- FEATURES
- FITMENTS
Made to satisfy the old school tendencies while providing the ability to run reasonable RPM’s at highway speeds. 6-into-4 Shovelhead and Panhead riders will love this transmission and the ability to ride hard with their friends on late-model bikes.
The bearing door will be built with a polished billet aluminum bearing door.
The top cover will be built with a polished, forged aluminum top cover with neutral switch.
- OD6-based transmission inside
- Baker 6-speed into 4-speed transmission has many gear ratio options
- Many case, shift system, and cover options
- Smooth out the rattle on the highway
- Stay in the powerband
See how the Baker 6-into-4 transmission was exemplified as the archetypal motorcycle transmission and used as a focal point for the How It's Made television show on the Discovery Channel.
The 6-Into-4 Transmission case comes in two different versions. Our 1936-64 case has no ear, to work with the factory primary. Our 1965-1986 version includes the primary ear bosses. These can be used with stock primary applications, belt drive applications, or running no primary plate at all. For the 1936-1964 Tapered Mainshaft applications, please note that the 6-into-4 case does not contain an alignment track or a provision for the primary adjustment bolt that you would normally find on a stock case.
4 different mainshafts are available for Knucklehead, Panhead or Shovelhead:
1936 to 1964 Tapered Mainshaft**
1965 to 1969 Tapered Mainshaft
1970 to E1984 Tapered Mainshaft
Late 1984 to 1986 Long Tapered Mainshaft
1st Gear Ratio: The 2.94 1st gear ratio fits 1936-1986 FL & FX models. This gear ratio is an all-around good ratio.
2nd Gear Ratio will be a 2.21 ratio.
**For 1936-1964 Tapered Mainshaft applications, please note that the 6-into-4 case does not contain an alignment track or a provision for the primary adjustment bolt that you would normally find on a stock case.