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
-
EMGO Oil Filter 10-30000
EMGO
$4.85Clean 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 filter removes contaminants that accelerate wear and...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
$4.85 -
EMGO Oil Filter 10-26950
EMGO
$7.30Engine 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 rubber materials, it maintains superior filtration...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
$7.30 -
EMGO Oil Filter 10-82270
EMGO
$9.50Clean 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 circulate through your engine, this filter protects critical...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
$9.50 -
EMGO Oil Filter 10-82260
EMGO
$7.20Engine 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 metal, and durable rubber—to deliver consistent...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
$7.20 -
EMGO Oil Filter 10-26963
EMGO
$5.87Clean 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, and rubber construction to deliver reliable filtration...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
$5.87 -
EMGO Oil Filter 10-26959
EMGO
$5.87Engine 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, metal, and rubber components, this filter maintains...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
$5.87 -
EMGO Oil Filter 10-26957
EMGO
$4.71Clean 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 throughout—high-grade paper, robust metal, and durable rubber...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
$4.71 -
EMGO Oil Filter 10-26955
EMGO
$7.07Clean 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 premium filtration media and robust construction to trap...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
$7.07 -
EMGO Oil Filter 10-26992
EMGO
$8.41Engine 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 materials—high-grade paper, robust metal construction, and durable...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
$8.41 -
EMGO Oil Filter 10-99220
EMGO
$4.85Engine 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 uses high-grade paper, metal, and rubber construction to...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
$4.85 -
EMGO Oil/Fuel Line - Black - 3/8" - 25' 14-03731
EMGO
$48.27A 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, making it an essential consumable for racers and...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
$48.27 -
EMGO Oil/Fuel Line - Black - 5/16" - 25' 14-03721
EMGO
$41.32Quality 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 setup. This EMGO reinforced line handles both fuel and...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
$41.32 -
EMGO Oil/Fuel Line - Black - 1/4" - 25' 14-03711
EMGO
$34.14A 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 delivery setup, this reinforced hose handles both 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
$34.14 -
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 Pump CR250 (WPI-02) is engineered to maximize flow rate...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 outperforms standard stock covers. Manufactured from...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 covers for long-lasting performance. Crafted from...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 grade of aluminum and are strong yet lightweight,...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 stock covers Crafted from premium-grade aluminum...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 standard stock covers. Manufactured from premium...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
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
BOYESEN Ignition Cover - Black - KX125 SC-11AB
BOYESEN
$87.95Factory Ignition Cover SC11AB Professional appearance enhances your engine's aesthetic. Seals effectively to protect the engine from dirt and water. Durable construction outlasts standard stock covers. Crafted from premium-grade aluminum...SC11AB- SKU:
- SC11AB
- Availability:
- Ships Same Business Day
- Weight:
- 0.64 LBS
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
- UNITS:
- EACH
$87.95
