BAKER RSD6 Overdrive Six Speed Right Side Drive Complete Transmission for 1990-1999 Evolution Softail Big Twin Motorcycles

BAKER introduced the RSD (Right Side Drive) in 2001 when the 240 tires came out as a solution to balance big tire customs, and it accomplished just that. More than ever with the popular 300+ tires and the radical 360s in circulation, RSD translates to zero offset and a perfectly balanced radical custom. The convention of offsetting the transmission to the left to get the secondary drive around the tire puts the entire motorcycle out of balance and adversely effects handling. We are able to offer a Right Side Drive transmission in all of the available big twin platforms, Softail, Softail based customs, Dynas, FXRs and FL Touring models. This versatility of case offerings maintains all of the clutch and primary options that are available for the standard LSD (Left Side Drive) configuration. 530 Chain or Belt secondary drive, no problem. Mechanical or Hydraulic Clutch lever assemblies, we got that covered too. Multiple gear ratios offered for your drivetrain tuning needs too.

  • Fits 1990-1999 Evolution Softail and Softail-based customs.

  • Available finishes are raw, wrinkle black (add $250), and show polished (add $300).

  • Features include multiple gear ratio combinations available (both 5 and 6 speed versions), full complement of straight cut gears for the ultimate in strength with the tooth forms ground with diamond coated tooling, works with all primary and clutch configurations on the market, comes standard with zero offset pulleys and 530 chain sprockets with many offset pulleys available at a nominal up-charge, and keeps the motorcycle fully balanced by not needing any drivetrain offsets; strictly a bolt-in design on all versions.

  • Benefits include balancing out a wide-tire motorcycle, enjoying lower RPMs at highway speeds, handling a higher torque capacity, and shifting smoother & crisper with more certainty.

  • Pulley cover is sold separately.

  • Backed by a 5 year manufacturer's limited warranty from BAKER Drivetrain.


BAKER Builder's Kits come fully assembled
and ready to install into your existing
transmission case with no modifications,
shimming, or adjustments required.