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
-
On Sale
EMGO Oil Filter 10-79110
EMGO
MSRP: $7.69Now: $7.31Was: $7.69Engine longevity starts with clean oil circulating through your engine, and the EMGO Oil Filter 10-79110 delivers exactly that with no compromises. Built from premium paper, metal, and rubber...1079110- SKU:
- 1079110
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- FEATURES:
- STANDARD
- FILTER MEDIA MATERIAL:
- PAPER
- COLOR/FINISH:
- YELLOW
- PRODUCT NAME:
- ELEMENT
- RIDING STYLE:
- STREET
- TYPE:
- OIL FILTER
- BASE COLOR:
- YELLOW
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
MSRP: $7.69Now: $7.31Was: $7.69 -
On Sale
EMGO Oil Filter 10-30000
EMGO
MSRP: $3.69Now: $3.51Was: $3.69Clean oil is the foundation of engine longevity, and the EMGO Oil Filter 10-30000 delivers the filtration precision your engine demands. Built with premium paper, metal, and rubber components, this...1030000- SKU:
- 1030000
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- YELLOW
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- STANDARD
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- BASE COLOR:
- YELLOW
- FILTER MEDIA MATERIAL:
- PAPER
MSRP: $3.69Now: $3.51Was: $3.69 -
On Sale
EMGO Oil Filter 10-26950
EMGO
MSRP: $5.08Now: $4.83Was: $5.08Engine longevity depends on consistent oil cleanliness, and this EMGO filter removes contaminants that would otherwise accelerate wear on critical components. Built from premium paper, metal, and...1026950- SKU:
- 1026950
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- COLOR/FINISH:
- YELLOW
- FEATURES:
- STANDARD
- RIDING STYLE:
- STREET
- FILTER MEDIA MATERIAL:
- PAPER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CARTRIDGE
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- OIL FILTER
MSRP: $5.08Now: $4.83Was: $5.08 -
On Sale
EMGO Oil Filter 10-82270
EMGO
MSRP: $8.15Now: $7.74Was: $8.15Clean oil is the foundation of engine longevity, and the EMGO Oil Filter 10-82270 delivers the filtration precision your engine demands. By trapping contaminants and particulates before they...07120418- SKU:
- 07120418
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- FEATURES:
- SPIN-ON
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
MSRP: $8.15Now: $7.74Was: $8.15 -
On Sale
EMGO Oil Filter 10-82260
EMGO
MSRP: $6.77Now: $6.43Was: $6.77Engine longevity starts with oil quality, and your oil filter is the first line of defense against contaminants that accelerate wear. The EMGO 10-82260 uses premium materials—high-grade paper, robust...07120417- SKU:
- 07120417
- Availability:
- Ships Same Business Day
- Weight:
- 0.52 LBS
- FEATURES:
- SPIN-ON
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
- TYPE:
- SPIN-ON
- BASE COLOR:
- BLACK
- COLOR/FINISH:
- BLACK
MSRP: $6.77Now: $6.43Was: $6.77 -
On Sale
EMGO Oil Filter 10-26963
EMGO
MSRP: $4.77Now: $4.53Was: $4.77Clean oil is the foundation of engine longevity, and a quality filter is your first line of defense against contaminants that accelerate wear. The EMGO Oil Filter 10-26963 uses premium paper, metal,...07120405- SKU:
- 07120405
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- BASE COLOR:
- YELLOW
- COLOR/FINISH:
- YELLOW
- TYPE:
- CARTRIDGE
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- FEATURES:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $4.77Now: $4.53Was: $4.77 -
On Sale
EMGO Oil Filter 10-26959
EMGO
MSRP: $4.77Now: $4.53Was: $4.77Engine longevity depends on consistent oil cleanliness, and the EMGO 10-26959 delivers OEM-grade filtration to keep contaminants out of critical engine passages. Constructed from premium paper,...07120403- SKU:
- 07120403
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- FEATURES:
- STANDARD
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- YELLOW
- PRODUCT NAME:
- ELEMENT
- TYPE:
- OIL FILTER
- BASE COLOR:
- YELLOW
- UNITS:
- EACH
MSRP: $4.77Now: $4.53Was: $4.77 -
On Sale
EMGO Oil Filter 10-26957
EMGO
MSRP: $4.62Now: $4.39Was: $4.62Clean oil is the foundation of engine longevity, and a quality filter is your first line of defense against wear-causing contaminants. The EMGO Oil Filter 10-26957 uses premium materials...07120402- SKU:
- 07120402
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- STANDARD
- FILTER MEDIA MATERIAL:
- PAPER
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- COLOR/FINISH:
- YELLOW
- BASE COLOR:
- YELLOW
- RIDING STYLE:
- STREET
MSRP: $4.62Now: $4.39Was: $4.62 -
On Sale
EMGO Oil Filter 10-26955
EMGO
MSRP: $6.62Now: $6.29Was: $6.62Clean oil is the foundation of engine longevity—contaminated oil accelerates wear on critical internal components, reducing performance and shortening engine life. The EMGO Oil Filter 10-26955 uses...07120400- SKU:
- 07120400
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- ELEMENT
- TYPE:
- OIL FILTER
- UNITS:
- EACH
- COLOR/FINISH:
- ORANGE
- FEATURES:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- ORANGE
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
MSRP: $6.62Now: $6.29Was: $6.62 -
On Sale
EMGO Oil Filter 10-26992
EMGO
MSRP: $7.54Now: $7.16Was: $7.54Engine longevity depends on clean oil circulating through critical components, and a quality oil filter is non-negotiable for maintaining that protection. The EMGO 10-26992 uses premium...07120391- SKU:
- 07120391
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- FEATURES:
- STANDARD
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- OIL FILTER
- COLOR/FINISH:
- YELLOW
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- CARTRIDGE
- BASE COLOR:
- YELLOW
- UNITS:
- EACH
MSRP: $7.54Now: $7.16Was: $7.54 -
On Sale
EMGO Oil Filter 10-99220
EMGO
MSRP: $3.85Now: $3.66Was: $3.85Engine longevity depends on consistent oil quality, and a premium filter is your first line of defense against contaminants that accelerate wear and reduce efficiency. The EMGO Oil Filter 10-99220...07120270- SKU:
- 07120270
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- ELEMENT
- TYPE:
- OIL FILTER
- FEATURES:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- COLOR/FINISH:
- YELLOW
- RIDING STYLE:
- OFF-ROAD
MSRP: $3.85Now: $3.66Was: $3.85 -
On Sale
EMGO Oil/Fuel Line - Black - 3/8" - 25' 14-03731
EMGO
MSRP: $33.54Now: $31.86Was: $33.54A quality fuel and oil line is fundamental to any reliable fuel system or custom build. The EMGO 3/8" line offers reinforced construction to handle both fuel and oil applications without degradation,...07110062- SKU:
- 07110062
- Availability:
- Ships Same Business Day
- Weight:
- 3.79 LBS
- INSIDE DIAMETER IMPERIAL:
- 3/8'
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FUEL
- BASE COLOR:
- BLACK
- INSIDE DIAMETER METRIC:
- 9.5 MM
- LENGTH METRIC:
- 7.62 M
- PRODUCT NAME:
- HOSE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- LENGTH IMPERIAL:
- 25'
- MATERIAL:
- NEOPRENE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- OIL LINE
- RIDING STYLE:
- STREET
- RIDING STYLE:
- WATERCRAFT
MSRP: $33.54Now: $31.86Was: $33.54 -
On Sale
EMGO Oil/Fuel Line - Black - 5/16" - 25' 14-03721
EMGO
MSRP: $28.77Now: $27.33Was: $28.77Quality fuel and oil lines are foundational to any reliable fuel system—whether you're building a custom carbureted engine, upgrading a fuel-injected platform, or fabricating a complete fuel delivery...07110061- SKU:
- 07110061
- Availability:
- Ships Same Business Day
- Weight:
- 3.82 LBS
- INSIDE DIAMETER METRIC:
- 7.9 MM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- WATERCRAFT
- BASE COLOR:
- BLACK
- LENGTH METRIC:
- 7.62 M
- PRODUCT NAME:
- HOSE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- LENGTH IMPERIAL:
- 25'
- MATERIAL:
- NEOPRENE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- OIL LINE
- INSIDE DIAMETER IMPERIAL:
- 5/16'
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FUEL
MSRP: $28.77Now: $27.33Was: $28.77 -
On Sale
EMGO Oil/Fuel Line - Black - 1/4" - 25' 14-03711
EMGO
MSRP: $23.38Now: $22.21Was: $23.38A quality fuel and oil line is non-negotiable for reliable engine performance and safety. Whether you're building a custom fuel system, replacing deteriorated lines, or fabricating a complete fuel...07110060- SKU:
- 07110060
- Availability:
- Ships Same Business Day
- Weight:
- 2.61 LBS
- INSIDE DIAMETER IMPERIAL:
- 1/4'
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FUEL
- BASE COLOR:
- BLACK
- INSIDE DIAMETER METRIC:
- 6.4 MM
- LENGTH METRIC:
- 7.62 M
- PRODUCT NAME:
- HOSE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- LENGTH IMPERIAL:
- 25'
- MATERIAL:
- NEOPRENE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- OIL LINE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
MSRP: $23.38Now: $22.21Was: $23.38 -
BOYESEN Impeller Pump CR250 WPI-02
BOYESEN
$79.95Stock water pumps struggle to maintain consistent coolant flow under sustained high-RPM conditions, allowing temperatures to spike and robbing horsepower when you need it most. The BOYESEN Impeller...WPI02- SKU:
- WPI02
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MODEL:
- SUPERCOOLER
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- IMPELLER
- TYPE:
- WATER PUMP
$79.95 -
BOYESEN Ignition Cover - Black - YZ125 SC33B
BOYESEN
$87.95Factory Ignition Cover SC33B Professional appearance enhances your engine's aesthetic. Seals effectively to protect engine components from dirt and moisture. Durable construction...SC33B- SKU:
- SC33B
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
$87.95 -
BOYESEN Ignition Cover - Black - YZ250 SC32AB
BOYESEN
$87.95Factory Ignition Cover SC32AB Professional appearance enhances your bike's overall look. Seals effectively to protect the engine from dirt and water. Durable construction outlasts stock...SC32AB- SKU:
- SC32AB
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
BOYESEN Ignition Cover - Black - RM250 SC23B
BOYESEN
$87.95Look like a professional with the Factory Ignition Cover, Seals properly, guarding inside of engine from dirt and water and outlasts stock covers, Boyesen Factory Covers are cast from the highest...SC23B- SKU:
- SC23B
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
BOYESEN Ignition Cover - Black - RM125 SC-21CB
BOYESEN
$87.95Factory Ignition Cover - SC21CB Professional appearance for your engine compartment Seals effectively to protect against dirt and water intrusion Durable construction outlasting standard...SC21CB- SKU:
- SC21CB
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
$87.95 -
BOYESEN Ignition Cover - Black - KX250 SC12B
BOYESEN
$87.95Factory Ignition Cover SC12B Professional-grade design enhances the look of your engine. Seals effectively to protect against dirt and water intrusion. Durable construction outlasts...SC12B- SKU:
- SC12B
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- COLOR/FINISH:
- POWDER-COATED
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY RACING
$87.95
