whats the difference

[taber hodaka]

What is the differences between the 93A and the 93B??-------------Clarence

[Tether]

Might be other things but the main things I know of are; the pipe on the B was the flame thrower type with an approved spark arrestor and the frame on the B has more reinforcements at the swing arm mount.

[dirty_rat]

I think the primary gears were also different on the 93B, as were the sprockets. The 93A had primary gear 914506R and the 93B had primary gear 934502. The 93B came with a 14 tooth countershaft sprocket and 62 tooth rear, compared to the 93A which had 15 tooth countershaft sprocket and 50 tooth rear.

[taber hodaka]

Good research, I double checked and you are right on! ---------Clarence