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
-
WSM Top End Kit - .5mm - Yamaha 54-546-22
WSM
$210.34A worn top end compromises compression, efficiency, and reliability—this complete WSM piston kit eliminates guesswork by delivering OEM-quality components engineered for Yamaha 4-stroke engines...09031433- SKU:
- 09031433
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- PRODUCT NAME:
- PISTON KIT
- OVERBORE METRIC:
- +0.50 MM
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$210.34 -
WSM Top End Kit - 1mm - Kawasaki 54-250-14
WSM
$125.25A worn or damaged top end compromises engine efficiency, reliability, and power output across the entire RPM range. The WSM Top End Kit delivers factory-spec precision components engineered to...09031375- SKU:
- 09031375
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- OVERBORE METRIC:
- +1.00 MM
- PRODUCT NAME:
- PISTON KIT
$125.25Qty in Cart: 0Quantity:Price:$125.25Subtotal: -
WSM Top End Kit - Standard - Kawasaki 54-252-10
WSM
$134.15A worn or damaged top end directly impacts engine performance, reliability, and fuel efficiency. The WSM Top End Kit delivers OEM-quality components engineered for Kawasaki 4-stroke engines,...09031376- SKU:
- 09031376
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- OVERBORE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
$134.15Qty in Cart: 0Quantity:Price:$134.15Subtotal: -
WSM Top End Kit - .25mm - Kawasaki 54-252-11
WSM
$125.25A complete top-end rebuild requires precision components that work in concert—and this WSM Top End Kit delivers exactly that. Whether you're restoring a tired engine or building for peak performance,...09031377- SKU:
- 09031377
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- OVERBORE METRIC:
- +0.25 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
$125.25Qty in Cart: 0Quantity:Price:$125.25Subtotal: -
WSM Top End Kit - .5mm - Kawasaki 54-255-12
WSM
$134.15A top-end rebuild demands precision components that restore your engine to factory performance standards or beyond. The WSM Top End Kit delivers a complete piston assembly solution, eliminating the...09031383- SKU:
- 09031383
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- OVERBORE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$134.15Qty in Cart: 0Quantity:Price:$134.15Subtotal: -
WSM Top End Kit - Standard - Kawasaki 54-250-10
WSM
$134.15A top-end rebuild is essential for restoring compression, sealing, and combustion efficiency in your 4-stroke engine—especially after high-mileage operation or performance tuning. This WSM Top End...09031371- SKU:
- 09031371
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- OVERBORE METRIC:
- STANDARD
$134.15 -
On Sale
Wiseco Engine Rebuild Kit for 2011-2016 Polaris Ranger 800 6x6 PWR223-800B
WISECO
MSRP: $1,399.95Now: $1,181.00Was: $1,399.95When your Polaris Ranger 800 6x6 engine shows signs of wear—increased blow-by, loss of compression, or metal in the oil—a full rebuild is the most cost-effective path back to reliability. The Wiseco...09031686- SKU:
- 09031686
- Availability:
- Ships Same Business Day
- Weight:
- 25.65 LBS
- TYPE:
- ENGINE
- BORE SIZE METRIC:
- STANDARD
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- UTV
- UNITS:
- KIT
MSRP: $1,399.95Now: $1,181.00Was: $1,399.95 -
Wrench Rabbit Engine Rebuild Kit for Honda TRX250X 2009-2019 WR00011
WRENCH RABBIT
$737.95When your Honda TRX250X shows signs of wear—rough idle, loss of compression, or coolant weeping—a complete engine rebuild restores it to factory specifications and reliability. The Wrench Rabbit...09031637- SKU:
- 09031637
- Availability:
- Ships Same Business Day
- Weight:
- 14.15 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$737.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2012-2013 Honda TRX420 Rancher WR00012
WRENCH RABBIT
$946.95When your Honda TRX420 Rancher shows signs of wear—hard starts, loss of power, or visible blow-by—a complete engine rebuild restores factory performance and reliability without the cost of...09031638- SKU:
- 09031638
- Availability:
- Ships Same Business Day
- Weight:
- 20.85 LBS
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$946.95 -
Wrench Rabbit Engine Rebuild Kit for Honda TRX500FE 2005-2009 WR00036
WRENCH RABBIT
$1,132.95When your Honda TRX500FE starts showing signs of wear—loss of compression, oil leaks, or rough idle—a full engine rebuild is the most cost-effective path to restoring reliability and performance. The...09031640- SKU:
- 09031640
- Availability:
- Ships Same Business Day
- Weight:
- 20.20 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$1,132.95Qty in Cart: 0Quantity:Price:$1,132.95Subtotal: -
Wrench Rabbit Complete Engine Rebuild Kit for 2005-2011 Honda TRX500FM WR00037
WRENCH RABBIT
$1,132.95When your Honda TRX500FM engine shows signs of wear—whether it's loss of compression, bearing knock, or diminished power output—a complete rebuild is often your most cost-effective path to...09031641- SKU:
- 09031641
- Availability:
- Ships Same Business Day
- Weight:
- 20.05 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$1,132.95 -
Wrench Rabbit Engine Rebuild Kit for 2016 Polaris RZR 900 WR00040
WRENCH RABBIT
$1,994.95When your Polaris RZR 900 has accumulated serious hours, an engine rebuild becomes inevitable—and the Wrench Rabbit Engine Rebuild Kit eliminates the guesswork by bundling every critical component...09031644- SKU:
- 09031644
- Availability:
- Ships Same Business Day
- Weight:
- 27.50 LBS
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$1,994.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2015 Polaris Ranger 900 XP WR00041
WRENCH RABBIT
$1,994.95When your Polaris Ranger 900 XP shows signs of wear—increased blow-by, loss of compression, or oil consumption—a complete engine rebuild restores factory performance and reliability without the cost...09031645- SKU:
- 09031645
- Availability:
- Ships Same Business Day
- Weight:
- 27.90 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- RIDING STYLE:
- UTV
$1,994.95Qty in Cart: 0Quantity:Price:$1,994.95Subtotal: -
Wrench Rabbit Complete Engine Rebuild Kit for 2009 Suzuki LT-R450 WR101-102
WRENCH RABBIT
$1,211.95The Wrench Rabbit Complete Engine Rebuild Kit for your 2009 Suzuki LT-R450 gives you everything needed to restore your engine to factory specifications or exceed them with precision components...09031049- SKU:
- 09031049
- Availability:
- Ships Same Business Day
- Weight:
- 16.85 LBS
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- ATV
- FEATURES:
- STANDARD COMPRESSION PISTON
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$1,211.95 -
WSM Top End Kit - .75mm - Honda 54-227-13
WSM
$157.44A worn top end compromises compression, power delivery, and fuel efficiency—leaving performance on the table. The WSM Top End Kit delivers a complete piston assembly with OEM-quality components,...09031349- SKU:
- 09031349
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- OVERBORE METRIC:
- +0.75 MM
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- PISTON KIT
$157.44Qty in Cart: 0Quantity:Price:$157.44Subtotal: -
WSM Top End Kit - .25mm - Honda 54-228-11
WSM
$169.48A top-end rebuild is critical for maintaining peak engine performance and extending your 4-stroke's service life. The WSM Top End Kit delivers OEM-quality pistons and precision-machined components...09031352- SKU:
- 09031352
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- UNITS:
- KIT
- OVERBORE METRIC:
- +0.25 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
$169.48Qty in Cart: 0Quantity:Price:$169.48Subtotal: -
WSM Top End Kit - .5mm - Honda 54-228-12
WSM
$177.95A worn or damaged top end directly compromises your engine's compression, power delivery, and reliability. The WSM Top End Kit gives you everything needed for a complete piston and gasket refresh,...09031353- SKU:
- 09031353
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- OVERBORE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$177.95Qty in Cart: 0Quantity:Price:$177.95Subtotal: -
WSM Top End Kit - .75mm - Honda 54-228-13
WSM
$177.95A seized or worn top end forces you to choose between costly machine shop delays or unreliable DIY guesswork. The WSM Top End Kit delivers everything needed for a complete, factory-correct rebuild in...09031354- SKU:
- 09031354
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- OVERBORE METRIC:
- +0.75 MM
- UNITS:
- KIT
$177.95Qty in Cart: 0Quantity:Price:$177.95Subtotal: -
WSM Top End Kit - Standard - Honda 54-229-10
WSM
$144.99A worn or damaged top end directly kills engine performance and reliability—this comprehensive piston kit restores your Honda's compression, combustion efficiency, and power delivery with...09031356- SKU:
- 09031356
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- PRODUCT NAME:
- PISTON KIT
- OVERBORE METRIC:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$144.99Qty in Cart: 0Quantity:Price:$144.99Subtotal: -
WSM Top End Kit - 1mm - Honda 54-226-14
WSM
$155.89A worn or damaged top end directly cuts into power output and reliability—rebuilding with quality components restores your engine's original performance envelope. The WSM Top End Kit delivers...09031345- SKU:
- 09031345
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- OVERBORE METRIC:
- +1.00 MM
- RIDING STYLE:
- ATV
$155.89
