ProX Inner Clutch Hub KX250F 04-17 + RM-Z250 04-06 ProX offers a complete line of inner clutch hubs for the Dirtbike and ATV segment. The inner hubs are manufactured by the leading OEM factory in...

ProX Valve Stem Seal KX250F 04-23 + RM-Z250 04-06 ProX offers a wide range of valve stem seals for the MX, Dirt Bike, Road Bike and ATV segment.The seals are manufactured by the leading OEM factories...

ProX Steel Intake Valve/Spring Kit KX250F 04-06 RM-Z250 04-06 Next to the Titanium valves ProX also offers a complete line of steel valves. The ProX steel valves are manufactured of premium grade...

ProX Con Rod Kit KX250F 04-09 + RM-Z250 04-23 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 Clutch Spring Kit KX250F 05-19 + RM-Z250 05-06 ProX Heavy Duty Clutch Spring Kits are approximately 10% stiffer than the OEM spring and will reduce clutch slippage under extreme conditions for...

Prox Steel Plate Set KX250F 04-20 + RM-Z250 04-23 + YZ250F 19-23 ProX clutch steel and alloy plates are manufactured by the leading OEM factories, mainly in Japan. All plates are made to exact...