PROX
Prox Pistons, Gaskets, and Engine Components at JJ Motorsports
Prox, established in the late 1970s, is a respected brand in the powersports industry, specializing in high-performance aftermarket parts for motorcycles, ATVs, and off-road vehicles. With a focus on quality and innovation, Prox offers OEM-style replacements that deliver exceptional reliability and performance for both recreational riders and professionals.
At JJ Motorsports, we provide a comprehensive selection of Prox products, including complete gasket kits, top-end gasket sets, piston kits, connecting rod kits, crankshaft bearing/seal kits, and more. Whether you're rebuilding an engine or upgrading for better durability, Prox delivers precise-fit solutions compatible with major brands like Honda, Kawasaki, Suzuki, and KTM. Explore our inventory to find the ideal parts for your vehicle.
Key features of Prox products include precision engineering to OEM specifications, use of high-silicon-content aluminum alloys for pistons, double-forged construction for strength, and complete kits for easy installation. Shop now and enhance your powersports performance with Prox!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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PROX Water Pump Rebuild Kit - KTM 57.6218
PROX
$46.95A failing water pump doesn't just compromise cooling efficiency—it puts your engine at serious risk of overheating and catastrophic damage. The PROX Water Pump Rebuild Kit for KTM gives you...09347070- SKU:
- 09347070
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$46.95 -
PROX Water Pump Rebuild Kit 57.6314
PROX
$62.95A failing water pump can compromise engine cooling efficiency and lead to catastrophic overheating—especially critical under racing conditions or sustained high-performance driving. The PROX Water...09347071- SKU:
- 09347071
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
PROX Water Pump Rebuild Kit 57.6322
PROX
$36.95A failing water pump doesn't just compromise cooling efficiency—it risks catastrophic engine damage and costly downtime. The PROX Water Pump Rebuild Kit 57.6322 gives you a straightforward,...09347075- SKU:
- 09347075
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
- PRODUCT NAME:
- REPAIR KIT
$36.95 -
PROX Water Pump Rebuild Kit 57.6429
PROX
$49.95A failing water pump compromises cooling efficiency and risks catastrophic engine damage—especially critical in high-performance applications where heat management directly impacts reliability and...09347081- SKU:
- 09347081
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
- PRODUCT NAME:
- REPAIR KIT
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
PROX Water Pump Rebuild Kit 57.6528
PROX
$39.95A failing water pump compromises engine cooling efficiency and invites catastrophic overheating—especially under sustained racing conditions or heavy load. The PROX Water Pump Rebuild Kit 57.6528...09347083- SKU:
- 09347083
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$39.95 -
PROX Water Pump Rebuild Kit 57.7414
PROX
$84.95A failing water pump compromises cooling system efficiency and puts your engine at risk of overheating during high-performance operation. The PROX Water Pump Rebuild Kit 57.7414 delivers OEM-quality...09347084- SKU:
- 09347084
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$84.95 -
PROX Water Pump Rebuild Kit 57.7421
PROX
$83.95A failing water pump can compromise your entire cooling system, leading to catastrophic engine damage and costly downtime. The PROX Water Pump Rebuild Kit 57.7421 gives you a straightforward way to...09347085- SKU:
- 09347085
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$83.95 -
PROX Water Pump Rebuild Kit 57.7521
PROX
$78.02A failing water pump doesn't just compromise cooling efficiency—it risks catastrophic engine damage that sidelines your vehicle and drains your wallet. The PROX Water Pump Rebuild Kit 57.7521 gives...09347086- SKU:
- 09347086
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$78.02 -
PROX Water Pump Rebuild Kit 57.7528
PROX
$31.95A failing water pump compromises cooling system integrity and risks catastrophic engine damage—this rebuild kit delivers OEM-equivalent performance at a fraction of replacement cost. PROX's...09347089- SKU:
- 09347089
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$31.95 -
PROX Water Pump Rebuild Kit 57.7625
PROX
$104.95A failing water pump can sideline your engine and compromise cooling system integrity, leading to catastrophic overheating during critical race conditions or extended driving sessions. This PROX...09347091- SKU:
- 09347091
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- ATV
$104.95 -
PROX Water Pump Rebuild Kit 57.7724
PROX
$105.95A failing water pump compromises your engine's cooling system and puts your build at risk during critical races or demanding track sessions. The PROX Water Pump Rebuild Kit 57.7724 gives you...09347092- SKU:
- 09347092
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- ATV
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$105.95 -
PROX Water Pump Rebuild Kit 57.7821
PROX
$79.95A failing water pump compromises cooling system efficiency and risks catastrophic engine damage—especially under sustained track conditions or high-performance driving. The PROX Water Pump Rebuild...09347093- SKU:
- 09347093
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- ATV
$79.95Qty in Cart: 0Quantity:Price:$79.95Subtotal: -
PROX Water Pump Rebuild Kit 57.7824
PROX
$143.05Your water pump is the circulatory system of your engine—when it fails, catastrophic overheating follows. The PROX Water Pump Rebuild Kit 57.7824 gives you OEM-quality replacement components at a...09347094- SKU:
- 09347094
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$143.05 -
PROX Gasket Kit - Complete 34.1494
PROX
$193.95A complete gasket kit is essential for any engine rebuild or major service—it ensures proper sealing across all critical interfaces and prevents costly oil leaks, coolant weeps, and combustion gas...09347096- SKU:
- 09347096
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
$193.95 -
PROX Gasket Kit - Complete 34.1496
PROX
$262.95A complete gasket kit is the foundation of a reliable engine assembly—worn or mismatched gaskets lead to fluid leaks, combustion blow-by, and catastrophic engine failure. The PROX Gasket Kit 34.1496...09347097- SKU:
- 09347097
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- ENGINE TYPE:
- 4-STROKE
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$262.95 -
PROX Gasket Kit - Complete 34.2021
PROX
$105.95A complete gasket kit is essential for any engine rebuild or top-end overhaul—it ensures a perfect seal across all critical junctures and prevents oil leaks, coolant weeping, and combustion blow-by...09347098- SKU:
- 09347098
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
$105.95Qty in Cart: 0Quantity:Price:$105.95Subtotal: -
PROX Gasket Kit - Complete 34.2280
PROX
$78.95A complete gasket kit is essential for any engine rebuild or major service to ensure proper sealing across all critical surfaces. PROX's complete gasket set eliminates the guesswork of sourcing...09347099- SKU:
- 09347099
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
$78.95 -
PROX Gasket Kit - Complete - Yamaha 34.2434
PROX
$147.95A complete gasket kit is essential for any engine rebuild or top-end service—it ensures a reliable seal across all critical engine interfaces and eliminates the risk of oil or coolant leaks that can...09347100- SKU:
- 09347100
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$147.95 -
PROX Gasket Kit - Complete - Yamaha 34.2439
PROX
$172.95A complete gasket kit is essential for any engine rebuild or top-end overhaul—it ensures proper sealing across all critical surfaces and prevents oil leaks, coolant seepage, and combustion gas escape...09347101- SKU:
- 09347101
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- UNITS:
- KIT
$172.95 -
PROX Gasket Kit - Complete 34.3180
PROX
$69.95A complete gasket kit is essential for any engine rebuild or overhaul—sealing failures lead to oil leaks, coolant loss, and compromised performance. The PROX 34.3180 delivers factory-spec sealing...09347102- SKU:
- 09347102
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$69.95 -
PROX Gasket Kit - Complete - Kawasaki 34.3423
PROX
$172.95A complete gasket kit is essential for any engine rebuild or major service—it ensures a proper seal across all critical engine surfaces and prevents oil leaks that compromise performance and...09347103- SKU:
- 09347103
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$172.95 -
PROX Gasket Kit - Complete 34.3426
PROX
$214.95A complete gasket kit is essential for any engine rebuild or overhaul—it ensures a proper seal across all critical engine surfaces, preventing oil leaks, coolant seepage, and combustion blowby that...09347104- SKU:
- 09347104
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- UNITS:
- KIT
$214.95 -
PROX Gasket Kit - Complete 34.6316
PROX
$130.95A complete gasket kit is essential maintenance for any serious engine build or rebuild—proper sealing prevents oil leaks, coolant seepage, and combustion chamber bypass that compromise performance...09347105- SKU:
- 09347105
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
$130.95Qty in Cart: 0Quantity:Price:$130.95Subtotal: -
PROX Top End Gasket Set - Honda 35.1417
PROX
$84.95A worn or damaged top end gasket set compromises cylinder head seal integrity, leading to coolant leaks, oil seepage, and potential combustion gas blow-by. The PROX Top End Gasket Set for Honda...09347110- SKU:
- 09347110
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$84.95 -
PROX Top End Gasket Set - Honda 35.1494
PROX
$88.95A proper top-end gasket set is non-negotiable for maintaining compression integrity and preventing oil weeping between cylinder head and block surfaces. PROX's Honda-specific 35.1494 set delivers...09347113- SKU:
- 09347113
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET SET
$88.95 -
PROX Top End Gasket Kit - TRX450ER 35.1496
PROX
$109.95A failing top end gasket kit compromises combustion seal integrity, leading to power loss, oil seepage, and accelerated wear on critical engine components. The PROX Top End Gasket Kit for your...09347114- SKU:
- 09347114
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$109.95 -
PROX Top End Gasket Set - Honda 35.1613
PROX
$67.95A properly sealed top end is non-negotiable for engine reliability and performance consistency. The PROX Top End Gasket Set (35.1613) delivers OEM-grade sealing for Honda applications, preventing...09347117- SKU:
- 09347117
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$67.95 -
PROX Top End Gasket Set - Yamaha 35.2005
PROX
$22.95A properly sealed top end is non-negotiable for engine reliability and performance. The PROX Top End Gasket Set ensures a leak-free seal between critical engine components, preventing oil seepage and...09347119- SKU:
- 09347119
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$22.95 -
PROX Top End Gasket Set - Yamaha 35.2008
PROX
$25.95A failing top-end gasket set compromises compression, invites oil leaks, and tanks your engine's reliability—exactly what you can't afford mid-race or mid-season. The PROX Top End Gasket Set for...09347120- SKU:
- 09347120
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$25.95 -
PROX Top End Gasket Set - Yamaha 35.2129
PROX
$36.95A quality top-end gasket set is non-negotiable for maintaining compression integrity and preventing oil seepage in high-rev applications. Whether you're rebuilding after extended use or preparing for...09347123- SKU:
- 09347123
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$36.95 -
PROX Top End Gasket Set - Yamaha 35.2280
PROX
$41.95A worn or failing top-end gasket set is one of the fastest ways to lose compression, invite oil seepage, and compromise engine reliability—especially in high-performance or race-prepped builds. The...09347125- SKU:
- 09347125
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
$41.95 -
PROX Top End Gasket Set - Yamaha 35.2358
PROX
$59.95A quality top-end gasket set is critical for maintaining compression and preventing oil seepage that can compromise engine performance and reliability. PROX gasket sets are precision-engineered to...09347126- SKU:
- 09347126
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$59.95 -
PROX Top End Gasket Set - Yamaha 35.2419
PROX
$78.95A quality top-end gasket set is non-negotiable for any engine rebuild or high-mileage refresh—it's your insurance policy against coolant leaks, oil seepage, and compression loss that compromise both...09347127- SKU:
- 09347127
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$78.95 -
PROX Top End Gasket Set - Yamaha 35.2424
PROX
$69.95A top-end gasket set is essential for maintaining reliable compression and preventing coolant or oil leaks in your engine's most critical sealing points. When you're rebuilding your Yamaha top end or...09347128- SKU:
- 09347128
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- SET
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
PROX Top End Gasket Set - Yamaha 35.2434
PROX
$67.95A quality top-end gasket set is non-negotiable for engine reliability—whether you're rebuilding after a full teardown or replacing a failed gasket on the track. The PROX 35.2434 provides complete...09347129- SKU:
- 09347129
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- SET
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET SET
$67.95 -
PROX Top End Gasket Set - Yamaha 35.2439
PROX
$72.95A worn or failed top end gasket set compromises compression, allows coolant and oil seepage, and undermines engine reliability during high-stress racing conditions. PROX's OEM-specification gasket...09347130- SKU:
- 09347130
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
$72.95 -
PROX Top End Gasket Set - Yamaha 35.2448
PROX
$72.95A top-end gasket set is essential for maintaining proper compression and preventing fluid leaks between cylinder head components—critical for consistent performance and reliability whether you're on...09347131- SKU:
- 09347131
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- TYPE:
- TOP END
$72.95 -
PROX Top End Gasket Set - Yamaha 35.2661
PROX
$99.95A top-end gasket set is critical to maintaining compression integrity and preventing oil seepage in high-stress engine environments. Whether you're rebuilding after a track session or performing...09347133- SKU:
- 09347133
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- RIDING STYLE:
- UTV
- UNITS:
- SET
$99.95 -
PROX Top End Gasket Set - Yamaha 35.2706
PROX
$105.95A quality top-end gasket set is essential for maintaining compression, preventing coolant and oil seepage, and ensuring reliable engine performance during high-demand riding. The PROX 35.2706...09347134- SKU:
- 09347134
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- SET
$105.95 -
PROX Top End Gasket Set - Suzuki 35.3001
PROX
$22.95A compromised top end gasket set forces you to choose between a leaking engine and expensive downtime—neither is acceptable when you're chasing performance. PROX's OEM-equivalent gasket set delivers...09347135- SKU:
- 09347135
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- SET
$22.95Qty in Cart: 0Quantity:Price:$22.95Subtotal:
