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 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 Piston Ring Set KX250F 04-05 RM-Z250 04-06 (77.00mm) ProX piston rings are made by OEM factories to exact specifications. ProX uses well known brands like Rikken Japan, TP and NPR to be sure...

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...

ProX Clutch Rubber Set KX250F 06-23 + RM-Z250 06 ProX Clutch Basket Rubbers are Nnold sold in kits and are perfect for replacing worn out rubber cushions on all types of clutch baskets. Note Clutch...