ProX Steel Intake Valve KTM520/525 00-07 + 450/525XC ATV 0 Next to the Titanium valves ProX also offers a complete line of steel valves. The ProX steel valves are manufactured of premium grade steel...

ProX Big End Pin (35x64.70mm) KTM520/525 Our chromed crank pins are specially designed for the application. Every ProX crank pin is machined precisely and treated to get the best hardness and...

ProX Big End Cage (35x43x22) KTM520/525 Flat/Silver High output engines require high end parts. For these specific engines, like motocross and ATV engines we offer flat silver big end cages. These...

ProX Steel Exhaust Valve CRF150R 07-23 Next to the Titanium valves ProX also offers a complete line of steel valves. The ProX steel valves are manufactured of premium grade steel to exact OEM...

ProX Steel Exhaust Valve/Spring Kit RM-Z450 07 Next to the Titanium valves ProX also offers a complete line of steel valves. The ProX steel valves are manufactured of premium grade steel to exact OEM...

ProX Top End Gasket Set KTM525XCATV 08-11 -Outlaw525 07-11 Prox gaskets are manufactured by high quality factories to ProX specifications to ensure top quality sealing. Precision engineering and the...