Hi Guys;

I have a mc21 but don't know the exact model or engine I have in the bike. Reason I need to know is I have done a crank seal and I have leaking oil out of the top of the engine case just below the carbs. I want to replace crank seals and need to know how to identify my engine to get the right seals. The bike has HRC heads and barrels not stock ones.

Thank You

Edd