Prox
ProX is a globally recognized brand specializing in motorcycle engine components and rebuild kits, including pistons, gasket kits, crankshafts and clutch parts. Designed for motocross, dirt bikes and off-road machines, ProX delivers OEM-quality precision and durability. Their lineup also includes wheel spacer kits, valve kits and bearing solutions for complete engine and chassis maintenance. Riders trust ProX for high-performance engine rebuild parts and reliable aftermarket components.
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Prox - 34.1220 - Gasket Kit - Complete - Fits 2000-2002 Honda CR125R
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$93.95Prox - 09345520 - Gasket Kit - Complete - HondaFeaturesSpecsEngine Type2-StrokeTypeCompleteUnitsKitProduct NameGasket KitRiding StyleOff-RoadFitment2000-2002HondaCR1252000-2002HondaCR125R$93.95 -
Prox - 35.6019 - Top End Gasket Set - Gas Gas/Husqvarna/KTM - Fits 2009-2023 KTM 65 SX
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$30.95Prox - 09345775 - Top End Gasket Set - Gas Gas/Husqvarna/KTMFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsRiding StyleOff-RoadUnitsSetEngine...$30.95 -
Out of stock
Prox - 35.4409 - Top End Gasket Set - Kawasaki KX 500
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$44.95Prox - 09345770 - Top End Gasket Set - Kawasaki KX 500FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsTypeTop EndUnitsSetEngine...$44.95 -
Prox - 35.4334 - Top End Gasket Set - Kawasaki/Suzuki - Fits 2004-2005 Kawasaki KX250F, 2006-2008 Kawasaki KX250F, 2004-2006 Suzuki RM-Z250
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$62.95Prox - 09345766 - Top End Gasket Set - Kawasaki/SuzukiFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsProduct NameGasket SetUnitsSetTypeTop...$62.95 -
Prox - 35.3341 - Top End Gasket Set - Suzuki RM-Z 250
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$72.95Prox - 09345738 - Top End Gasket Set - Suzuki RM-Z 250FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type4-StrokeUnitsSetRiding...$72.95 -
Out of stock
Prox - 35.4215 - Top End Gasket Set - Kawasaki KX 125 - Fits 1995-1997 Kawasaki KX125
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$39.95Prox - 09345756 - Top End Gasket Set - Kawasaki KX 125FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type2-StrokeProduct NameGasket...$39.95 -
Out of stock
Prox - 35.3323 - Top End Gasket Set - Suzuki RM 250 - Fits 2003-2005 Suzuki RM250
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$41.95Prox - 09345733 - Top End Gasket Set - Suzuki RM 250FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetEngine Type2-StrokeProduct...$41.95 -
Out of stock
Prox - 35.3311 - Top End Gasket Set - Suzuki RM 250
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$34.95Prox - 09345728 - Top End Gasket Set - Suzuki RM 250FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type2-StrokeProduct NameGasket...$34.95 -
Out of stock
Prox - 35.3224 - Top End Gasket Set - Suzuki RM 125
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$25.95Prox - 09345725 - Top End Gasket Set - Suzuki RM 125FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type2-StrokeProduct NameGasket...$25.95 -
Prox - 35.3122 - Top End Gasket Set - Suzuki RM 85 - Fits 2002-2018 Suzuki RM85
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$22.95Prox - 09345717 - Top End Gasket Set - Suzuki RM 85FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type2-StrokeProduct NameGasket...$22.95 -
Prox - 35.2423 - Top End Gasket Set - Fits 2003-2006 Yamaha WR450F
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$67.95Prox - 09345710 - Top End Gasket Set - YamahaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetProduct NameGasket SetTypeTop EndEngine...$67.95 -
Prox - 35.2426 - Top End Gasket Set - Yamaha WR 450 F - Fits 2007-2015 Yamaha WR450F
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$72.95Prox - 09345711 - Top End Gasket Set - Yamaha WR 450 FFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetEngine Type4-StrokeProduct...$72.95 -
Out of stock
Prox - 35.2418 - Top End Gasket Set - Yamaha
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$69.95Prox - 09345708 - Top End Gasket Set - YamahaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type4-StrokeRiding StyleOff-RoadProduct...$69.95 -
Prox - 35.2320 - Top End Gasket Set - Yamaha
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$30.95Prox - 09345703 - Top End Gasket Set - YamahaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsRiding StyleOff-RoadEngine Type2-StrokeProduct...$30.95 -
Prox - 35.2201 - Top End Gasket Set - Yamaha TT-R 125 - Fits 2000-2023 Yamaha TT-R125
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$51.95Prox - 09345687 - Top End Gasket Set - Yamaha TT-R 125FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsTypeTop EndProduct NameGasket...$51.95 -
Prox - 35.2225 - Top End Gasket Set - Fits 2005-2021 Yamaha YZ125
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$30.95Prox - 09345696 - Top End Gasket Set - YamahaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsProduct NameGasket SetUnitsSetRiding...$30.95 -
Out of stock
Prox - 35.2113 - Top End Gasket Set - Yamaha YZ 80 - Fits 1993-2001 Yamaha YZ80
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$22.95Prox - 09345685 - Top End Gasket Set - Yamaha YZ 80FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsRiding StyleOff-RoadEngine...$22.95 -
Prox - 35.1409 - Top End Gasket Set - Honda CR500R - Fits 1989-2001 Honda CR500R
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$41.95Prox - 09345681 - Top End Gasket Set - Honda CR500RFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type2-StrokeProduct NameGasket...$41.95 -
Prox - 35.1334 - Top End Gasket Set - Fits Honda 2004-2007 CRF250R, 2004-2017 CRF250X
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$88.95Prox - 09345672 - Top End Gasket Set - HondaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsRiding StyleOff-RoadUnitsSetEngine...$88.95 -
Out of stock
Prox - 35.7334 - Top End Gasket Set - Fits 2014-2018 Sherco SE/SE-R 300
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$54.95Prox - 09347152 - Top End Gasket Set - ShercoFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetEngine Type2-StrokeProduct NameGasket...$54.95 -
Out of stock
Prox - 35.6319 - Top End Gasket Set - Husqvarna/Gas Gas/KTM - Fits 2021-2023 Gas Gas EX/MC 350F, 2019-2022 Husqvarna FC/FX 350, 2019-2022 KTM 350 SX-F/XC-F
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$89.95Prox - 09347151 - Top End Gasket Set - Husqvarna/Gas Gas/KTMFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type4-StrokeRiding...$89.95 -
Prox - 35.6316 - Top End Gasket Set - Husqvarna/Gas Gas/KTM - Multiple Gas Gas/Husqvarna/KTM Models
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$88.95Prox - 09347149 - Top End Gasket Set - Husqvarna/Gas Gas/KTMFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetRiding StyleOff-RoadRiding...$88.95 -
Prox - 35.6216 - Top End Gasket Set - Husqvarna/Gas Gas/KTM - Fits 2021-2023 Gas Gas MC 125, 2016-2022 Husqvarna TC 125, 2017-2019 Husqvarna TX 125, 2018-2023 Husqvarna TE 150, 2016-2022 KTM 125/150 SX
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$72.95Prox - 09347147 - Top End Gasket Set - Husqvarna/Gas Gas/KTMFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetEngine Type2-StrokeProduct...$72.95 -
Out of stock
Prox - 57.3122 - Water Pump Rebuild Kit - Fits 2002-2023 Suzuki RM85
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$34.95Prox - 09347026 - Water Pump Rebuild Kit - SuzukiFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsProduct NameRepair KitRiding StyleOff-RoadTypeWater PumpEngine...$34.95 -
Out of stock
Prox - 35.4426 - Top End Gasket Set - Kawasaki KX 450 F - Fits 2016-2018 Kawasaki KX450F
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$94.95Prox - 09347139 - Top End Gasket Set - Kawasaki KX 450 FFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsTypeTop EndUnitsSetProduct NameGasket...$94.95 -
Out of stock
Prox - 35.4317 - Top End Gasket Set - Kawasaki KX 250 F - Fits 2017-2018 Kawasaki KX250F
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$79.95Prox - 09347138 - Top End Gasket Set - Kawasaki KX 250 FFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type4-StrokeRiding...$79.95 -
Prox - 57.3111 - Water Pump Rebuild Kit - Fits 1991-2001 Suzuki RM80
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$34.95Prox - 09347025 - Water Pump Rebuild Kit - SuzukiFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsEngine Type2-StrokeUnitsKitRiding StyleOff-RoadProduct NameRepair...$34.95 -
Prox - 57.2423 - Water Pump Rebuild Kit - Fits Yamaha 2003-2006 WR450F, 2005 YZ450F 03
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$36.95Prox - 09347014 - Water Pump Rebuild Kit - YamahaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsUnitsKitEngine Type4-StrokeRiding StyleOff-RoadProduct NameRepair...$36.95 -
Prox - 57.2424 - Water Pump Rebuild Kit - Fits 2014-2017 Yamaha YZ450F
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$36.95Prox - 09347015 - Water Pump Rebuild Kit - YamahaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsRiding StyleOff-RoadProduct NameRepair KitUnitsKitEngine...$36.95 -
Prox - 57.3023 - Water Pump Rebuild Kit - Kawasaki/Suzuki
Prox
MSRP: $44.95$43.74Prox - 09347024 - Water Pump Rebuild Kit - Kawasaki/SuzukiFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsProduct NameRepair KitTypeWater PumpRiding...MSRP: $44.95$43.74 -
Out of stock
Prox - 57.1515 - Water Pump Rebuild Kit - Fits 1985-2001 Honda CR500R
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$39.95Prox - 09347000 - Water Pump Rebuild Kit - HondaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsEngine Type2-StrokeTypeWater PumpProduct NameRepair...$39.95 -
Prox - 57.2122 - Water Pump Rebuild Kit - Fits 2002-2016 Yamaha YZ85
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$36.95Prox - 09347005 - Water Pump Rebuild Kit - YamahaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsProduct NameRepair KitUnitsKitEngine Type2-StrokeRiding...$36.95 -
Prox - 57.1319 - Water Pump Rebuild Kit - Fits 1992-2001 Honda CR250R
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$41.95Prox - 09346989 - Water Pump Rebuild Kit - HondaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsRiding StyleOff-RoadProduct NameRepair KitEngine...$41.95 -
Out of stock
Prox - 57.1015 - Water Pump Rebuild Kit - Fits Honda 1985-2002 CR80R, 2003-2007 CR85R
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$54.95Prox - 09346984 - Water Pump Rebuild Kit - HondaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsRiding StyleOff-RoadTypeWater PumpEngine Type2-StrokeUnitsKitProduct...$54.95 -
Prox - 57.1227 - Water Pump Rebuild Kit - Fits 2007-2026 Honda CRF150R
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$36.95Prox - 09346987 - Water Pump Rebuild Kit - HondaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsUnitsKitRiding StyleOff-RoadEngine Type4-StrokeProduct NameRepair...$36.95 -
Out of stock
Prox - 57.1322 - Water Pump Rebuild Kit - Fits 2002-2007 Honda CR250R
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$36.95Prox - 09346991 - Water Pump Rebuild Kit - HondaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsEngine Type2-StrokeTypeWater PumpUnitsKitProduct NameRepair...$36.95 -
Prox - 57.1422 - Water Pump Rebuild Kit - Fits 2002-2008 Honda CRF450R
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$36.95Prox - 09346993 - Water Pump Rebuild Kit - HondaFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsRiding StyleOff-RoadProduct NameRepair KitTypeWater...$36.95 -
Out of stock
Prox - 35.1236 - Top End Gasket Set - Honda CRF150F - Fits 2006-2017 Honda CRF150F
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$44.95Prox - 09345664 - Top End Gasket Set - Honda CRF150FFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsProduct NameGasket SetTypeTop...$44.95 -
Out of stock
Prox - 35.1322 - Top End Gasket Set - Honda CR250R
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$39.95Prox - 09345669 - Top End Gasket Set - Honda CR250RFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type2-StrokeTypeTop EndProduct...$39.95 -
Out of stock
Prox - 35.1220 - Top End Gasket Set - Fits 2000-2002 Honda CR125R
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$39.95Prox - 09345658 - Top End Gasket Set - HondaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetEngine Type2-StrokeProduct NameGasket...$39.95
ProX Racing Performance Engine Systems – Pistons, Crankshafts & Complete Rebuild Components
ProX is a leading manufacturer of high-performance motorcycle engine components, offering a comprehensive range of parts engineered to meet or exceed OEM specifications. Their extensive lineup includes piston kits, ring sets, connecting rod kits and crankshaft bearing kits designed for precision fitment and long-lasting durability. Built for motocross, enduro and off-road applications, ProX components are manufactured using advanced materials and strict quality control standards to ensure consistent performance under extreme riding conditions. These motorcycle engine rebuild parts are trusted by riders and mechanics worldwide for restoring power, improving reliability and maintaining peak engine efficiency.
Beyond internal engine components, ProX provides a wide selection of gasket kits, top end gasket sets and water pump rebuild kits that support complete engine overhauls and routine maintenance. Their gasket solutions are designed to deliver proper sealing and leak prevention across high-temperature engine environments, while water pump kits ensure optimal cooling system performance. In addition, ProX offers valve and spring kits, cam chains and valve shims, enabling precise engine tuning and valve train reliability. These components are essential for maintaining engine timing, compression and overall performance in demanding off-road and racing conditions.
ProX also supports chassis and braking system maintenance with products like wheel spacer kits, brake caliper rebuild kits and master cylinder rebuild kits, ensuring complete mechanical reliability beyond the engine. Their clutch components, including clutch plate sets and inner clutch hubs, are engineered to handle high torque loads while maintaining smooth engagement and durability. Whether performing a full engine rebuild or upgrading specific components, ProX delivers a complete solution for riders seeking motorcycle performance parts, engine rebuild kits and off-road racing components that enhance durability, precision and long-term performance.