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BAKER 6 into 4 Transmissions

Big Twin 1936-1964

Convert your old rumblin’ mill into a purring interstate mile eater. These transmissions are replacements for stock 4-speed units. They bolt directly into your stock frame and your stock 4-speed primary and dry clutch fit right up.

The BAKER 6 into 4 has a 1:1 fifth gear and a 0.86:1 overdrive sixth gear for a 500 rpm reduction in cruising rpm on the highway. There is no provision for mechanical speedo drive, but the case accepts a sensor. The sensor-triggering gear has 37 teeth.

Gear ratios:

1st - 2.94:1

2nd - 2.21:1

3rd - 1.60:1

4th - 1:1.23

5th - 1:1

6th - 1:0.86

Due to the extended length of the transmission on the kicker side, the exhaust pipe, oil tank and electric starter mounting brackets may have to be modified. Some inner primary covers require modification to clear the main drive nut.

  • fits Knucklehead 1936-1947, Big Twin Flathead 1937-1948, Panhead 1948-1964
  • cast aluminum / steel
  • with 23 T sprocket, chrome-plated kicker cover
  • USA
Item №
Version
Price incl. VAT*
unit
Availability in warehouse Germany
Big Twin 1936-1964
74-325
black
5,690.00 €
each
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Big Twin 1936-1964
74-326
polished
5,746.30 €
each
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Big Twin 1936-1964
74-327
bare
5,380.00 €
each
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* The price includes German VAT (19% or reduced rate of 7% for Books).

Accessories:

Have any questions?

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