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
-
Wrench Rabbit Engine Rebuild Kit Yamaha YFS200 Blaster 1988-2006 WR101-203
WRENCH RABBIT
$788.95When your Yamaha YFS200 Blaster's engine shows signs of wear—loss of compression, increased blow-by, or worn bearings—a full rebuild is the most cost-effective path to restoring reliability and performance. The Wrench Rabbit WR101-203 eliminates...09031454- SKU:
- 09031454
- Availability:
- Ships Same Business Day
- Weight:
- 11.25 LBS
- FEATURES:
- KIT CONTAINS +2 MM PISTON KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$788.95 -
Wrench Rabbit Engine Rebuild Kit Yamaha YFZ350 Banshee 1987-2005 WR101-204
WRENCH RABBIT
$1,249.95Two-stroke engines demand precision rebuild components to maintain peak performance and reliability. The Wrench Rabbit WR101-204 kit consolidates every critical internal component—from pistons to bearings to gaskets—into a single, professionally-curated...09031455- SKU:
- 09031455
- Availability:
- Ships Same Business Day
- Weight:
- 20.25 LBS
- FEATURES:
- KIT CONTAINS +0.5 MM PISTON
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
$1,249.95 -
Wrench Rabbit Engine Rebuild Kit for Yamaha YFZ350 Banshee 1987-2006 WR101-205
WRENCH RABBIT
$1,249.95A complete engine rebuild demands precision components that work together seamlessly—this Wrench Rabbit kit eliminates the guesswork by bundling everything you need to restore your YFZ350 Banshee to factory specifications or beyond. Whether you're...09031456- SKU:
- 09031456
- Availability:
- Ships Same Business Day
- Weight:
- 20.10 LBS
- FEATURES:
- KIT CONTAINS +1 MM PISTON
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- UNITS:
- KIT
- RIDING STYLE:
- ATV
$1,249.95 -
Wrench Rabbit Engine Rebuild Kit for 2005-2007 Honda CR250R WR101-206
WRENCH RABBIT
$1,249.95A two-stroke engine rebuild demands precision components and complete coverage—this kit delivers both. The Wrench Rabbit WR101-206 bundles OEM-quality pistons, crankshaft, bearings, and gaskets into one comprehensive solution, eliminating guesswork and...09031457- SKU:
- 09031457
- Availability:
- Ships Same Business Day
- Weight:
- 20.25 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- ATV
- FEATURES:
- KIT CONTAINS +1.5 MM PISTON KIT
- UNITS:
- KIT
$1,249.95 -
Wrench Rabbit Engine Rebuild Kit Yamaha YFZ350 Banshee 1987-2005 WR101-207
WRENCH RABBIT
$1,249.95When your two-stroke engine has logged serious miles, a complete rebuild with OEM-quality components is the only way to restore full power and reliability. The Wrench Rabbit WR101-207 kit eliminates guesswork by bundling all the critical internal...09031458- SKU:
- 09031458
- Availability:
- Ships Same Business Day
- Weight:
- 20.25 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- KIT CONTAINS +2 MM PISTON KIT
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- ATV
$1,249.95Qty in Cart: 0Quantity:Price:$1,249.95Subtotal: -
WRENCH RABBIT Engine Rebuild Kit WR101-208
WRENCH RABBIT
$895.95A complete engine rebuild demands precision, quality components, and meticulous attention to every bearing, seal, and gasket—mistakes compound quickly and cost you time and money. The WRENCH RABBIT WR101-208 eliminates guesswork by bundling OEM-grade...09031459- SKU:
- 09031459
- Availability:
- Ships Same Business Day
- Weight:
- 18.60 LBS
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- MODEL:
- WRENCH RABBIT
- UNITS:
- KIT
$895.95 -
Wrench Rabbit Engine Rebuild Kit Yamaha YFM350X Warrior 1987-2004 WR101-209
WRENCH RABBIT
$920.95When your Yamaha YFM350X Warrior's engine shows signs of wear—loss of compression, bearing play, or cooling issues—a full rebuild is the only way to restore peak performance and reliability. The Wrench Rabbit WR101-209 kit eliminates the guesswork by...09031460- SKU:
- 09031460
- Availability:
- Ships Same Business Day
- Weight:
- 18.70 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- UNITS:
- KIT
- FEATURES:
- KIT CONTAINS +0.5 MM PISTON
$920.95 -
Wrench Rabbit Engine Rebuild Kit for Yamaha YFM350X Warrior 1987-2004 WR101-210
WRENCH RABBIT
$895.95Engine wear and internal damage compromise reliability and performance on the track or trail. The Wrench Rabbit WR101-210 delivers a complete, OEM-quality rebuild solution for Yamaha YFM350X Warriors, eliminating guesswork and ensuring your engine runs...09031461- SKU:
- 09031461
- Availability:
- Ships Same Business Day
- Weight:
- 18.90 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- FEATURES:
- KIT CONTAINS +1 MM PISTON
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
$895.95Qty in Cart: 0Quantity:Price:$895.95Subtotal: -
Wrench Rabbit Engine Rebuild Kit for Yamaha YFM660F Grizzly 4x4 2002-2008 WR101-211
WRENCH RABBIT
$1,288.95When your Yamaha YFM660F Grizzly's engine shows signs of wear—whether it's loss of compression, bearing play, or general performance degradation—a complete rebuild is the most cost-effective path to restored reliability. This Wrench Rabbit kit eliminates...09031462- SKU:
- 09031462
- Availability:
- Ships Same Business Day
- Weight:
- 23.55 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- FEATURES:
- KIT CONTAINS +0.5 MM PISTON
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- UTV
- UNITS:
- KIT
$1,288.95 -
Wrench Rabbit Engine Rebuild Kit Yamaha YFM660F Grizzly 4x4 2002-2008 WR101-212
WRENCH RABBIT
$1,249.95When engine wear compromises performance and reliability, a quality rebuild kit is your most cost-effective path to restoring full power and longevity. The Wrench Rabbit WR101-212 consolidates all critical internal components into one comprehensive...09031463- SKU:
- 09031463
- Availability:
- Ships Same Business Day
- Weight:
- 23.30 LBS
- MODEL:
- WRENCH RABBIT
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- FEATURES:
- KIT CONTAINS +1 MM PISTON
- RIDING STYLE:
- ATV
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$1,249.95 -
Wrench Rabbit Engine Rebuild Kit Yamaha YFM660R Raptor 2001-2005 WR101-213
WRENCH RABBIT
$1,315.95When your Yamaha YFM660R Raptor's engine shows signs of wear, a complete rebuild restores reliability and performance without replacing the entire powerplant. The Wrench Rabbit WR101-213 kit eliminates the guesswork by bundling every critical...09031464- SKU:
- 09031464
- Availability:
- Ships Same Business Day
- Weight:
- 22.80 LBS
- MODEL:
- WRENCH RABBIT
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- FEATURES:
- KIT CONTAINS +0.5 MM PISTON
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$1,315.95 -
On Sale
Wrench Rabbit Engine Rebuild Kit Yamaha YFM660R Raptor 2001-2005 WR101-214
WRENCH RABBIT
MSRP: $1,193.95Now: $764.00Was: $1,193.95Engine wear and internal damage don't just compromise performance—they can leave you stranded mid-season. The Wrench Rabbit Engine Rebuild Kit WR101-214 gives you everything needed for a complete, professional-grade overhaul of your Yamaha YFM660R...09031465- SKU:
- 09031465
- Availability:
- Ships Same Business Day
- Weight:
- 22.85 LBS
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- REBUILD KIT
- FEATURES:
- KIT CONTAINS +1 MM PISTON
- TYPE:
- ENGINE
MSRP: $1,193.95Now: $764.00Was: $1,193.95Qty in Cart: 0Quantity:Price:MSRP: $1,193.95Now: $764.00Was: $1,193.95Subtotal: -
Wrench Rabbit Engine Rebuild Kit for 2004-2005 Honda TRX450R WR101-031
WRENCH RABBIT
$1,249.95When your Honda TRX450R's engine shows signs of wear—whether from high-mileage riding or track abuse—a full rebuild is the most cost-effective path to restoring reliability and performance. The Wrench Rabbit Engine Rebuild Kit eliminates guesswork by...09030971- SKU:
- 09030971
- Availability:
- Ships Same Business Day
- Weight:
- 17.80 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- MODEL:
- WRENCH RABBIT
- UNITS:
- KIT
- TYPE:
- ENGINE
$1,249.95 -
Wrench Rabbit Engine Rebuild Kit for 2006-2009 Honda TRX450R WR101-032
WRENCH RABBIT
$1,315.95A complete engine rebuild requires precision-matched components that work in harmony—and the Wrench Rabbit Engine Rebuild Kit delivers exactly that. This comprehensive kit eliminates the guesswork of sourcing individual parts by bundling everything you...09030972- SKU:
- 09030972
- Availability:
- Ships Same Business Day
- Weight:
- 17.40 LBS
- MODEL:
- WRENCH RABBIT
- ENGINE TYPE:
- 4-STROKE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$1,315.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2005-2010 Polaris Sportsman 800 4x4 WR101-057
WRENCH RABBIT
$1,711.95When your Polaris Sportsman 800 shows signs of wear—rough idle, loss of power, or bearing play—a complete engine rebuild is the most cost-effective path to restoration. The Wrench Rabbit Complete Engine Rebuild Kit (WR101-057) delivers all the critical...09030995- SKU:
- 09030995
- Availability:
- Ships Same Business Day
- Weight:
- 27.60 LBS
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 4-STROKE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- ATV
- MODEL:
- WRENCH RABBIT
- UNITS:
- KIT
- RIDING STYLE:
- UTV
- TYPE:
- ENGINE
$1,711.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Suzuki LT-R450 QuadRacer 2006-2008 WR101-059
WRENCH RABBIT
$1,211.95When your Suzuki LT-R450 QuadRacer's engine reaches the end of its service life, a complete rebuild kit eliminates the guesswork of sourcing individual components and ensures every critical surface meets OEM specifications. This Wrench Rabbit kit bundles...09030997- SKU:
- 09030997
- Availability:
- Ships Same Business Day
- Weight:
- 16.90 LBS
- UNITS:
- KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
$1,211.95 -
Wrench Rabbit Engine Rebuild Kit for 2004 Arctic Cat DVX 400 WR101-060
WRENCH RABBIT
$1,132.95When your 2004 Arctic Cat DVX 400's engine reaches the end of its service life, a quality rebuild kit saves you from sourcing individual components and risking compatibility issues. The Wrench Rabbit Engine Rebuild Kit delivers everything you need in one...09030998- SKU:
- 09030998
- Availability:
- Ships Same Business Day
- Weight:
- 16.35 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- TYPE:
- ENGINE
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- ATV
$1,132.95 -
WSM Top-End Rebuild Kit - Standard 54-300-10P
WSM
$134.56A top-end rebuild demands precision components that restore your engine to factory specifications—or better. The WSM Standard 54-300-10P kit consolidates everything you need for a complete piston-to-gasket refresh, eliminating the hassle of sourcing...5430010- SKU:
- 5430010
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- PISTON MATERIAL:
- ALUMINUM
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 72.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON SIZE METRIC:
- STANDARD
- PRODUCT NAME:
- REBUILD KIT
$134.56 -
WSM Top-End Rebuild Kit - .50 mm 54-300-12P
WSM
$134.56A top-end rebuild addresses the heart of engine performance—when pistons, rings, and gaskets wear, you lose compression, power, and reliability. This WSM kit delivers all the precision components needed for a complete refresh, ensuring your engine runs...5430012- SKU:
- 5430012
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- PISTON MATERIAL:
- ALUMINUM
- PISTON SIZE METRIC:
- +0.50 MM
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 72.50 MM
$134.56 -
WSM Top-End Rebuild Kit - 1 mm 54-300-14P
WSM
$134.56A properly rebuilt top-end is the foundation of reliable, consistent performance on the track or street. This WSM kit supplies everything needed for a complete piston assembly refresh—premium components engineered to OEM specifications with the precision...5430014- SKU:
- 5430014
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- PISTON MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 73.00 MM
- PISTON SIZE METRIC:
- +1.00 MM
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$134.56
