Cam

[EX400rider]

Wat does a cam do. I hear that they make your ride faster. Wat is difference in stage 1 and 2. Is it worth buying

[GPracer2500]

Camshafts control the opening and closing of the valves. Aftermarket cams typically will open the valves earlier and leave them open longer. The goal is to move the most amount of air as possible through the engine.