http://www.pedparts.co.uk/product/809/rms-racing-crankshaft--piaggio http://www.pedparts.co.uk/product/809/rms-racing-crankshaft--piaggio and what are full circle cranks
That crank is pretty shit. You can get better cranks for the money. Full circle means they have more metal/plastic on them rather than the stock crank which has less material. Means higher crankcase compression. If you look at a stock crank they have a lot less material.