Very good quality aftermarket crank for horizontal 50cc Kymco AC, LC and SF10 engines. The crank is a 100% match to the original and is an outstanding aftermarket item. Also a good everyday choice for lightly-tuned 70cc sports engines. Crank requires 12mm gudgeon pins, as originally factory-fitted. When fitting a new big end, we recommend a new set of crankshaft bearings and oil seals. You can add these to your order. Note: the big end is not included in the delivery.