BMW Airhead R100RT Rear Wheel Drive Gear Case Differential Disc Brake Style 32/11

32x11 is 2.90, 2.9 turns of the input for 1 turn of the wheel

From 1982, I know this because it had a tag that said so. Should fit all 80-84 twin shock bikes. Feels real smooth and not any junk on the magnetic plug. Check pictures for spline ware, I would run it but I don't know how long. There are no disc brake ones on here that I could find.

Thanks for looking