Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Wrench Rabbit Engine Rebuild Kit for KTM 50 SX 2009-2012 WR101-158
WRENCH RABBIT
$683.95A two-stroke engine rebuild demands precision components that won't compromise performance or reliability. The Wrench Rabbit Engine Rebuild Kit for KTM 50 SX delivers everything you need in one...09031259- SKU:
- 09031259
- Availability:
- Ships Same Business Day
- Weight:
- 5.70 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$683.95 -
Wrench Rabbit Engine Kit Suzuki RMZ250 2004 WR101-070
WRENCH RABBIT
$1,092.95When your Suzuki RMZ250 two-stroke engine shows wear, a complete rebuild with OEM-quality components is the most reliable path to restoring peak performance. The Wrench Rabbit Engine Kit delivers...09031006- SKU:
- 09031006
- Availability:
- Ships Same Business Day
- Weight:
- 12.15 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$1,092.95 -
Wrench Rabbit Engine Kit Suzuki RM-Z250 2007-2009 WR101-073
WRENCH RABBIT
$1,211.95A complete engine rebuild requires precision components and quality materials—this kit eliminates guesswork by bundling everything you need in one package. Whether you're refreshing a tired RM-Z250...09031008- SKU:
- 09031008
- Availability:
- Ships Same Business Day
- Weight:
- 13.50 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
$1,211.95Qty in Cart: 0Quantity:Price:$1,211.95Subtotal: -
Wrench Rabbit Complete Engine Rebuild Kit for Suzuki RMZ250 2010-2012 WR101-074
WRENCH RABBIT
$1,211.95When your Suzuki RMZ250 shows signs of wear—loss of compression, increased blow-by, or sluggish throttle response—a complete engine rebuild is your path back to reliable performance. This Wrench...09031009- SKU:
- 09031009
- Availability:
- Ships Same Business Day
- Weight:
- 12.45 LBS
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
$1,211.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 1994-1996 Kawasaki KX250 WR101-117
WRENCH RABBIT
$867.95A complete engine rebuild demands precision components and a single, reliable source—this kit eliminates guesswork by bundling everything you need to restore your KX250 to factory specifications...09031091- SKU:
- 09031091
- Availability:
- Ships Same Business Day
- Weight:
- 14.25 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$867.95 -
Wrench Rabbit Engine Rebuild Kit KTM 144 SX 2007-2008 WR101-119
WRENCH RABBIT
$985.95Two-stroke engines demand precision when rebuilding—subpar components lead to premature failure and lost track time. The Wrench Rabbit Engine Rebuild Kit delivers everything you need in one package,...09031093- SKU:
- 09031093
- Availability:
- Ships Same Business Day
- Weight:
- 11.30 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- UNITS:
- KIT
$985.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Kawasaki KX85 2006 WR101-133
WRENCH RABBIT
$618.95Two-stroke engines demand precision during rebuild—any compromise on component quality directly impacts reliability and performance. This Wrench Rabbit kit consolidates every critical component you...09031107- SKU:
- 09031107
- Availability:
- Ships Same Business Day
- Weight:
- 9.25 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
$618.95 -
Wrench Rabbit Engine Rebuild Kit for KTM 250 SX-F 2011 WR101-143
WRENCH RABBIT
$1,249.95When your KTM 250 SX-F engine has logged serious track time, an engine rebuild isn't just maintenance—it's a necessity to restore lost compression, seal integrity, and reliability. The Wrench Rabbit...09031113- SKU:
- 09031113
- Availability:
- Ships Same Business Day
- Weight:
- 12.45 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$1,249.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2013-2017 KTM 85 SX WR101-148
WRENCH RABBIT
$867.95A two-stroke engine rebuild demands precision and quality components that work in concert—cutting corners with mismatched parts leads to premature failure and wasted time. The Wrench Rabbit Complete...09031117- SKU:
- 09031117
- Availability:
- Ships Same Business Day
- Weight:
- 8.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$867.95Qty in Cart: 0Quantity:Price:$867.95Subtotal: -
Wrench Rabbit Engine Rebuild Kit Honda CRF450R 2002-2003 WR101-152
WRENCH RABBIT
$985.95When your Honda CRF450R 2002-2003 has logged serious track time, an engine rebuild isn't just maintenance—it's the foundation for consistent power and reliability. The Wrench Rabbit WR101-152 Engine...09031121- SKU:
- 09031121
- Availability:
- Ships Same Business Day
- Weight:
- 16.25 LBS
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
$985.95 -
Wrench Rabbit Engine Rebuild Kit for 2014-2015 Honda CRF250R WR101-153
WRENCH RABBIT
$1,052.95When your Honda CRF250R's engine starts showing signs of wear—whether from high-mileage racing or aggressive riding—a full rebuild is the most cost-effective way to restore factory performance and...09031122- SKU:
- 09031122
- Availability:
- Ships Same Business Day
- Weight:
- 12.90 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$1,052.95 -
Wrench Rabbit Engine Rebuild Kit KTM 200 XC-W 2013-2014 WR101-154
WRENCH RABBIT
$985.95Two-stroke engines demand precision components and proper assembly to deliver reliable performance lap after lap. The Wrench Rabbit Engine Rebuild Kit for KTM 200 XC-W consolidates every critical...09031123- SKU:
- 09031123
- Availability:
- Ships Same Business Day
- Weight:
- 11.45 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$985.95 -
WSM Drain Plug - Sea Doo 011-159
WSM
$9.94Regular oil changes are fundamental to maintaining peak engine performance and longevity on your Sea-Doo watercraft. A worn or damaged drain plug compromises the integrity of your oil system, leading...07120646- SKU:
- 07120646
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- BASE COLOR:
- BLACK
- RIDING STYLE:
- WATERCRAFT
- PRODUCT NAME:
- PLUG
- STYLE:
- SEA-DOO
- UNITS:
- EACH
- TYPE:
- OIL DRAIN
- COLOR/FINISH:
- BLACK
$9.94 -
MOOSE RACING Motor Gasket Kit with Seal - YZ125 811639
MOOSE RACING
$56.72A complete engine and transmission rebuild demands precision-fit gaskets and seals—factory tolerances won't accept substitutes. The MOOSE RACING Motor Gasket Kit delivers OEM-quality replacement...M811639- SKU:
- M811639
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$56.72 -
MOOSE RACING Motor Gasket Kit with Seal - CR500 811272
MOOSE RACING
$98.45A complete engine and transmission rebuild requires precision-fit gaskets and seals—factory OEM quality at a fraction of the cost. This Moose Racing kit eliminates the tedious sourcing of individual...09340102- SKU:
- 09340102
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- COMPLETE
$98.45 -
On Sale
EMGO Oil Filter 10-99300
EMGO
MSRP: $4.31Now: $4.09Was: $4.31Engine longevity depends on clean oil circulating through critical components, and a quality filter is non-negotiable for maintaining that cleanliness. The EMGO Oil Filter 10-99300 uses premium...1099300- SKU:
- 1099300
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- PRODUCT NAME:
- ELEMENT
- TYPE:
- OIL FILTER
- COLOR/FINISH:
- ORANGE
- FEATURES:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BASE COLOR:
- ORANGE
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
MSRP: $4.31Now: $4.09Was: $4.31 -
On Sale
EMGO Oil Filter 10-99200
EMGO
MSRP: $3.85Now: $3.66Was: $3.85Clean oil is the foundation of engine longevity, and the EMGO Oil Filter 10-99200 delivers the filtration performance your engine demands. Built with premium paper, metal, and rubber construction,...1099200- SKU:
- 1099200
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- ELEMENT
- TYPE:
- OIL FILTER
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- FEATURES:
- STANDARD
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- YELLOW
- UNITS:
- EACH
MSRP: $3.85Now: $3.66Was: $3.85 -
On Sale
EMGO Oil Filter 10-85900
EMGO
MSRP: $4.31Now: $4.09Was: $4.31Engine longevity depends on clean oil flowing through critical components, and a quality oil filter is non-negotiable for any serious enthusiast or professional. The EMGO 10-85900 uses premium...1085900- SKU:
- 1085900
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- FEATURES:
- STANDARD
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- BASE COLOR:
- YELLOW
- FILTER MEDIA MATERIAL:
- PAPER
- UNITS:
- EACH
- COLOR/FINISH:
- YELLOW
- PRODUCT NAME:
- ELEMENT
- RIDING STYLE:
- UTV
- TYPE:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
MSRP: $4.31Now: $4.09Was: $4.31 -
On Sale
EMGO Oil Filter 10-84200
EMGO
MSRP: $3.85Now: $3.66Was: $3.85A quality oil filter is one of the most cost-effective investments you can make in engine longevity. The EMGO 10-84200 uses premium paper, metal, and rubber construction to reliably trap contaminants...1084200- SKU:
- 1084200
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- ORANGE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- ORANGE
- UNITS:
- EACH
- PRODUCT NAME:
- ELEMENT
- RIDING STYLE:
- STREET
- TYPE:
- OIL FILTER
- FEATURES:
- STANDARD
- FILTER MEDIA MATERIAL:
- PAPER
MSRP: $3.85Now: $3.66Was: $3.85 -
On Sale
EMGO Oil Filter 10-82250
EMGO
MSRP: $7.38Now: $7.01Was: $7.38Engine longevity depends on clean oil circulating through critical components, and a quality oil filter is non-negotiable for protecting your investment. The EMGO 10-82250 uses premium paper, metal,...1082250- SKU:
- 1082250
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BASE COLOR:
- BLACK
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- FEATURES:
- SPIN-ON
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $7.38Now: $7.01Was: $7.38
