The 4 speed transmission was for the early MC models, and was a wide ratio 4 speed. The 4 speed transmission had a first gear ratio that was between the 6 speed's 1st and 2nd gear and the 4th gear was just a hair lower ratio than the 6 speed's 6th gear.
That is why Gabe was using the 13/52 final drive to race in the rugged terrain BJEC and Arkansas Hare Scrambles series.
I raced the bike at the CrossTimbers Enduro at Oklahoma city about 12 years ago.
I preferred the 6 speed transmission.
I have one or two used 4 speed transmission clusters in my stock.
Jim
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