Engine

ProX High Compression Piston Kit YZ450F 10-13 13.5:1 (96.95mm) 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 used for all major Japanese engine...

ProX Ignition Cover Gasket CRF150R 07-24 Ignition Cover Gaskets Next to the high quality Top End & Complete gaskets sets, ProX Racing Parts offers a complete range of ignition cover gaskets. These ProX ignition cover gaskets are a convenient and...

ProX Ignition Cover Gasket WR250F 03-13 Ignition Cover Gaskets Next to the high quality Top End & Complete gaskets sets, ProX Racing Parts offers a complete range of ignition cover gaskets. These ProX ignition cover gaskets are a convenient and...

ProX Ignition Cover Gasket YZ250 99-23 + YZ250X 16-23 Ignition Cover Gaskets Next to the high quality Top End & Complete gaskets sets, ProX Racing Parts offers a complete range of ignition cover gaskets. These ProX ignition cover gaskets are a...

ProX Inner Clutch Hub CR125 00-07 + CRF250R/X 04-09 + KTM2 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 Japan. The die-cast alloy parts are machined to...

ProX Inner Clutch Hub CR125 86-99 + KTM125/20098-05 + 125 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 Japan. The die-cast alloy parts are machined to OEM...

ProX Inner Clutch Hub CR250 90-91 + CR500 90-01 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 Japan. The die-cast alloy parts are machined to OEM...

ProX Inner Clutch Hub CR250 92-07 + CRF450R 02-08 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 Japan. The die-cast alloy parts are machined to OEM...

ProX Inner Clutch Hub CRF250R 10-17 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 Japan. The die-cast alloy parts are machined to OEM specifications and...

ProX Inner Clutch Hub CRF250R 18-21/CRF250RX 19-21 ProX offers a complete line of inner clutch hubs for the dirt bike and ATV segment. The inner hubs are manufactured by the leading OEM factory in Japan. The die-cast alloy parts are machined to OEM...

ProX Inner Clutch Hub CRF450R 09-10 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 Japan. The die-cast alloy parts are machined to OEM specifications and...

ProX Inner Clutch Hub CRF450R 11-12 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 Japan. The die-cast alloy parts are machined to OEM specifications and...

ProX Inner Clutch Hub CRF450R 13-16 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 Japan. The die-cast alloy parts are machined to OEM specifications and...

ProX Inner Clutch Hub CRF450R 17-20 + CRF450RX 17-20 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 Japan. The die-cast alloy parts are machined to OEM...

ProX Inner Clutch Hub CRF450X 05-17 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 Japan. The die-cast alloy parts are machined to OEM specifications and...

ProX Inner Clutch Hub KX250 '21-23 + KX250XC '21-23 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 Japan. The die-cast alloy parts are machined to OEM...

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 Japan. The die-cast alloy parts are machined to OEM...

ProX Inner Clutch Hub KX450 '21-23 + KX450XC '21-23 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 Japan. The die-cast alloy parts are machined to OEM...

ProX Intake Valve I YZ400F 98-99 + WR400F98-00 + YZ426F00 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 specifications and tolerances.The ProX valve...

ProX Intake Valve II YZ400F98-99 + WR400F98-00 + YZ426F00 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 specifications and tolerances.The ProX valve...

ProX Piston Bearing CR80/85 86-07 + YZ80/85 93-23 + KTM SX85 03-23 ProX offers a complete line of piston pin bearings for the Dirtbike, ATV, PWC and 50cc/scooter segment.The pistons pin bearings are manufactured by the leading Japanese OEM factories.All...

ProX Piston Kit Beta 350RR 15-23 13.2:1 (87.96mm) 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 used for all major Japanese engine manufacturers. ProX...

ProX Piston Kit Beta 350RR 15-23 13.2:1 (87.97mm) 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 used for all major Japanese engine manufacturers. ProX...

ProX Piston Kit Beta 350RR 15-24 13.2:1 (87.98mm) 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 used for all major Japanese engine manufacturers. ProX...

ProX Piston Kit Beta 390RR 15-24 12.5:1 (87.96mm) 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 used for all major Japanese engine manufacturers. ProX...

ProX Piston Kit Beta 390RR 15-24 12.5:1 (87.97mm) 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 used for all major Japanese engine manufacturers. ProX...

ProX Piston Kit Beta 390RR 15-24 12.5:1 (87.98mm) 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 used for all major Japanese engine manufacturers. ProX...

ProX Piston Kit Beta 430RR 15-24 11.9:1 (94.96mm) 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 used for all major Japanese engine manufacturers. ProX...

ProX Piston Kit Beta 430RR 15-24 11.9:1 (94.97mm) 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 used for all major Japanese engine manufacturers. ProX...

ProX Piston Kit Beta 430RR 15-24 11.9:1 (94.98mm) 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 used for all major Japanese engine manufacturers. ProX...