What can u do to a BMW C1.
Same engine as Aprilia Leo.
Will the big-bore kit fit??

Why do you think engine parts will not fit ?
I know BMW altered the valve angle, are the valve pockets that big?

PS. Taffspeed have fitted a gear kit successfully.

we can offer aluminium floor boards and a stainless steel exhaust system made in Germany for your C1!
As far as we know you cannot use Leo parts for the C1 engine,
probably Variator could fit but we did not have the chance to try yet.