ProX Piston Kit KTM50SX 09-23 + TC50 17-23 (39.47mm) ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is...

ProX Piston Kit KTM50SX 09-23 + TC50 17-23 (39.48mm) ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is...

ProX Piston Kit KTM50SX 09-23 + TC50 17-23 (39.46mm) ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is...

ProX Crankshaft Bearing and Seal Kit KTM50SX 13-22/TC50 17-23 CRANKSHAFT BEARING and SEAL KITS: ProX crankshaft bearings and seals are manufactured at leading OEM factories, mainly in Japan. All...

ProX Top End Gasket Set KTM50SX 09-23 + TC50 17-23 + MC50 21-23 Prox gaskets are manufactured by high quality factories to ProX specifications to ensure top quality sealing. Precision engineering and...

ProX Throttle Cable KTM50SX 21-23 + TC50 21-23 Clutch and Throttle Cables: A complete new program has been added to the already wide program of ProX Racing Parts products.