High quality Top Racing full circle crankshaft.The Portuguese crankshaft specialist has been a guarantor for high quality crankshafts for years. State-of-the-art production facilities and over 50 years of experience make Standard as well as Racing crankshafts the first choice.This Top Racing full circle crankshaft increases the initial compression in the crankcase, that leads to a significantly better filling ratio. The rev speed shifts to the upper range. Due to the increased flywheel mass of this full metal design, not only the power output but also the torque increases. Preferably this crankshaft should be used together with a 70cc cylinder. With a 50cc cylinder, the increase in power is somewhat lower.The crankshaft comes with small end bearing.Made in Europe!