Great thread!
I've been a dirt bike nut since about 1971 when I first got a Yamaha 360 MX for motocross and with a tire change, TT and flat track.
I soon made the switch to Husky and never looked back.
My fave was a 72 Husky 360 8-speed. Of course it had a regular 4-speed box with a 2-speed primary that you could engage by pulling a lever on the bars.
Best of both worlds, and let me tell you, in high range with the right gearing it had some awesome top end!
It looked like this one:
