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 - 09347133 - Top End Gasket Set - Fits Yamaha 2002-2008 YFM660F Grizzly, 2004-2007 YXR660 Rhino
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$99.95Prox - 09347133 - Top End Gasket Set - YamahaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetEngine Type4-StrokeRiding StyleUTVProduct...$99.95 -
Prox - 09347130 - Top End Gasket Set - Fits Yamaha 2009-2022 YFZ450R, 2010-2011 YFZ450X
Prox
$72.95Prox - 09347130 - Top End Gasket Set - YamahaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsProduct NameGasket SetRiding StyleATVTypeTop...$72.95 -
Prox - 09347129 - Top End Gasket Set - Yamaha YFZ 450 - Fits Yamaha 2004-2009 YFZ450, 2010-2013 YFZ450
Prox
$67.95Prox - 09347129 - Top End Gasket Set - Yamaha YFZ 450FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsRiding StyleATVTypeTop EndProduct...$67.95 -
Out of stock
Prox - 09347126 - Top End Gasket Set - Fits 2008-2010 Yamaha YFM250R Raptor
Prox
$62.95Prox - 09347126 - Top End Gasket Set - YamahaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetRiding StyleStreetEngine...$62.95 -
Prox - 09347125 - Top End Gasket Set - Yamaha Blaster 200 - Fits 1988-2006 Yamaha YFS200 Blaster
Prox
$41.95Prox - 09347125 - Top End Gasket Set - Yamaha Blaster 200FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type2-StrokeTypeTop EndProduct...$41.95 -
Prox - 09347124 - Top End Gasket Set - Fits Yamaha 2007-2014 YFM350F Grizzly, 2005-2013 YFM350R Raptor, 1995-2009 YFM350 Wolverine, 1987-2004 YFM350X Warrior
Prox
$46.95Prox - 09347124 - Top End Gasket Set - YamahaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsTypeTop EndEngine Type4-StrokeProduct NameGasket...$46.95 -
Prox - 09347122 - Top End Gasket Set - Yamaha Banshee 350 - Fits 1987-2006 Yamaha YFZ350 Banshee
Prox
$51.95Prox - 09347122 - Top End Gasket Set - Yamaha Banshee 350FeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsProduct NameGasket KitRiding...$51.95 -
Prox - 09347116 - Top End Gasket Set - Fits Honda 1999-2008 TRX400EX, 2009-2014 TRX400X
Prox
$41.95Prox - 09347116 - Top End Gasket Set - HondaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type4-StrokeUnitsSetProduct NameGasket...$41.95 -
Prox - 09347115 - Top End Gasket Set - Fits 1998-2004 Honda TRX450ES/S
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$67.95Prox - 09347115 - Top End Gasket Set - HondaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type4-StrokeRiding StyleATVTypeTop...$67.95 -
Prox - 09347114 - Top End Gasket Set - Fits Honda 2006-2009 TRX450R, 2006-2014 TRX450ER
Prox
$109.95Prox - 09347114 - Top End Gasket Set - HondaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsProduct NameGasket KitRiding StyleATVTypeTop...$109.95 -
Prox - 09347113 - Top End Gasket Set - Fits 2004-2005 Honda TRX450R
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$88.95Prox - 09347113 - Top End Gasket Set - HondaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsUnitsSetProduct NameGasket SetEngine...$88.95 -
Out of stock
Prox - 09347112 - Top End Gasket Set - Honda TRX350 Rancher TM - Fits 2000-2006 Honda TRX350 Rancher
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$64.95Prox - 09347112 - Top End Gasket Set - Honda TRX350 Rancher TMFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsProduct NameGasket KitRiding...$64.95 -
Prox - 09347109 - Top End Gasket Set - Fits Honda 1985-1986 ATC250R, 1986-1989 TRX250R
Prox
$41.95Prox - 09347109 - Top End Gasket Set - HondaFeaturesPrecision engineering and the use of first-class materials guarantee the quality you demandSpecsEngine Type2-StrokeProduct NameGasket...$41.95 -
Prox - 09347104 - Gasket Kit - Complete - Fits 2006-2008 Suzuki LT-R450
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$214.95Prox - 09347104 - Gasket Kit - Complete - SuzukiSpecsProduct NameGasket KitTypeCompleteUnitsKitEngine Type4-StrokeRiding StyleATVFitment2006-2008 Suzuki LT-R450 QuadRacer$214.95 -
Prox - 09347103 - Gasket Kit - Complete - Kawasaki/Suzuki - Fits 2003-2006 Kawasaki KFX400, 2003-2008 Suzuki LT-Z400 QuadSport
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$172.95Prox - 09347103 - Gasket Kit - Complete - Kawasaki/SuzukiSpecsProduct NameGasket KitUnitsKitEngine Type4-StrokeTypeCompleteRiding StyleATVFitment2003-2008 Suzuki LT-Z400 QuadSport Z2003-2006 Kawasaki...$172.95 -
Prox - 09347102 - Gasket Kit - Complete - Kawasaki/Suzuki - Fits 1987-2006 Suzuki LT80
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$69.95Prox - 09347102 - Gasket Kit - Complete - Kawasaki/SuzukiSpecsUnitsKitEngine Type2-StrokeTypeCompleteProduct NameGasket KitRiding StyleATVFitment2003-2006 Kawasaki KFX801987-2006 Suzuki LT80 QuadSport$69.95 -
Out of stock
Prox - 09347101 - Gasket Kit - Complete - Fits 2009-2022 Yamaha YFZ450R
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$172.95Prox - 09347101 - Gasket Kit - Complete - YamahaSpecsTypeCompleteProduct NameGasket KitRiding StyleATVUnitsKitEngine Type4-StrokeFitment2009-2025 Yamaha YFZ450R2010-2011 Yamaha YFZ450X$172.95 -
Prox - 09347100 - Gasket Kit - Complete - Fits 2004-2009 Yamaha YFZ450
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$147.95Prox - 09347100 - Gasket Kit - Complete - YamahaSpecsRiding StyleATVTypeCompleteEngine Type4-StrokeProduct NameGasket KitUnitsKitFitment2004-2013 Yamaha YFZ450$147.95 -
Out of stock
Prox - 09347099 - Gasket Kit - Complete - Fits 1988-2006 Yamaha YFS200 Blaster
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$78.95Prox - 09347099 - Gasket Kit - Complete - YamahaSpecsProduct NameGasket KitRiding StyleATVUnitsKitEngine Type2-StrokeTypeCompleteFitment1988-2006 Yamaha YFS200 Blaster$78.95 -
Prox - 09347098 - Gasket Kit - Complete - Fits 1987-2006 Yamaha YFZ350 Banshee
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$105.95Prox - 09347098 - Gasket Kit - Complete - YamahaSpecsTypeCompleteEngine Type2-StrokeUnitsKitProduct NameGasket KitRiding StyleATVFitment1987-2006 Yamaha YFZ350 Banshee$105.95 -
Prox - 09347097 - Gasket Kit - Complete - Fits 2006-2009 Honda TRX450R
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$262.95Prox - 09347097 - Gasket Kit - Complete - HondaSpecsEngine Type4-StrokeProduct NameGasket KitRiding StyleATVTypeCompleteUnitsKitFitment2006-2009, 2012-2014 Honda TRX450ER Electric Start2006-2009,...$262.95 -
Out of stock
Prox - 09347096 - Gasket Kit - Complete - Fits 2004-2005 Honda TRX450R
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$193.95Prox - 09347096 - Gasket Kit - Complete - HondaSpecsUnitsKitEngine Type4-StrokeRiding StyleATVTypeCompleteProduct NameGasket KitFitment2004-2005 Honda TRX450R2004 Honda TRX450R Sportrax$193.95 -
Prox - 09347094 - Water Pump Rebuild Kit - Polaris
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$143.05Prox - 09347094 - Water Pump Rebuild Kit - PolarisFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsUnitsKitEngine Type4-StrokeProduct NameRepair KitRiding...$143.05 -
Out of stock
Prox - 09347093 - Water Pump Rebuild Kit - Fits Polaris 2011-2014 Sportsman 800, 2011-2014 Ranger, 2011-2014 RZR 800
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$79.95Prox - 09347093 - Water Pump Rebuild Kit - PolarisFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsTypeWater PumpEngine Type4-StrokeRiding StyleATVProduct NameRepair...$79.95 -
Out of stock
Prox - 09347092 - Water Pump Rebuild Kit - Fits Polaris 2005-2010 Sportsman 800, 2005-2009 Ranger 700, 2004-2007 Sportsman 700, 2010 Ranger 800, 2008-2010 RZR 800
Prox
$105.95Prox - 09347092 - Water Pump Rebuild Kit - PolarisFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsProduct NameRepair KitUnitsKitRiding StyleUTVEngine...$105.95 -
Prox - 09347091 - Water Pump Rebuild Kit - Arctic Cat
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$104.95Prox - 09347091 - Water Pump Rebuild Kit - Arctic Cat Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Riding Style ATV Product Name Repair...$104.95 -
Out of stock
Prox - 09347090 - Water Pump Rebuild Kit - Fits Polaris 2003-2004 Sportsman 600, 2002-2003 Sportsman 700
Prox
$99.95Prox - 09347090 - Water Pump Rebuild Kit - Polaris Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Engine Type 4-Stroke Product...$99.95 -
Prox - 09347089 - Water Pump Rebuild Kit - Can-Am Outlander, Renegade, Commander & More
Prox
$31.95Prox - 09347089 - Water Pump Rebuild Kit - Can-Am Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Product Name Repair Kit Engine...$31.95 -
Prox - 09347086 - Water Pump Rebuild Kit - Polaris
Prox
MSRP: $79.95$78.02Prox - 09347086 - Water Pump Rebuild Kit - Polaris Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Units Kit Engine...MSRP: $79.95$78.02 -
Prox - 09347085 - Water Pump Rebuild Kit - Fits Polaris 2001-2014 Sportsman 400, 2006-2007 Sportsman 450, 1999-2013 Ranger 500, 1997-2012 Scrambler 500, 1996-2000 Sportsman 500
Prox
$83.95Prox - 09347085 - Water Pump Rebuild Kit - PolarisFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsEngine Type4-StrokeUnitsKitProduct NameRepair KitTypeWater...$83.95 -
Prox - 09347084 - Water Pump Rebuild Kit - Fits Polaris 1995-2002 Explorer 400, 1995-2002 Scrambler 400, 1994-1999 Sport 400, 1994-1997 Sportsman 400
Prox
$84.95Prox - 09347084 - Water Pump Rebuild Kit - Polaris Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Engine Type 2-Stroke Riding...$84.95 -
Out of stock
Prox - 09347059 - Water Pump Rebuild Kit - Fits 2004-2009 Kawasaki KFX450R
Prox
$34.95Prox - 09347059 - Water Pump Rebuild Kit - KawasakiFeaturesRepair kit includes all necessary gaskets, O-rings, bearings and sealsSpecsTypeWater PumpProduct NameRepair KitUnitsKitEngine...$34.95 -
Prox - 09347057 - Water Pump Rebuild Kit - Fits 1997-2002 Kawasaki KVF400 Prairie
Prox
$59.95Prox - 09347057 - Water Pump Rebuild Kit - Kawasaki Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Product Name Repair Kit Type Water...$59.95 -
Out of stock
Prox - 09347048 - Water Pump Rebuild Kit - Fits 1987-2004 Kawasaki KSF250 Mojave
Prox
$34.95Prox - 09347048 - Water Pump Rebuild Kit - Kawasaki Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Type Water Pump Product Name Repair...$34.95 -
Out of stock
Prox - 09347038 - Water Pump Rebuild Kit - Fits 2002-2007 Suzuki LT-A500F Vinson
Prox
$64.95Prox - 09347038 - Water Pump Rebuild Kit - Suzuki Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Units Kit Product Name Repair...$64.95 -
Out of stock
Prox - 09347036 - Water Pump Rebuild Kit - Suzuki
Prox
$54.95Prox - 09347036 - Water Pump Rebuild Kit - Suzuki Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Product Name Repair Kit Type Water...$54.95 -
Out of stock
Prox - 09347033 - Water Pump Rebuild Kit - Arctic Cat/Kawasaki/Suzuki - Fits 2003-2008 Suzuki LT-Z400
Prox
$105.95Prox - 09347033 - Water Pump Rebuild Kit - Arctic Cat/Kawasaki/Suzuki Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Engine...$105.95 -
Prox - 09347023 - Water Pump Rebuild Kit - Fits Yamaha 2009-2014 YFM550 Grizzly, 2007-2015 YFM700 Grizzly, 2008-2013 YXR700 Rhino
Prox
$67.95Prox - 09347023 - Water Pump Rebuild Kit - Yamaha Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Product Name Repair...$67.95 -
Prox - 09347022 - Water Pump Rebuild Kit - Fits 2006-2025 Yamaha YFM700 R Raptor
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$62.95Prox - 09347022 - Water Pump Rebuild Kit - Yamaha Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Engine...$62.95 -
Out of stock
Prox - 09347021 - Water Pump Rebuild Kit - Fits Yamaha 2002-2008 YFM660 Grizzly, 2004-2007 YXR660 Rhino
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$52.95Prox - 09347021 - Water Pump Rebuild Kit - Yamaha Features Repair kit includes all necessary gaskets, O-rings, bearings and seals Specs Product Name Repair Kit Engine...$52.95
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.