bike engines don't have separate gearbox like a car its all one, Plus with these conversions theres no reverse, u gotto add a starter motor for reverse but was sloow, now theres a proper add on which is powered by engine
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my cousin doing a promotive r1 conversion to his mini engine up front, when i get round to do mine i'll be using gsxr1000 lump stronger gearbox never blown any on bikes had, but r1s i blow 3
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