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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On Sale
ATHENA Oil Seal Gasket Kit - Kawasaki P400250400069
ATHENA
MSRP: $57.95Now: $52.00Was: $57.95Engine seals and gaskets are critical wear items that directly impact oil retention, combustion efficiency, and overall engine longevity. A degraded or leaking seal compromises compression and allows contamination into your oil system—problems that...09346468- SKU:
- 09346468
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $57.95Now: $52.00Was: $57.95 -
K & N Oil Filter KN-141
K & N
$11.99If you're running synthetic or synthetic-blend oils in your high-performance engine, you need a filter built to handle the demands. The K&N KN-141 pairs premium synthetic media with high-flow design to deliver superior filtration without sacrificing oil...KN141- SKU:
- KN141
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BASE FINISH:
- NATURAL
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- RED
- FILTER MEDIA MATERIAL:
- SYNTHETIC
- LENGTH METRIC:
- 40 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- BASE COLOR:
- RED
- STYLE:
- STANDARD
- PRODUCT NAME:
- OIL FILTER
$11.99 -
MOOSE RACING Oil Seal Set - KLX250 822137
MOOSE RACING
$20.52Engine seals are critical to maintaining proper lubrication and preventing oil leakage that can compromise performance and damage internal components. This comprehensive MOOSE Racing Oil Seal Set gives you every crankshaft and engine seal needed for a...09351148- SKU:
- 09351148
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- ENGINE
- TYPE:
- OIL
$20.52Qty in Cart: 0Quantity:Price:$20.52Subtotal: -
MOOSE RACING Oil Seal Set - YZ 65 822993
MOOSE RACING
$26.00Engine seals are critical wear items that prevent oil leakage and maintain crankcase pressure—two factors directly affecting performance and engine longevity. The MOOSE RACING Oil Seal Set delivers OEM-quality seals engineered specifically for the YZ 65,...09351150- SKU:
- 09351150
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OIL
- UNITS:
- KIT
- APPLICATION:
- ENGINE
$26.00 -
PARTS UNLIMITED Oil Filter 16510-24501
PARTS UNLIMITED
$7.09A quality oil filter is the first line of defense against engine wear and contamination. The PARTS UNLIMITED Pro Series combines premium international materials—German filter media, English adhesives, and Japanese zinc-steel construction—to deliver...010025- SKU:
- 010025
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- UTV
- COLOR/FINISH:
- YELLOW
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
$7.09 -
PARTS UNLIMITED Oil Filter 5H0-13440-00
PARTS UNLIMITED
$14.23Oil filtration is non-negotiable in high-performance applications where engine stress and heat accelerate contamination. This Pro Series filter uses internationally-sourced materials—German filter media, English adhesives, and Japanese zinc steel—that...010028- SKU:
- 010028
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
- TYPE:
- CARTRIDGE
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- BASE COLOR:
- SILVER
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$14.23 -
PARTS UNLIMITED Oil Filter 2H0-13440-90
PARTS UNLIMITED
$7.09Engine oil filtration directly impacts engine longevity and performance—contaminated oil accelerates wear on critical components, while proper filtration maintains optimal viscosity and protection under high-stress racing conditions. The PARTS UNLIMITED...K150028- SKU:
- K150028
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- BASE COLOR:
- YELLOW
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
- STYLE:
- STANDARD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- COLOR/FINISH:
- YELLOW
- RIDING STYLE:
- OFF-ROAD
$7.09 -
PARTS UNLIMITED Oil Filter 580.38.005.000
PARTS UNLIMITED
$8.11A quality oil filter is non-negotiable for engine longevity and consistent performance. The PARTS UNLIMITED Pro Series delivers superior filtration using premium international materials—German filter media, English adhesives, and Japanese zinc steel—that...07120051- SKU:
- 07120051
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- YELLOW
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- FIRST FILTER FOR DUAL FILTER APPLICATIONS
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- BASE COLOR:
- YELLOW
$8.11 -
PARTS UNLIMITED Oil Filter 590.38.046.000
PARTS UNLIMITED
$7.09Engine protection starts with filtration. A quality oil filter removes contaminants that compromise bearing surfaces and accelerate wear—especially critical under sustained high-RPM operation or extended service intervals. The PARTS UNLIMITED Pro Series...07120052- SKU:
- 07120052
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- BASE COLOR:
- YELLOW
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- SECOND FILTER FOR DUAL FILTER APPLICATIONS
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- COLOR/FINISH:
- YELLOW
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
$7.09Qty in Cart: 0Quantity:Price:$7.09Subtotal: -
Pro Filter Oil Filter for 2007-2015 Hyosung GT250R PF-131
PRO FILTER
$6.99Engine longevity depends on consistent, effective filtration—and OEM filters often fall short of what high-performance engines demand. The Pro Filter PF-131 exceeds factory specifications with advanced micro-pore technology, ensuring superior...07120568- SKU:
- 07120568
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- STYLE:
- PREMIUM
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$6.99 -
Pro Filter Replacement Oil Filter for Suzuki DR200S 2015-2019 PF-132
PRO FILTER
$6.99Your DR200S engine relies on clean oil to deliver consistent power and longevity—factory filters can't always keep up with the demands of aggressive riding or extended service intervals. The PRO FILTER PF-132 uses advanced micro-pore filtration...07120569- SKU:
- 07120569
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- STYLE:
- PREMIUM
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BASE FINISH:
- CHROME
$6.99 -
Pro Filter Suzuki S40 Boulevard 2005-2016 Oil Filter PF-137
PRO FILTER
$6.99Your S40 Boulevard deserves filtration that matches OEM performance without the OEM price tag. The PRO FILTER PF-137 delivers advanced micro-pore technology to capture contaminants while maintaining consistent oil flow, keeping your engine protected...07120573- SKU:
- 07120573
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- OIL FILTER
- STYLE:
- PREMIUM
$6.99Qty in Cart: 0Quantity:Price:$6.99Subtotal: -
Pro Filter Replacement Oil Filter for Suzuki AN650A Burgman ABS Executive 2016 PF-138C
PRO FILTER
$15.99Factory oil filters often compromise flow efficiency and filtration consistency, leaving your Burgman's engine vulnerable to wear. The PRO FILTER PF-138C delivers OEM-exceeding protection with advanced micro-pore technology, ensuring your 650cc scooter...07120575- SKU:
- 07120575
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- STYLE:
- PREMIUM
- UNITS:
- EACH
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
$15.99 -
Pro Filter PF-139 Oil Filter for Suzuki DR-Z400S 2000-2009
PRO FILTER
$6.99Keep your DR-Z400S running clean and protected with the Pro Filter PF-139, engineered to trap more contaminants than stock filters while maintaining the flow rates your engine demands. Whether you're pushing hard on the track or logging miles in the...07120576- SKU:
- 07120576
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- STYLE:
- PREMIUM
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$6.99 -
WINDEROSA Oil Seal - GP1200/1300 622118
WINDEROSA
$26.53Preventive maintenance is critical for high-performance watercraft engines, and oil seal degradation is a silent threat to engine longevity. The WINDEROSA Oil Seal (622118) is engineered to maintain compression and prevent oil leakage in GP1200 and...09351111- SKU:
- 09351111
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
$26.53 -
WINDEROSA Oil Seal - Sea Doo Jetboat 622205
WINDEROSA
$18.12Oil seals are critical to maintaining proper lubrication and preventing fluid contamination in your Sea Doo jetboat engine. A worn or degraded seal allows oil to escape and water to infiltrate, leading to accelerated wear, corrosion, and potential...09351112- SKU:
- 09351112
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
- UNITS:
- KIT
- RIDING STYLE:
- WATERCRAFT
$18.12 -
WINDEROSA Oil Seal - 900 Ace 622206
WINDEROSA
$49.72An oil seal failure can quickly turn a minor leak into catastrophic engine damage, especially in high-performance applications where reliability is non-negotiable. The WINDEROSA 622206 oil seal is engineered to maintain a tight, consistent barrier...09351113- SKU:
- 09351113
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
- UNITS:
- KIT
$49.72 -
WINDEROSA Oil Seal - Kawasaki 622401
WINDEROSA
$29.67Oil seals are critical to engine longevity—they prevent oil leakage from your crankshaft and transmission while maintaining pressure in vital engine compartments. A compromised seal leads to oil loss, potential bearing damage, and catastrophic engine...09351114- SKU:
- 09351114
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- OIL
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
$29.67 -
WINDEROSA Oil Seal - Kawasaki 622404
WINDEROSA
$51.22Oil seal failure is one of the most common causes of fluid leakage and contamination in high-performance engines, compromising both reliability and longevity. The WINDEROSA 622404 is a direct OEM-specification replacement that restores a proper seal at...09351115- SKU:
- 09351115
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- KIT
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- OIL
$51.22 -
WINDEROSA Crankshaft Oil Seal Set 622203
WINDEROSA
$17.62Engine oil seal failure is a silent threat to watercraft reliability—once they degrade, internal leakage and contamination follow quickly. The WINDEROSA Crankshaft Oil Seal Set 622203 replaces both the magneto-side and PTO-side seals in one comprehensive...09350404- SKU:
- 09350404
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- APPLICATION:
- CRANKSHAFT
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
$17.62Qty in Cart: 0Quantity:Price:$17.62Subtotal:
