdrive Assemblies for 1970-E84 Harley-Davidson FL-FX Shovelhead Motorcycle and S&S Cycle Case in Raw, Wrinkle Black and Polished finish with the option of Kicker

Gear Ratios: 1st 2.94 2nd 2.21 3rd 1.60 4th 1.23 5th 1.00 6th .86 Note: R Ratio 1st & 2nd are available for 1970-E84 Six-Speed Trannys. Replace 3rd digit of part # with a 21. For example 70-E84 FL/FX in Raw S & S case w/R ratio 1st & 2nd is P/N K64212R.

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Baker Drivetrain Outboard Transmission Bearing Support for Pre 99 Harley-Davidson Softail Motorcycle

Baker Drivetrain Outboard Transmission Bearing Support for Pre 99 Harley-Davidson Softail Motorcycle

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Baker Drivetrain Big Twin Six-Speed Overdrive Builders Kits (OD6) for Harley Davidson FXR, FLT-FLH, Softail and Dyna Motorcycle with 1st and 6th Gear Options

Baker Drivetrain Big Twin Six-Speed Overdrive Builders Kits (OD6) for Harley Davidson FXR, FLT-FLH, Softail and Dyna Motorcycle with 1st and 6th Gear Options

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Baker Drivetrain Big Twin Six-Speed Overdrive (OD6) Billet Transmission for Harley Davidson Softail, Chopper and Custom Motorcycle

Baker Drivetrain Big Twin Six-Speed Overdrive (OD6) Billet Transmission for Harley Davidson Softail, Chopper and Custom Motorcycle

With Baker Drivetrain Billet case

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Baker Drivetrain Big Twin Right Side Drive 5-Speed (RSD5) for Harley Davidson FLT, FLH, Dyna and Softail Motorcycle in Raw, Wrinkle Black, Polished and Chrome finish

BAKER Drivetrain | The Drivetrain Authority - Big Twin Right Side Drive 5-Speed (RSD5) Transmission Assemblies for Harley Davidson FLT, FLH, Dyna and Softail Motorcycles in Raw, Wrinkle Black, Polished and Chrome finish

Complete Transmissions/Custom Builds Only

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Baker Drivetrain Big Twin Six-Speed Overdrive (OD6) Transmission for Harley Davidson FLT, FLH, FXR, Dyna and Softail, Chopper and Custom Motorcycle in Raw, Wrinkle Black, Polished and Chrome finish

Baker Drivetrain Big Twin Six-Speed Overdrive (OD6) Transmission for Harley Davidson FLT, FLH, FXR, Dyna and Softail, Chopper and Custom Motorcycle in Raw, Wrinkle Black, Polished and Chrome finish

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BAKER Drivetrain | The Drivetrain Authority - XL6 Six-Speed Overdrive Conversion Kit 91-94 Harley-Davidson Sportster & Buell Motorcycle

BAKER Drivetrain | The Drivetrain Authority - XL6 Six-Speed Overdrive Conversion Kit 91-94 Harley-Davidson Sportster & Buell Motorcycle

The BAKER™ XL6 is a six-speed overdrive ‘cartridge style’ gearset that converts any existing 1991-2003 Sportster/Buell to a BAKER™ six speed. 2nd through 5th gear ratios are effectively the same as stock, 6th gear is a true overdrive. Stock gear widths in 1st through 5th were retained and a beefy 6th gear was added. This was accomplished by utilizing an exclusive BAKER dog tooth design that is an industry first for American motorcycles. OVER a 500 RPM drop in top-gear cruising RPM at 75 MPH REDUCED vibration. IMPROVED fuel economy. REDUCED wear and tear on your engine. SMOOTHER shifting and improved neutral finding. XL6 Kits include: 6061-T6 trap door, Complete gearset including shafts and gears, less the 5th (maindrive) gear pair. Gearset is assembled to the trap door including bearings, ball bearings, thrust washers, and retainging rings. Shift drum and detent plate with optimized geometry. No flimsy retaining clip to hold the detent plate to the drum. Ours is bolted on with a machine screw. Low effort detent spring. Three billet steel shift forks with roller pins and cotter pins. Steel template for accurate case modification. ‘XL6’ engraved derby cover (Part#’s 202 & 203).

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