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Transmission for Big Twin 4-Speed
Transmissions Complete
BAKER 4-Speed Handshift Transmissions

4-speed transmission by BAKER Drivetrain

Item №

The love affair with classic motorcycles will never stop and there’s nothing like putting authentic, vintage styled components on your nostalgic bike. That’s why BAKER has taken the time to reinvent the 4-speed transmission. BAKER 4-speeds are intended as stock replacements and work as bolt-in transmission on most models, whether you’re running a stock closed type primary or open belt drive. While looking like the original patterns on the outside, they are packed inside with improvements and extras:

  • Gearset is made out of high grade 8620 steel
  • Gears ride on needle bearings
  • High tensile cast aluminum (A356-T6) transmission case, designed for roller ball bearing main drive gear
  • With 1979-83 Big Twin 5 speed sprocket
  • Stock replacement hand shift top cover
  • Billet steel machined and case hardened shift drum rides on two Permaglide bushings
  • With BAKER Klassic kicker gears
  • Vintage style cast kicker cover
  • Includes 1939-75 style throw-out bearing and release rod

Kicker pedal and kicker arm are not included and must be ordered separately. The selection includes transmissions with 1947-1964 handshift tops:

  • shift lever on transmsission points down
  • works with 1st gear backward shifter gates

Gear ratios:

1st - 2.50:1

2nd - 1.70:1

3rd - 1.25:1

4th - 1:1

Only for mechanical speedo drives. The ratio is 2:1.

  • for tin primary
  • fits Big Twin 1947-1964
  • handshift
  • cast aluminum / steel, bare
  • speedo drive: mechanical / 2:1
  • with 23 tooth sprocket
  • replaces Harley-Davidson part number 33000-47, and 33000-51
  • USA
  • gross weight: 17 kg
net price*
* United States of America: Tax free shipping. Please check your local import fees.
In stock. Ready for immediate delivery from our Würzburg, Germany warehouse.
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