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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Pro Filter Dorsoduro 750 2010-2012 Oil Filter PF-565
PRO FILTER
$12.99The PRO FILTER Replacement Oil Filter PF-565 delivers OEM-exceeding filtration for the Dorsoduro 750, safeguarding your engine with advanced micro-pore technology that captures contaminants without sacrificing flow rate. Whether you're running synthetic...07120620- SKU:
- 07120620
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- BASE COLOR:
- BLACK
- STYLE:
- PREMIUM
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
$12.99 -
Pro Filter Replacement Oil Filter for 2011 Husqvarna SMR 449 PF-611
PRO FILTER
$8.99Keep your SMR 449's engine running clean with a filter engineered to surpass OEM standards. The PRO FILTER PF-611 delivers superior micro-pore filtration that captures contaminants without sacrificing flow rate, meaning your engine gets maximum...07120623- SKU:
- 07120623
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- EACH
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- STYLE:
- PREMIUM
$8.99 -
PRO FILTER Replacement Oil Filter PF-650
PRO FILTER
$7.99Engine protection starts with reliable filtration, and the PRO FILTER PF-650 delivers OEM-exceeding performance without compromise. Whether you're running synthetic or petroleum-based oils, this high-performance replacement maintains consistent flow...07120626- SKU:
- 07120626
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- STYLE:
- PREMIUM
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- BASE FINISH:
- CHROME
$7.99 -
Pro Filter Replacement Oil Filter for 2016-2019 Polaris RZR XP 1000 PF-198
PRO FILTER
$12.99Your RZR XP 1000's engine depends on consistent filtration to maintain peak performance and longevity. The PRO FILTER PF-198 delivers advanced micro-pore technology that captures contaminants more effectively than OEM filters while maintaining optimal...07120628- SKU:
- 07120628
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- STYLE:
- PREMIUM
$12.99 -
Pro Filter RZR PRO XP 2020-2021 PF-199
PRO FILTER
$12.99Regular oil changes are non-negotiable for maintaining engine reliability, but choosing the right filter is just as critical. The PRO FILTER PF-199 delivers superior filtration and flow characteristics that protect your RZR PRO XP's engine from harmful...07120629- SKU:
- 07120629
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- BASE COLOR:
- BLACK
- STYLE:
- PREMIUM
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
$12.99 -
On Sale
Pro Filter Billet Aluminum Oil Filter Cover Honda CRF250R 2010-2017 BCA-1001-01
PRO FILTER
MSRP: $49.99Now: $32.00Was: $49.99A quality oil filter cover directly impacts your engine's lubrication efficiency and overall reliability. The stock OEM cover on your CRF250R can restrict oil flow and corrode under track conditions—this billet aluminum replacement eliminates both...07120630- SKU:
- 07120630
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- TYPE:
- OIL FILTER
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK ANODIZED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
MSRP: $49.99Now: $32.00Was: $49.99 -
On Sale
Pro Filter Billet Aluminum Oil Filter Cover Honda CRF250R 2018-2025 BCA-1001-02
PRO FILTER
MSRP: $55.99Now: $36.00Was: $55.99Your Honda CRF250R's oil system works harder than stock components were designed to handle, especially under sustained track conditions or aggressive riding. This Pro Filter billet aluminum cover optimizes oil flow while protecting against thermal stress...07120631- SKU:
- 07120631
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK ANODIZED
- TYPE:
- OIL FILTER
MSRP: $55.99Now: $36.00Was: $55.99 -
Pro Filter Oil Filter Cover for Yamaha YZ450F 2010-2022 BCA-2002-00
PRO FILTER
$49.99If you're running a YZ450F, engine longevity depends on consistent oil delivery and reliable cooling. The PRO FILTER Oil Filter Cover replaces the stock unit with a precision-engineered billet aluminum design that optimizes oil flow while eliminating...07120634- SKU:
- 07120634
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- BLACK ANODIZED
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- OIL FILTER
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$49.99 -
Pro Filter Billet Aluminum Oil Filter Cover for Kawasaki KX450 2019-2024 BCA-3001-01
PRO FILTER
$39.99The stock oil filter cover on your KX450 restricts flow and adds unnecessary weight—this CNC-machined billet aluminum replacement eliminates both problems while delivering measurable gains in engine efficiency and durability. Built to exceed OEM...07120635- SKU:
- 07120635
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OIL FILTER
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK ANODIZED
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
$39.99Qty in Cart: 0Quantity:Price:$39.99Subtotal: -
Pro Filter Oil Filter Cover Suzuki RM-Z250 2007-2021 BCA-4002-00
PRO FILTER
$39.99Your RM-Z250's oil circulation system is only as good as its components—a restrictive or poorly-fitted cover compromises lubrication efficiency and engine longevity. The PRO FILTER Oil Filter Cover eliminates that weak link with precision engineering and...07120637- SKU:
- 07120637
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- OIL FILTER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK ANODIZED
- MATERIAL:
- ALUMINUM
$39.99 -
VESRAH Oil Filter SF-2005
VESRAH
$8.50Engine longevity depends on clean oil circulating through critical components, and particle contamination is the silent killer of performance engines. The VESRAH SF-2005 traps even the smallest contaminants before they reach your bearings and journals,...SF2005- SKU:
- SF2005
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CARTRIDGE
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$8.50 -
VESRAH Oil Filter SF-4005
VESRAH
$9.83Engine oil quality directly impacts engine longevity and performance—contamination from metal particles, dirt, and wear debris degrades oil viscosity and accelerates component wear. The VESRAH SF-4005 traps even the smallest contaminants, maintaining...SF4005- SKU:
- SF4005
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- UTV
- TYPE:
- SPIN-ON
- FILTER MEDIA MATERIAL:
- PAPER
$9.83 -
VESRAH Oil Filter SF-4007
VESRAH
$10.50Consistent oil filtration is non-negotiable for engine longevity and reliable performance. The VESRAH SF-4007 traps contaminants before they circulate through your engine, protecting critical components under demanding conditions. A quality oil filter is...SF4007- SKU:
- SF4007
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
$10.50 -
VESRAH Oil Filter SF-2008
VESRAH
$7.17Engine longevity depends on clean oil circulating through your engine, and the VESRAH SF-2008 delivers the filtration precision you need to protect your investment. This filter traps even the smallest contaminants that can cause wear and reduce...07120024- SKU:
- 07120024
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- CARTRIDGE
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
$7.17 -
WINDEROSA Crankshaft Oil Seal Set 622101
WINDEROSA
$22.67Oil seal degradation is one of the most common causes of engine oil leakage in high-performance watercraft, often going unnoticed until catastrophic failure occurs. The WINDEROSA Crankshaft Oil Seal Set 622101 replaces both the magneto-side and PTO-side...PD810775- SKU:
- PD810775
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- SEAL
- TYPE:
- OIL
- APPLICATION:
- CRANKSHAFT
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
$22.67 -
WINDEROSA Crankshaft Oil Seal Set 622104
WINDEROSA
$22.67Oil seal degradation is one of the most common causes of catastrophic engine failure in high-performance watercraft—and it's entirely preventable. The WINDEROSA Crankshaft Oil Seal Set 622104 provides OEM-equivalent sealing on both the magneto and PTO...PD810788- SKU:
- PD810788
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SEAL
- UNITS:
- SET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- OIL
- APPLICATION:
- CRANKSHAFT
$22.67 -
WINDEROSA Crankshaft Oil Seal Set 622116
WINDEROSA
$23.13Oil seal degradation is a silent killer of marine engines—once they fail, coolant and fuel contamination follows, leading to catastrophic bearing damage and costly repairs. The WINDEROSA Crankshaft Oil Seal Set 622116 replaces both the magneto-side and...PD810795- SKU:
- PD810795
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- APPLICATION:
- CRANKSHAFT
- MATERIAL:
- STAINLESS STEEL
- TYPE:
- OIL
- UNITS:
- SET
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- WATERCRAFT
$23.13 -
WINDEROSA Crankshaft Oil Seal Set 622802
WINDEROSA
$19.17Oil seal degradation is one of the most common causes of catastrophic engine failure in watercraft—yet it's entirely preventable with proper maintenance. The WINDEROSA Crankshaft Oil Seal Set 622802 provides complete seal coverage for both magneto and...PD810796- SKU:
- PD810796
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- UTV
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- APPLICATION:
- CRANKCASE
- TYPE:
- OIL
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SEAL
- UNITS:
- SET
$19.17Qty in Cart: 0Quantity:Price:$19.17Subtotal: -
WINDEROSA Crankshaft Oil Seal Set 622202
WINDEROSA
$25.33Engine oil seals are critical wear items that prevent fluid leakage and contamination at the crankshaft's most vulnerable points. If your watercraft is experiencing seepage around the magneto or PTO side, a degraded seal set will only worsen, leading to...PD810797- SKU:
- PD810797
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- APPLICATION:
- CRANKCASE
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- OIL
- UNITS:
- SET
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SEAL
$25.33 -
WORKS CONNECTION Oil Filter Cover - Red 27-006
WORKS CONNECTION
$76.95An oil filter cover serves as both a functional engine component and a visual statement on your build. This Works Connection piece combines precision engineering with bold aesthetics, protecting your oil filter while adding a refined detail that...09500881- SKU:
- 09500881
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- 6061 ALUMINUM
- UNITS:
- EACH
- BASE COLOR:
- RED
- TYPE:
- OIL FILTER
- COLOR/FINISH:
- RED
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
$76.95
