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
-
PROX PRO-X Crank Seal Kit 42.2319
PROX
$19.95OEM quality, All seals necessary for complete crank rebuild included094288- SKU:
- 094288
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$19.95 -
PROX PRO-X Crank Seal Kit 42.2321
PROX
$19.95OEM quality, All seals necessary for complete crank rebuild included094289- SKU:
- 094289
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$19.95 -
PROX PRO-X Crank Seal Kit 42.2221
PROX
$19.95OEM quality, All seals necessary for complete crank rebuild included094290- SKU:
- 094290
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$19.95 -
PROX PRO-X Crank Seal Kit 42.3316
PROX
$29.95OEM quality, All seals necessary for complete crank rebuild included094395- SKU:
- 094395
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$29.95 -
PROX PRO-X Crank Seal Kit 42.3219
PROX
$24.95OEM quality, All seals necessary for complete crank rebuild included094398- SKU:
- 094398
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$24.95 -
PROX PRO-X Crank Seal Kit 42.4105
PROX
$9.95OEM quality, All seals necessary for complete crank rebuild included094481- SKU:
- 094481
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$9.95 -
PROX PRO-X Crank Seal Kit 42.4208
PROX
$19.95OEM quality, All seals necessary for complete crank rebuild included094484- SKU:
- 094484
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$19.95 -
PROX PRO-X Crank Seal Kit 42.4288
PROX
$9.95OEM quality, All seals necessary for complete crank rebuild included094487- SKU:
- 094487
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$9.95 -
PROX PRO-X Crank Seal Kit 42.4300
PROX
$29.95OEM quality, All seals necessary for complete crank rebuild included094488- SKU:
- 094488
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$29.95 -
PROX PRO-X Crank Seal Kit 42.4403
PROX
$9.95OEM quality, All seals necessary for complete crank rebuild included094489- SKU:
- 094489
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$9.95 -
PROX PRO-X Crank Seal Kit 42.1103
PROX
$9.95OEM quality, All seals necessary for complete crank rebuild included094181- SKU:
- 094181
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$9.95 -
PROX PRO-X Crank Seal Kit 42.1206
PROX
$9.95OEM quality, All seals necessary for complete crank rebuild included094184- SKU:
- 094184
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$9.95 -
PROX PRO-X Crank Seal Kit 42.1312
PROX
$14.95OEM quality, All seals necessary for complete crank rebuild included094187- SKU:
- 094187
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$14.95 -
PROX Crank Seal Kit - CR250/500 42.1304
PROX
$9.95OEM quality, All seals necessary for complete crank rebuild included09350292- SKU:
- 09350292
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
$9.95 -
PROX Crank Seal Kit - CRF250R 42.1405
PROX
$19.95OEM quality, All seals necessary for complete crank rebuild included09350294- SKU:
- 09350294
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
- TYPE:
- OIL
$19.95 -
PROX Crank Seal Kit - RM250 42.3325
PROX
$29.95OEM quality, All seals necessary for complete crank rebuild included09350315- SKU:
- 09350315
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal: -
PROX Crank Seal Kit - KTM60/65SX 42.6017
PROX
$14.95OEM quality, All seals necessary for complete crank rebuild included09350319- SKU:
- 09350319
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- TYPE:
- OIL
- RIDING STYLE:
- OFF-ROAD
$14.95 -
PROX Crank Seal Kit - KTM65SX 42.6029
PROX
$19.95OEM quality, All seals necessary for complete crank rebuild included09350320- SKU:
- 09350320
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- TYPE:
- OIL
$19.95Qty in Cart: 0Quantity:Price:$19.95Subtotal: -
PROX Crank Seal Kit - KTM85SX 42.6103
PROX
$24.95OEM quality, All seals necessary for complete crank rebuild included09350321- SKU:
- 09350321
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
- TYPE:
- OIL
- APPLICATION:
- CRANKSHAFT
$24.95 -
PROX Crank Seal Kit 42.6218
PROX
$14.95OEM quality, All seals necessary for complete crank rebuild included09350322- SKU:
- 09350322
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
$14.95Qty in Cart: 0Quantity:Price:$14.95Subtotal: -
PROX Crank Seal Kit - KTM250/300 42.6320
PROX
$19.95OEM quality, All seals necessary for complete crank rebuild included09350323- SKU:
- 09350323
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
- TYPE:
- OIL
$19.95 -
PROX Gasket Kit - Complete - Honda 34.1115
PROX
$79.95PROX Gasket Kit - Complete - Honda09345517- SKU:
- 09345517
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$79.95 -
PROX Gasket Kit - Complete - Honda 34.1223
PROX
$104.95PROX Gasket Kit - Complete - Honda09345521- SKU:
- 09345521
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$104.95 -
PROX Gasket Kit - Complete - Honda 34.1227
PROX
$199.95PROX Gasket Kit - Complete - Honda09345523- SKU:
- 09345523
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
$199.95 -
PROX Gasket Kit - Complete - Honda 34.1312
PROX
$99.95PROX Gasket Kit - Complete - Honda09345524- SKU:
- 09345524
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$99.95Qty in Cart: 0Quantity:Price:$99.95Subtotal: -
PROX Gasket Kit - Complete - Honda 34.1409
PROX
$104.95PROX Gasket Kit - Complete - Honda09345534- SKU:
- 09345534
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
$104.95Qty in Cart: 0Quantity:Price:$104.95Subtotal: -
PROX Gasket Kit - Complete - Honda 34.1422
PROX
$214.95PROX Gasket Kit - Complete - Honda09345536- SKU:
- 09345536
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$214.95 -
PROX Gasket Kit - Complete - Yamaha 34.2218
PROX
$69.95PROX Gasket Kit - Complete - Yamaha09345546- SKU:
- 09345546
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
PROX Gasket Kit - Complete - Yamaha 34.2222
PROX
$74.95PROX Gasket Kit - Complete - Yamaha09345548- SKU:
- 09345548
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$74.95 -
PROX Gasket Kit - Complete - Yamaha 34.2225
PROX
$94.95PROX Gasket Kit - Complete - Yamaha09345549- SKU:
- 09345549
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$94.95 -
PROX Gasket Kit - Complete - Yamaha 34.2312
PROX
$74.95PROX Gasket Kit - Complete - Yamaha09345553- SKU:
- 09345553
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
$74.95 -
PROX Gasket Kit - Complete - Yamaha 34.2317
PROX
$74.95PROX Gasket Kit - Complete - Yamaha09345555- SKU:
- 09345555
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
$74.95 -
PROX Gasket Kit - Complete - Yamaha 34.2322
PROX
$79.95PROX Gasket Kit - Complete - Yamaha09345557- SKU:
- 09345557
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$79.95 -
PROX Gasket Kit - Complete - Yamaha 34.2401
PROX
$139.95PROX Gasket Kit - Complete - Yamaha09345558- SKU:
- 09345558
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$139.95 -
PROX Gasket Kit - Complete - Yamaha 34.2414
PROX
$104.95PROX Gasket Kit - Complete - Yamaha09345560- SKU:
- 09345560
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$104.95 -
PROX Gasket Kit - Complete - Yamaha 34.2418
PROX
$139.95PROX Gasket Kit - Complete - Yamaha09345561- SKU:
- 09345561
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- STREET
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$139.95 -
PROX Gasket Kit - Complete - Yamaha 34.2420
PROX
$139.95PROX Gasket Kit - Complete - Yamaha09345562- SKU:
- 09345562
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$139.95 -
PROX Gasket Kit - Complete - Yamaha 34.2426
PROX
$189.95PROX Gasket Kit - Complete - Yamaha09345565- SKU:
- 09345565
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
$189.95 -
PROX Gasket Kit - Complete - Suzuki 34.3218
PROX
$109.95PROX Gasket Kit - Complete - Suzuki09345571- SKU:
- 09345571
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$109.95 -
PROX Gasket Kit - Complete - Suzuki 34.3221
PROX
$109.95PROX Gasket Kit - Complete - Suzuki09345572- SKU:
- 09345572
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
$109.95
