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 Top End Gasket Set - Yamaha 35.2423
PROX
$64.95PROX Top End Gasket Set - Yamaha09345710- SKU:
- 09345710
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$64.95 -
PROX Top End Gasket Set - Suzuki 35.3341
PROX
$69.95PROX Top End Gasket Set - Suzuki09345738- SKU:
- 09345738
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$69.95 -
PROX Crank Bearing and Seal Kit 23.CBS22005
PROX
$59.95Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240313- SKU:
- 09240313
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING AND SEAL KIT
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 2-STROKE
- TYPE:
- BALL
$59.95 -
PROX Crank Bearing and Seal Kit 23.CBS24001
PROX
$125.95Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240327- SKU:
- 09240327
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- STYLE:
- 4-STROKE
- TYPE:
- BALL
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING SET
- RIDING STYLE:
- STREET
$125.95 -
PROX Crank Bearing and Seal Kit 23.CBS41088
PROX
$33.95Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240349- SKU:
- 09240349
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- BEARING AND SEAL KIT
- TYPE:
- BALL
- STYLE:
- 2-STROKE
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$33.95 -
PROX Valve Shim Kit 29.VSA948
PROX
$109.95Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims09260941- SKU:
- 09260941
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- SHIM KIT
- TYPE:
- VALVE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- OUTSIDE DIAMETER METRIC:
- 9.48 MM
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 1.20 MM - 3.50 MM
$109.95 -
PROX Valve Shim Kit 29.VSA748
PROX
$109.95Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims09261018- SKU:
- 09261018
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM KIT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 1.20 MM - 3.50 MM
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
$109.95 -
PROX Valve and Spring Kit 28.SIS2424-2
PROX
$195.95Replaces the OEM valves and valve springs, Steel, nitrided valves for increased durability and less wear under extreme conditions, Stronger valve springs deal with the extra weight of the steel...09261024- SKU:
- 09261024
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$195.95 -
PROX Valve and Spring Kit 28.SIS6329-2
PROX
$149.95Replaces the OEM valves and valve springs, Steel, nitrided valves for increased durability and less wear under extreme conditions, Stronger valve springs deal with the extra weight of the steel...09261436- SKU:
- 09261436
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- VALVE
$149.95 -
PROX Valve and Spring Kit 28.SES4335-1
PROX
$149.95Replaces the OEM valves and valve springs, Steel, nitrided valves for increased durability and less wear under extreme conditions, Stronger valve springs deal with the extra weight of the steel...09261457- SKU:
- 09261457
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- SPRING KIT
- MATERIAL:
- STEEL
- APPLICATION:
- EXHAUST
- TYPE:
- VALVE
$149.95 -
PROX Valve and Spring Kit 28.SIS2402-2
PROX
$195.95Replaces the OEM valves and valve springs, Steel, nitrided valves for increased durability and less wear under extreme conditions, Stronger valve springs deal with the extra weight of the steel...09261460- SKU:
- 09261460
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- UNITS:
- KIT
$195.95 -
PROX Inner Clutch Hub 18.1290
PROX
$64.95Manufactured with OEM-specified aluminum, Precision cast and machined, Same as OEM replacement; fit both stock and aftermarket primary clutch baskets11320059- SKU:
- 11320059
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CLUTCH HUB
- TYPE:
- INNER
- UNITS:
- EACH
$64.95 -
PROX Inner Clutch Hub 18.1397
PROX
$79.95Manufactured with OEM-specified aluminum, Precision cast and machined, Same as OEM replacement; fit both stock and aftermarket primary clutch baskets11320061- SKU:
- 11320061
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- TYPE:
- INNER
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CLUTCH HUB
$79.95 -
PROX Clutch Inner Hub - TRX400 18.1499
PROX
$74.95The die-cast alloy parts are machined to OEM specifications and tolerance to be a direct and cost-efficient OEM replacement, The inner hubs can be used in combination with other ProX components or...11320065- SKU:
- 11320065
- Availability:
- Ships Same Business Day
- Weight:
- 0.97 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- UTV
- TYPE:
- INNER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- CLUTCH HUB
$74.95 -
PROX Fork Seal/Wiper Kit - 43 mm ID x 54 mm OD x 11 mm T 40.S435411
PROX
$49.95Genuine NOK replacement fork seals and wipers, Sold in sets of two fork seals and two wipers04070185- SKU:
- 04070185
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- FORK SEAL/WIPER
- THICKNESS IMPERIAL:
- 0.43'
- INSIDE DIAMETER:
- 43,00 MM (1,69')
- RIDING STYLE:
- OFF-ROAD
- THICKNESS:
- 11,00 MM (0,43')
- UNITS:
- KIT
- OUTSIDE DIAMETER:
- 54,00 MM (2,13')
$49.95 -
PROX Fork Seal/Wiper Kit - 43 mm ID x 52.9 mm OD x 9 mm T 40.S4352.99P
PROX
$39.95Genuine NOK replacement fork seals and wipers, Sold in sets of two fork seals and two wipers04070499- SKU:
- 04070499
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- INSIDE DIAMETER:
- 43,00 MM (1,69')
- THICKNESS:
- 9,00 MM (0,35')
- THICKNESS IMPERIAL:
- 0.35'
- OUTSIDE DIAMETER:
- 52,90 MM (2,08')
- PRODUCT NAME:
- FORK SEAL/WIPER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$39.95 -
PROX Gasket Kit with Oil Seals - Ski Doo 550 34.5503
PROX
$49.95PROX Gasket Kit with Oil Seals - Ski Doo 55009346593- SKU:
- 09346593
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- SNOW
- FEATURES:
- INCLUDES OIL SEAL
- UNITS:
- KIT
- TYPE:
- ENGINE
$49.95 -
PROX Gasket Kit with Oil Seals - Ski Doo 600 34.5600
PROX
$94.95PROX Gasket Kit with Oil Seals - Ski Doo 60009346595- SKU:
- 09346595
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- FEATURES:
- INCLUDES OIL SEAL
- UNITS:
- KIT
- RIDING STYLE:
- SNOW
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
$94.95 -
PROX Gasket Kit with Oil Seals - Polaris 800 34.5609
PROX
$104.95PROX Gasket Kit with Oil Seals - Polaris 80009346598- SKU:
- 09346598
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- SNOW
- FEATURES:
- INCLUDES OIL SEAL
- UNITS:
- KIT
- TYPE:
- ENGINE
$104.95 -
PROX Gasket Kit with Oil Seals - Ski Doo 600 ETEC 34.5613
PROX
$119.95PROX Gasket Kit with Oil Seals - Ski Doo 600 ETEC09346600- SKU:
- 09346600
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- RIDING STYLE:
- SNOW
- FEATURES:
- INCLUDES OIL SEAL
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$119.95 -
PROX Gasket Kit with Oil Seals - Ski Doo 800 34.5800
PROX
$114.95PROX Gasket Kit with Oil Seals - Ski Doo 80009346601- SKU:
- 09346601
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- SNOW
- TYPE:
- ENGINE
- FEATURES:
- INCLUDES OIL SEAL
- UNITS:
- KIT
$114.95 -
PROX Gasket Kit with Oil Seals - Polaris 800 34.5813
PROX
$119.95PROX Gasket Kit with Oil Seals - Polaris 80009346605- SKU:
- 09346605
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- UNITS:
- KIT
- FEATURES:
- INCLUDES OIL SEAL
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- SNOW
$119.95 -
PROX Gasket Kit with Oil Seals - Ski Doo 800 ETEC 34.5818
PROX
$134.95PROX Gasket Kit with Oil Seals - Ski Doo 800 ETEC09346606- SKU:
- 09346606
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- SNOW
- FEATURES:
- INCLUDES OIL SEAL
- UNITS:
- KIT
$134.95 -
PROX Top End Gasket Kit - Venture Phazer 35.2599
PROX
$29.95PROX Top End Gasket Kit - Venture Phazer09346610- SKU:
- 09346610
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- RIDING STYLE:
- SNOW
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- UNITS:
- SET
$29.95 -
PROX Top End Gasket Kit - Ski Doo 500 MXZ/LGD 35.5400
PROX
$49.95PROX Top End Gasket Kit - Ski Doo 500 MXZ/LGD09346613- SKU:
- 09346613
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- SNOW
- TYPE:
- TOP END
- UNITS:
- SET
$49.95 -
PROX Top End Gasket Kit - Ski Doo 500 35.5595
PROX
$29.95PROX Top End Gasket Kit - Ski Doo 50009346622- SKU:
- 09346622
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- SNOW
- TYPE:
- TOP END
- UNITS:
- SET
$29.95 -
PROX Top End Gasket Kit - Polaris 600 35.5604
PROX
$74.95PROX Top End Gasket Kit - Polaris 60009346629- SKU:
- 09346629
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- UNITS:
- SET
- RIDING STYLE:
- SNOW
$74.95 -
PROX Top End Gasket Kit - Ski Doo SM/MXZ 35.5800
PROX
$54.95PROX Top End Gasket Kit - Ski Doo SM/MXZ09346641- SKU:
- 09346641
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- SNOW
- PRODUCT NAME:
- GASKET KIT
$54.95 -
PROX Top End Gasket Kit - Ski Doo Summit/MXZ 800 35.5808
PROX
$79.95PROX Top End Gasket Kit - Ski Doo Summit/MXZ 80009346645- SKU:
- 09346645
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- SNOW
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
$79.95 -
PROX Top End Gasket Kit - Arctic Cat 800 35.5811
PROX
$84.95PROX Top End Gasket Kit - Arctic Cat 80009346647- SKU:
- 09346647
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- SNOW
- TYPE:
- TOP END
$84.95 -
PROX Top End Gasket Kit - Polaris 800 35.5813
PROX
$74.95PROX Top End Gasket Kit - Polaris 80009346649- SKU:
- 09346649
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- RIDING STYLE:
- SNOW
$74.95 -
PROX Top End Gasket Kit - Polaris 800 35.5817
PROX
$89.95PROX Top End Gasket Kit - Polaris 80009346650- SKU:
- 09346650
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- SNOW
$89.95 -
PROX Top End Gasket Kit - Ski Doo 800R ETEC 35.5818
PROX
$69.95PROX Top End Gasket Kit - Ski Doo 800R ETEC09346651- SKU:
- 09346651
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- SNOW
- TYPE:
- TOP END
$69.95 -
PROX Top End Gasket Kit - Ski Doo 1000 35.5905
PROX
$134.95PROX Top End Gasket Kit - Ski Doo 100009346655- SKU:
- 09346655
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- SNOW
- TYPE:
- TOP END
$134.95 -
PROX Upper Rod Bearing - 20 mm x 25 mm x 23.8 mm 21.2697
PROX
$10.99Piston rod-end needle cage bearing.09240249- SKU:
- 09240249
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- INSIDE DIAMETER:
- 20 MM
- INSIDE DIAMETER METRIC:
- 20 MM
- LENGTH METRIC:
- 23.8 MM
- OUTSIDE DIAMETER METRIC:
- 25 MM
- STYLE:
- 2-STROKE
- UNITS:
- EACH
- APPLICATION:
- CONNECTING ROD
- LENGTH:
- 23,8 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- SNOW
- OUTSIDE DIAMETER:
- 25 MM
$10.99 -
PROX Upper Rod Bearing - 20 mm x 24 mm x 22.8 mm 21.5503
PROX
$10.99Piston rod-end needle cage bearing.09240252- SKU:
- 09240252
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- SNOW
- INSIDE DIAMETER:
- 20 MM
- INSIDE DIAMETER METRIC:
- 20 MM
- LENGTH:
- 22,8 MM
- LENGTH METRIC:
- 22.8 MM
- OUTSIDE DIAMETER:
- 24 MM
- STYLE:
- 2-STROKE
- OUTSIDE DIAMETER METRIC:
- 24 MM
- APPLICATION:
- CONNECTING ROD
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
$10.99 -
PROX Upper Rod Bearing - 18 mm x 23 mm x 22.8 mm 21.5598
PROX
$10.99Piston rod-end needle cage bearing.09240253- SKU:
- 09240253
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- INSIDE DIAMETER:
- 18 MM
- INSIDE DIAMETER METRIC:
- 18 MM
- LENGTH:
- 23,8 MM
- OUTSIDE DIAMETER METRIC:
- 23 MM
- RIDING STYLE:
- SNOW
- LENGTH METRIC:
- 23.8 MM
- OUTSIDE DIAMETER:
- 23 MM
- APPLICATION:
- CONNECTING ROD
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- BEARING
- STYLE:
- 2-STROKE
- UNITS:
- EACH
$10.99 -
PROX Upper Rod Bearing - 20 mm x 25 mm x 22.8 mm 21.5700
PROX
$10.99Piston rod-end needle cage bearing.09240257- SKU:
- 09240257
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- LENGTH:
- 22,8 MM
- OUTSIDE DIAMETER:
- 25 MM
- OUTSIDE DIAMETER METRIC:
- 25 MM
- UNITS:
- EACH
- APPLICATION:
- CONNECTING ROD
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- SNOW
- INSIDE DIAMETER:
- 20 MM
- INSIDE DIAMETER METRIC:
- 20 MM
- LENGTH METRIC:
- 22.8 MM
- STYLE:
- 2-STROKE
$10.99 -
PROX Upper Rod Bearing - 21 mm x 27 mm x 24.8 mm 21.5808
PROX
$10.99Piston rod-end needle cage bearing.09240261- SKU:
- 09240261
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- APPLICATION:
- CONNECTING ROD
- INSIDE DIAMETER:
- 21 MM
- INSIDE DIAMETER METRIC:
- 21 MM
- OUTSIDE DIAMETER:
- 27 MM
- PRODUCT NAME:
- BEARING
- STYLE:
- 2-STROKE
- UNITS:
- EACH
- LENGTH:
- 24,8 MM
- OUTSIDE DIAMETER METRIC:
- 27 MM
- LENGTH METRIC:
- 24.8 MM
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- SNOW
$10.99 -
PROX Piston Kit - Arctic Cat 600 CTEC 01.5614.000
PROX
$105.95PROX Piston Kit - Arctic Cat 600 CTEC09106063- SKU:
- 09106063
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- BORE SIZE METRIC:
- 73.80 MM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- RIDING STYLE:
- SNOW
$105.95
