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