ProX Titanium Exhaust Valve YZ450F 14-19 + WR450F 16-19 ProX offers a complete range of high quality Titanium Valves for MX and ATV segment.The ProX Titanium Valves are forged in one piece for extra...

ProX Titanium Intake Valve YZ450F 20-22 + WR450F 21-23 ProX offers a complete range of high quality Titanium Valves for MX and ATV segment. The ProX Titanium Valves are forged in one piece for extra...

ProX Con Rod Kit YZ450F 10-19 + WR450F 16-20 One of our core product line, where we became famous with. Our ProX Connecting Rod Kits are made out of the toughest alloys available today and are made...

ProX Top End Gasket Set YZ450F 18-19 + YZ450FX 19 + WR450F ProX Top End gasket sets offer any gasket you need for a top end rebuild. From head gasket to valve stem seal, it will be in the set. Simple...

ProX Throttle Cable YZ450F 18-22 + WR450F 19-23 Clutch and Throttle Cables: A complete new program has been added to the already wide program of ProX Racing Parts products.

ProX Titanium Exhaust Valve YZ450F 20-22 + WR450F 21-23 ProX offers a complete range of high quality Titanium Valves for MX and ATV segment.The ProX Titanium Valves are forged in one piece for extra...