ATV/UTV Engine Rebuild Kits
ATV/UTV Engine Rebuild Kits at JJ Motorsports
Revive your ATV/UTV with complete engine rebuild kits from JJ Motorsports, featuring everything you need for a full top-to-bottom refresh on Yamaha Blaster, Polaris, Arctic Cat, Kawasaki, and Suzuki models. These all-in-one kits include pistons, gaskets, bearings, seals, and more for fast, reliable rebuilds and maximum performance.
Shop Wrench Rabbit and Wiseco rebuild kits for race-proven quality. Explore related categories such as ATV/UTV engine for individual components, or ATV/UTV for cams and exhaust to finish your build and ride with total confidence across all conditions, from high-speed dunes to technical trails.
Top ATV/UTV Engine Rebuild Kits
- Wrench Rabbit Engine Kit Arctic Cat/Kawasaki/Suzuki WR101-061 – Complete rebuild kit with Vertex piston, gaskets, bearings, and seals; fits multiple 400-450cc models.
- Wiseco Engine Kit Blaster 1988-2006 PWR105-665 – Full kit for Yamaha Blaster; forged piston, gaskets, crank bearings, and seals for legendary 2-stroke power.
- Wrench Rabbit Engine Kit Polaris WR00054 – Vertex-based complete kit for Polaris 500/570; includes piston, bearings, gaskets, and seals.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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WSM Top End Kit - .25mm - Honda 200 54-222-11
WSM
$88.95Top-quality piston kit, Includes pistons, rings, pins, clips, needle bearings, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke models09031472- SKU:
- 09031472
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- PRODUCT NAME:
- PISTON KIT
- OVERBORE METRIC:
- +0.25 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$88.95 -
WSM Top End Kit - .5mm - Honda 200 54-222-12
WSM
$88.95Top-quality piston kit, Includes pistons, rings, pins, clips, needle bearings, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke models09031473- SKU:
- 09031473
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- OVERBORE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$88.95 -
WSM Top End Kit - .25mm - Honda 420 54-231-21
WSM
$182.35Top-quality piston kit, Includes pistons, rings, pins, clips, needle bearings, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke models09031480- SKU:
- 09031480
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- OVERBORE METRIC:
- +0.25 MM
- RIDING STYLE:
- ATV
$182.35 -
WSM Top End Kit - .5mm - Honda 420 54-231-22
WSM
$182.35Top-quality piston kit, Includes pistons, rings, pins, clips, needle bearings, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke models09031481- SKU:
- 09031481
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- OVERBORE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$182.35 -
PROX Engine Rebuild Kit 10.EK5806.A
PROX
$1,099.95PROX Engine Rebuild Kit09031687- SKU:
- 09031687
- Availability:
- Ships Same Business Day
- Weight:
- 25.50 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$1,099.95 -
On Sale
PROX Engine Rebuild Kit 10.EK5806.B
PROX
MSRP: $1,143.72Now: $732.00Was: $1,143.72PROX Engine Rebuild Kit09031688- SKU:
- 09031688
- Availability:
- Ships Same Business Day
- Weight:
- 25.55 LBS
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- +0.01 MM
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- ATV
MSRP: $1,143.72Now: $732.00Was: $1,143.72 -
PROX Engine Rebuild Kit 10.EK5806.A1
PROX
$1,099.95PROX Engine Rebuild Kit09031690- SKU:
- 09031690
- Availability:
- Ships Same Business Day
- Weight:
- 26.60 LBS
- BORE SIZE METRIC:
- STANDARD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- TYPE:
- ENGINE
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
$1,099.95 -
PROX Engine Rebuild Kit 10.EK5805.A1
PROX
$1,099.95PROX Engine Rebuild Kit09031696- SKU:
- 09031696
- Availability:
- Ships Same Business Day
- Weight:
- 25.60 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- BORE SIZE METRIC:
- STANDARD
- RIDING STYLE:
- UTV
$1,099.95 -
On Sale
PROX Engine Rebuild Kit 10.EK5806.C
PROX
MSRP: $1,143.72Now: $732.00Was: $1,143.72PROX Engine Rebuild Kit09031689- SKU:
- 09031689
- Availability:
- Ships Same Business Day
- Weight:
- 25.55 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- +0.02 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
MSRP: $1,143.72Now: $732.00Was: $1,143.72 -
On Sale
PROX Engine Rebuild Kit 10.EK5805.B1
PROX
MSRP: $1,143.72Now: $732.00Was: $1,143.72PROX Engine Rebuild Kit09031697- SKU:
- 09031697
- Availability:
- Ships Same Business Day
- Weight:
- 24.40 LBS
- BORE SIZE METRIC:
- +0.01 MM
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- UNITS:
- KIT
- RIDING STYLE:
- UTV
MSRP: $1,143.72Now: $732.00Was: $1,143.72 -
On Sale
PROX Engine Rebuild Kit 10.EK5805.C1
PROX
MSRP: $1,143.72Now: $732.00Was: $1,143.72PROX Engine Rebuild Kit09031698- SKU:
- 09031698
- Availability:
- Ships Same Business Day
- Weight:
- 25.85 LBS
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE METRIC:
- +0.02 MM
- UNITS:
- KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- UTV
MSRP: $1,143.72Now: $732.00Was: $1,143.72 -
Wiseco Engine Rebuild Kit 85mm 2005-2008 Honda TRX400EX Sportrax PWR131B-850
WISECO
$809.95Revitalize your engine with the WISECO Engine Rebuild Kit PWR131B-850, designed for both 4-stroke and 2-stroke applications. This comprehensive kit provides all essential components for a complete engine overhaul, ensuring optimal performance and...09031610- SKU:
- 09031610
- Availability:
- Ships Same Business Day
- Weight:
- 16.40 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- TYPE:
- ENGINE
- BORE SIZE METRIC:
- 85.00 MM
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- STANDARD
- UNITS:
- KIT
$809.95 -
Wiseco Engine Rebuild Kit Honda TRX400EX 2005-2008 PWR131B-880
WISECO
$839.95Revitalize your engine with the WISECO Engine Rebuild Kit PWR131B-880, designed for both performance and reliability. This comprehensive kit includes everything you need for a complete overhaul, ensuring optimal functionality and longevity of your engine...09031611- SKU:
- 09031611
- Availability:
- Ships Same Business Day
- Weight:
- 16.40 LBS
- BORE - OVERSIZE METRIC:
- +3.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- BORE SIZE METRIC:
- 88.00 MM
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- BORE - OVERSIZE:
- +3,00 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$839.95 -
Wiseco Engine Rebuild Kit Honda TRX400EX 1999-2004 PWR131A-860
WISECO
$819.95Revitalize your ATV with the WISECO Engine Kit, designed specifically for the 400EX models from 1999 to 2004. This comprehensive kit includes everything you need for a full engine rebuild, ensuring optimal performance and longevity. Crafted with...09031513- SKU:
- 09031513
- Availability:
- Ships Same Business Day
- Weight:
- 16.20 LBS
$819.95 -
Wiseco Engine Rebuild Kit Yamaha YFM350 Warrior 1987-2004 PWR137-835
WISECO
$754.95Revitalize your YFM350 engine with the WISECO Engine Kit, designed for a comprehensive rebuild. This all-inclusive kit features meticulously crafted components that ensure optimal performance and longevity, making it a perfect choice for enthusiasts and...09031522- SKU:
- 09031522
- Availability:
- Ships Same Business Day
- Weight:
- 15.10 LBS
$754.95 -
Wrench Rabbit Engine Rebuild Kit for Honda TRX 350 FE 2000-2006 WR00007
WRENCH RABBIT
$829.95Revitalize your engine with the WRENCH RABBIT WR00007 Engine Kit, designed for comprehensive performance restoration. This complete rebuild kit ensures your engine runs smoothly and efficiently, featuring high-quality components tailored for durability...09031633- SKU:
- 09031633
- Availability:
- Ships Same Business Day
- Weight:
- 17.25 LBS
- RIDING STYLE:
- UTV
- TYPE:
- ENGINE
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
$829.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2017 Polaris RZR 900 WR00009
WRENCH RABBIT
$1,846.95Revitalize your Polaris engine with the WRENCH RABBIT Engine Kit, designed for comprehensive performance enhancement and reliability. This all-in-one rebuild kit includes everything you need to restore your engine to peak condition, ensuring optimal...09031635- SKU:
- 09031635
- Availability:
- Ships Same Business Day
- Weight:
- 25.00 LBS
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$1,846.95 -
Wrench Rabbit Engine Rebuild Kit for Polaris RZR 900 2018-2019 WR00010
WRENCH RABBIT
$1,846.95Revitalize your Polaris engine with the WRENCH RABBIT Engine Kit. This comprehensive rebuild kit ensures optimal performance and longevity, featuring high-quality components designed for a perfect fit. Whether you're tackling routine maintenance or a...09031636- SKU:
- 09031636
- Availability:
- Ships Same Business Day
- Weight:
- 25.00 LBS
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- ATV
$1,846.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2015 Polaris RZR 900 WR00042
WRENCH RABBIT
$1,846.95Elevate your Polaris engine's performance with the WRENCH RABBIT Engine Kit WR00042. This comprehensive rebuild kit is designed to provide all the essential components for a complete engine overhaul, ensuring reliability and power for your ride. Each kit...09031646- SKU:
- 09031646
- Availability:
- Ships Same Business Day
- Weight:
- 27.90 LBS
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- UTV
$1,846.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Polaris ACE 900 XC 2018-2019 WR00043
WRENCH RABBIT
$1,846.95Revitalize your Polaris engine with the WRENCH RABBIT Engine Kit. This comprehensive rebuild kit is designed for optimal performance, ensuring that your engine runs smoothly and efficiently. With all the essential components included, you can tackle your...09031647- SKU:
- 09031647
- Availability:
- Ships Same Business Day
- Weight:
- 27.70 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- UTV
- UNITS:
- KIT
$1,846.95
