My son has a alpha 50 quad and Iam trying to upgrade with some performance parts. He raced it last season now I would like to make him faster. What all do I need such as a front variator,clutch,racing pipe,etc. Thanks for your help.
You forgot to mention what type of racing your son does. A pipe, reeds & larger carb will give you the easiest and most noticeable power increase. If he is racing MX, the suspension is a major drawback. Plan on doing alot of welding and suspension mods.
The front variator is the primary clutch, (the front pulley that is mounted on the engine crankshaft), as engine rpms increase, the front variator closes, causing the drive belt to ride farther to the outside of the pulley. This changes your overall gearing. I hope that helps.