Here’s an easy way to bump your power! A performance cam shaft for your GY6 A motor (qmj157 / qmj152) is great to add extra power to a big bore kit. Cam shafts can be purchased to suit your riding style. Different cam lobes and angles will change the duration of your valves. Below is a list so you can choose your proper cam in the drop down at check out.
choose from A9, A10, A11, A13, and A14 Camshafts.