chucky wrote:does the mc 21 dry clutch fit on a standard mc 21 bottom end also the does the se gearbow fit in a standard mc 21 and is it a cr gearbox and is it any good for the road?

The cases are the same for an R, SE and SP engine, so you can swap a wet clutch out for a dry clutch no problem (if you have all the parts from the dry clutch).

I have run a dry clutch on the road and it was fine. Basically just like if you had a ducati. You will get around the same mileage out of the plates unless you feel the need to be the first away from every intersection.
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Charles Gallant