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!
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On Sale
PROX Engine Rebuild Kit 10.EK5805.C1
PROX
MSRP: $1,099.95Now: $732.00Was: $1,099.95PROX Engine Rebuild Kit09031698- SKU:
- 09031698
- Availability:
- Ships Same Business Day
- Weight:
- 25.86 LBS
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE METRIC:
- +0.02 MM
- UNITS:
- KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- UTV
MSRP: $1,099.95Now: $732.00Was: $1,099.95 -
PROX Top End Gasket Set - Yamaha 35.2214
PROX
$24.95PROX Top End Gasket Set - Yamaha09345693- SKU:
- 09345693
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
- TYPE:
- TOP END
$24.95 -
PROX Top End Gasket Set - Yamaha 35.2218
PROX
$24.95PROX Top End Gasket Set - Yamaha09345694- SKU:
- 09345694
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- UNITS:
- SET
$24.95 -
PROX Top End Gasket Set - Yamaha 35.2222
PROX
$24.95PROX Top End Gasket Set - Yamaha09345695- SKU:
- 09345695
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$24.95 -
PROX Top End Gasket Set - Yamaha 35.2225
PROX
$29.95PROX Top End Gasket Set - Yamaha09345696- SKU:
- 09345696
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
$29.95 -
PROX Top End Gasket Set - Yamaha 35.2319
PROX
$29.95PROX Top End Gasket Set - Yamaha09345702- SKU:
- 09345702
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$29.95 -
PROX Top End Gasket Set - Yamaha 35.2401
PROX
$59.95PROX Top End Gasket Set - Yamaha09345705- SKU:
- 09345705
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- TYPE:
- TOP END
$59.95 -
PROX Top End Gasket Set - Yamaha 35.2414
PROX
$54.95PROX Top End Gasket Set - Yamaha09345707- SKU:
- 09345707
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET SET
$54.95 -
PROX Top End Gasket Set - Yamaha 35.2426
PROX
$69.95PROX Top End Gasket Set - Yamaha09345711- SKU:
- 09345711
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$69.95 -
PROX Top End Gasket Set - Suzuki 35.3218
PROX
$24.95PROX Top End Gasket Set - Suzuki09345724- SKU:
- 09345724
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$24.95 -
PROX Top End Gasket Set - Suzuki 35.3224
PROX
$24.95PROX Top End Gasket Set - Suzuki09345725- SKU:
- 09345725
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$24.95 -
PROX Top End Gasket Set - Suzuki 35.3323
PROX
$39.95PROX Top End Gasket Set - Suzuki09345733- SKU:
- 09345733
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$39.95 -
PROX Top End Gasket Set - Suzuki 35.3405
PROX
$64.95PROX Top End Gasket Set - Suzuki09345740- SKU:
- 09345740
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$64.95 -
PROX Top End Gasket Set - Suzuki 35.3420
PROX
$54.95PROX Top End Gasket Set - Suzuki09345742- SKU:
- 09345742
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$54.95 -
PROX Top End Gasket Set - Kawasaki/Suzuki 35.4021
PROX
$29.95PROX Top End Gasket Set - Kawasaki/Suzuki09345743- SKU:
- 09345743
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$29.95 -
PROX Top End Gasket Set - Kawasaki/Suzuki 35.4100.90
PROX
$19.95PROX Top End Gasket Set - Kawasaki/Suzuki09345744- SKU:
- 09345744
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$19.95 -
PROX Top End Gasket Set - Kawasaki 35.4121
PROX
$24.95PROX Top End Gasket Set - Kawasaki09345748- SKU:
- 09345748
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- UNITS:
- SET
$24.95 -
PROX Top End Gasket Set - Kawasaki 35.4125
PROX
$34.95PROX Top End Gasket Set - Kawasaki09345750- SKU:
- 09345750
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$34.95 -
PROX Top End Gasket Set - Suzuki 35.4198
PROX
$34.95PROX Top End Gasket Set - Suzuki09345752- SKU:
- 09345752
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$34.95 -
PROX Top End Gasket Set - Kawasaki 35.4221
PROX
$44.95PROX Top End Gasket Set - Kawasaki09345757- SKU:
- 09345757
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
$44.95 -
PROX Top End Gasket Set - Kawasaki 35.4223
PROX
$44.95PROX Top End Gasket Set - Kawasaki09345758- SKU:
- 09345758
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$44.95 -
PROX Top End Gasket Set - Kawasaki 35.4313
PROX
$44.95PROX Top End Gasket Set - Kawasaki09345763- SKU:
- 09345763
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$44.95 -
PROX Top End Gasket Set - Kawasaki 35.4339
PROX
$84.95PROX Top End Gasket Set - Kawasaki09345767- SKU:
- 09345767
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- UNITS:
- SET
$84.95 -
PROX Top End Gasket Set - KTM 35.6011
PROX
$19.95PROX Top End Gasket Set - KTM09345772- SKU:
- 09345772
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$19.95 -
PROX Top End Gasket Set - KTM 35.6018
PROX
$29.95PROX Top End Gasket Set - KTM09345774- SKU:
- 09345774
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
$29.95 -
PROX Top End Gasket Set 35.6019
PROX
$29.95PROX Top End Gasket Set09345775- SKU:
- 09345775
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$29.95 -
PROX Top End Gasket Set - KTM/Husqvarna 35.6113
PROX
$29.95PROX Top End Gasket Set - KTM/Husqvarna09345777- SKU:
- 09345777
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$29.95 -
PROX Top End Gasket Set - KTM 35.6218
PROX
$29.95PROX Top End Gasket Set - KTM09345779- SKU:
- 09345779
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
$29.95 -
PROX Top End Gasket Set - KTM 35.6222
PROX
$29.95PROX Top End Gasket Set - KTM09345781- SKU:
- 09345781
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$29.95 -
PROX Top End Gasket Set 35.6227
PROX
$44.95PROX Top End Gasket Set09345782- SKU:
- 09345782
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- UNITS:
- SET
$44.95 -
PROX Top End Gasket Set - KTM 35.6326
PROX
$94.95PROX Top End Gasket Set - KTM09345789- SKU:
- 09345789
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
$94.95 -
PROX Top End Gasket Set - KTM 35.6340
PROX
$34.95PROX Top End Gasket Set - KTM09345792- SKU:
- 09345792
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
$34.95 -
PROX Top End Gasket Set 35.6348
PROX
$34.95PROX Top End Gasket Set09345796- SKU:
- 09345796
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
$34.95 -
PROX Top End Gasket Set - KTM/Husqvarna 35.6351
PROX
$79.95PROX Top End Gasket Set - KTM/Husqvarna09345797- SKU:
- 09345797
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
- RIDING STYLE:
- STREET
$79.95 -
PROX Top End Gasket Set - KTM 35.6420
PROX
$79.95PROX Top End Gasket Set - KTM09345798- SKU:
- 09345798
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
- RIDING STYLE:
- STREET
$79.95 -
PROX Top End Gasket Set - KTM 35.6438
PROX
$79.95PROX Top End Gasket Set - KTM09345801- SKU:
- 09345801
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- UNITS:
- SET
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- STREET
$79.95 -
PROX Top End Gasket Set - KTM 35.6520
PROX
$79.95PROX Top End Gasket Set - KTM09345803- SKU:
- 09345803
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$79.95 -
PROX Gasket Kit - Complete 34.6216
PROX
$119.95PROX Gasket Kit - Complete09346685- SKU:
- 09346685
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
$119.95 -
PROX Crank Seal Kit - CRF250R 42.1402
PROX
$19.95OEM quality, All seals necessary for complete crank rebuild included09350070- SKU:
- 09350070
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
$19.95 -
PROX Crank Seal Kit - YZ125 42.2225
PROX
$14.95OEM quality, All seals necessary for complete crank rebuild included09350071- SKU:
- 09350071
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- OIL
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
$14.95
