Gearing kit POLINI MBK Target, 17/40 cogs  300g  -  P2021336
We know how it goes: you've done your best to tune up your motor to bring it up to an appreciable performance level - then find that your speed isn't going any where cause the original transmission only helps with acceleration rather than bringing the power performance up where you really want it. Always at the limit, your motor works it's heart out for you, but..... which in turn means stress, wear and tear for crankcase, bearings and pistons

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