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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PROX Crankshaft Bearing/Seal Kit - Beta 23.CBS73022
PROX
$115.95Crankshaft Bearing/Seal Kit - Beta Manufactured at leading OEM factories, Made to exact OEM specifications, to ensure maximum quality and performance, Includes all necessary bearings/seals for a...09240712- SKU:
- 09240712
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$115.95 -
PROX Crankshaft Bearing/Seal Kit - Beta 23.CBS73050
PROX
$99.95Crankshaft Bearing/Seal Kit - Beta Manufactured at leading OEM factories, Made to exact OEM specifications, to ensure maximum quality and performance, Includes all necessary bearings/seals for a...09240713- SKU:
- 09240713
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
$99.95 -
PROX Water Pump Rebuild Kit - Honda 57.1417
PROX
$54.95Water Pump Rebuild Kit - 57.1417 High-quality materials ensure durability and reliability. Comprehensive repair kit includes all essential components. Includes gaskets, O-rings,...09347755- SKU:
- 09347755
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
$54.95 -
PROX Water Pump Rebuild Kit - Kawasaki 57.4327
PROX
$54.95Water Pump Rebuild Kit - 57.4327 High-quality materials for durability and reliability Complete kit includes gaskets, O-rings, bearings, and seals Designed specifically for Kawasaki...09347756- SKU:
- 09347756
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$54.95 -
PROX Water Pump Rebuild Kit - Husqvarna/KTM 57.6327
PROX
$44.95Water Pump Rebuild Kit - Husqvarna/KTM Constructed of high-quality materials, Repair kits include all necessary gaskets, O-rings, bearings and seals09347757- SKU:
- 09347757
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
$44.95 -
PROX Water Pump Rebuild Kit - KTM 57.6407
PROX
$39.95Water Pump Rebuild Kit - KTM Constructed of high-quality materials, Repair kits include all necessary gaskets, O-rings, bearings and seals09347758- SKU:
- 09347758
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
$39.95 -
PROX Water Pump Rebuild Kit - Husqvarna/KTM 57.6416
PROX
$64.95Water Pump Rebuild Kit - Husqvarna/KTM Constructed of high-quality materials, Repair kits include all necessary gaskets, O-rings, bearings and seals09347759- SKU:
- 09347759
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$64.95 -
PROX Top End Gasket Set - Honda 35.1352
PROX
$89.95Top End Gasket Set - Honda Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347760- SKU:
- 09347760
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$89.95 -
PROX Top End Gasket Set - Honda 35.1421
PROX
$89.95Top End Gasket Set - Honda Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347761- SKU:
- 09347761
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$89.95 -
PROX Top End Gasket Set - Honda 35.1423
PROX
$89.95Top End Gasket Set - 35.1423 Complete set for comprehensive top-end rebuilds Manufactured to ProX specifications for superior quality Ensures optimal sealing for enhanced engine...09347762- SKU:
- 09347762
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$89.95 -
PROX Top End Gasket Set - Yamaha 35.2232
PROX
$29.95Top End Gasket Set - 35.2232 Comprehensive set for complete top-end rebuilds Engineered to meet ProX specifications for optimal performance Manufactured from high-quality materials for...09347763- SKU:
- 09347763
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
$29.95 -
PROX Top End Gasket Set - Yamaha 35.2450
PROX
$69.95Top End Gasket Set - 35.245 Complete set for Yamaha top-end rebuilds Includes all necessary gaskets for a comprehensive overhaul Manufactured to ProX specifications for superior quality ...09347764- SKU:
- 09347764
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$69.95 -
PROX Top End Gasket Set - Yamaha 35.2453
PROX
$84.95Top End Gasket Set - Yamaha Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347765- SKU:
- 09347765
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$84.95 -
PROX Top End Gasket Set - Yamaha 35.2718
PROX
$114.95Top End Gasket Set - Yamaha Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347766- SKU:
- 09347766
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$114.95 -
PROX Top End Gasket Set - Suzuki 35.3349
PROX
$69.95Top End Gasket Set - Suzuki Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347767- SKU:
- 09347767
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$69.95 -
PROX Top End Gasket Set - Kawasaki 35.4350
PROX
$74.95Top End Gasket Set - Kawasaki Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347768- SKU:
- 09347768
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$74.95 -
PROX Top End Gasket Set - Kawasaki 35.4431
PROX
$94.95Top End Gasket Set - 35.4431 Complete gasket set for top-end rebuilds Precision-engineered to meet ProX specifications Manufactured using high-quality materials for durability ...09347770- SKU:
- 09347770
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$94.95 -
PROX Top End Gasket Set - Gas Gas/Husqvarna/KTM 35.6320
PROX
$54.95Top End Gasket Set - 35.632 Comprehensive gasket set for top-end rebuilds Compatible with Gas Gas, Husqvarna, and KTM models Manufactured to ProX specifications for superior quality ...09347771- SKU:
- 09347771
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
$54.95 -
PROX Top End Gasket Set - Husqvarna/KTM 35.6347
PROX
$54.95Top End Gasket Set - Husqvarna/KTM Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347773- SKU:
- 09347773
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
$54.95 -
PROX Top End Gasket Set - Gas Gas/Husqvarna/KTM 35.6350
PROX
$54.95Top End Gasket Set - 35.635 Complete set for top-end rebuilds on Gas Gas, Husqvarna, and KTM models Manufactured to ProX specifications for superior quality and performance Includes all...09347774- SKU:
- 09347774
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
$54.95 -
PROX Top End Gasket Set - Gas Gas/Husqvarna 35.6353
PROX
$54.95Top End Gasket Set - Gas Gas/Husqvarna Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347775- SKU:
- 09347775
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$54.95 -
PROX Top End Gasket Set - Gas Gas/Husqvarna/KTM 35.6419
PROX
$94.95Top End Gasket Set - Gas Gas/Husqvarna/KTM Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347776- SKU:
- 09347776
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
$94.95 -
PROX Top End Gasket Set - Beta 35.7218
PROX
$49.95Top End Gasket Set - 35.7218 Comprehensive set for complete top-end rebuilds. Manufactured to ProX specifications for optimal performance. Includes all necessary gaskets for a...09347778- SKU:
- 09347778
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$49.95 -
PROX Top End Gasket Set - Beta 35.7219
PROX
$49.95Top End Gasket Set - Beta Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347780- SKU:
- 09347780
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$49.95 -
PROX Top End Gasket Set - Beta 35.7220
PROX
$49.95Top End Gasket Set - Beta Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347781- SKU:
- 09347781
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$49.95 -
PROX Top End Gasket Set - Beta 35.7313
PROX
$59.95Top End Gasket Set - 35.7313 Complete gasket set for top-end engine rebuilds Manufactured to ProX specifications for superior quality Ensures optimal sealing for enhanced engine...09347782- SKU:
- 09347782
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$59.95 -
PROX Top End Gasket Set - Sherco 35.7314
PROX
$84.95Top End Gasket Set - 35.7314 Complete gasket set for top-end engine rebuilds Manufactured by leading factories to ProX specifications Ensures optimal sealing for enhanced engine...09347783- SKU:
- 09347783
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$84.95 -
PROX Top End Gasket Set - Beta 35.7322
PROX
$59.95Top End Gasket Set - Beta Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347784- SKU:
- 09347784
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
$59.95 -
PROX Top End Gasket Set - Sherco 35.7324
PROX
$94.95Top End Gasket Set - 35.7324 Comprehensive gasket set for top-end rebuilds Manufactured to ProX specifications for guaranteed quality Designed for perfect sealing to enhance engine...09347786- SKU:
- 09347786
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
$94.95 -
PROX Top End Gasket Set - Beta 35.7332
PROX
$59.95Top End Gasket Set - Beta Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347787- SKU:
- 09347787
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
$59.95 -
PROX Top End Gasket Set - Beta 35.7351
PROX
$124.95Top End Gasket Set - 35.7351 Comprehensive set for complete top-end rebuilds Manufactured to ProX specifications for superior quality Ensures optimal sealing and performance ...09347788- SKU:
- 09347788
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$124.95 -
PROX Top End Gasket Set - Beta 35.7360
PROX
$124.95Top End Gasket Set - 35.736 Comprehensive gasket set for top-end rebuilds Includes all necessary gaskets for a complete overhaul Manufactured to ProX specifications for superior quality ...09347789- SKU:
- 09347789
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$124.95 -
PROX Top End Gasket Set - Beta 35.7416
PROX
$124.95Top End Gasket Set - 35.7416 Complete set for top-end rebuilds, ensuring you have everything needed for a successful installation. Manufactured to ProX specifications, guaranteeing precision...09347790- SKU:
- 09347790
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$124.95 -
PROX Top End Gasket Set - Beta 35.7420
PROX
$124.95Top End Gasket Set - 35.742 Comprehensive gasket set for complete top-end rebuilds. Manufactured to ProX specifications for optimal performance. Ensures superior sealing to prevent leaks...09347791- SKU:
- 09347791
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$124.95 -
PROX Top End Gasket Set - Beta 35.7426
PROX
$124.95Top End Gasket Set - 35.7426 Complete gasket set designed for top-end rebuilds. Manufactured to ProX specifications for superior quality. Ensures optimal sealing performance for your...09347792- SKU:
- 09347792
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$124.95 -
PROX Top End Gasket Set - Beta 35.7430
PROX
$124.95Top End Gasket Set - 35.743 Comprehensive gasket set for top-end engine rebuilds Manufactured to ProX specifications for reliable performance Includes all necessary gaskets for a...09347793- SKU:
- 09347793
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$124.95 -
PROX Piston Kit - 78.97 mm - Honda CRF250R/CRF250RX 01.1350.A
PROX
$185.95Piston Kit - 78.97 mm - Honda CRF250R/CRF250RX Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings...09106779- SKU:
- 09106779
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
$185.95 -
PROX Piston Kit - 53.95 mm - Yamaha YZ125/YZ125X 01.2232.A
PROX
$105.95Piston Kit - 53.95 mm - Yamaha YZ125/YZ125X Manufactured in Japan and designed to be OEM replacement, Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then...09106780- SKU:
- 09106780
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$105.95 -
PROX Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX 01.2448.A
PROX
$195.95Piston Kit - 96.95 mm - 01.2448.A High-performance piston kit designed for Yamaha WR450F/YZ450F/YZ450FX. Precision machined using advanced CNC technology for optimal fit and performance. ...09106781- SKU:
- 09106781
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
$195.95 -
PROX Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX 01.2450.A
PROX
$214.95Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston...09106782- SKU:
- 09106782
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$214.95
