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 Replacement Oil Filter for Honda CB400F CB-1 1989-1990 PF-303B
PRO FILTER
$12.99Keep your CB400F or CB-1 running clean with a filter engineered to surpass OEM standards. The PRO FILTER PF-303B delivers superior dirt trapping and consistent oil flow, protecting your engine during both street and track conditions. Whether you're...07120611- SKU:
- 07120611
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- BASE COLOR:
- BLACK
- RIDING STYLE:
- STREET
- STYLE:
- PREMIUM
$12.99 -
On Sale
TMV Oil Plug - Gray - Kawasaki 310OP201GR
TMV
MSRP: $29.95Now: $19.00Was: $29.95A quality oil drain plug is a small detail that makes a big difference in routine maintenance. This TMV Oil Plug eliminates the hassle of stripped threads, cross-threading, or dealing with corroded factory plugs during oil changes. Built from...09500299- SKU:
- 09500299
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- GRAY
- PRODUCT NAME:
- PLUG
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 6061 ALUMINUM
- BASE COLOR:
- GRAY
- TYPE:
- OIL
MSRP: $29.95Now: $19.00Was: $29.95 -
On Sale
TMV Oil Plug - Red - Kawasaki 310OP201RE
TMV
MSRP: $29.95Now: $19.00Was: $29.95Stock drain plugs are prone to stripping and corrosion, compromising your engine's integrity. The TMV Oil Plug delivers a precision-engineered alternative with superior durability and a secure seal, eliminating the frustration of leaks and repeated...09500300- SKU:
- 09500300
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- PLUG
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- RED
- TYPE:
- OIL
- UNITS:
- EACH
- BASE COLOR:
- RED
- MATERIAL:
- 6061 ALUMINUM
MSRP: $29.95Now: $19.00Was: $29.95Qty in Cart: 0Quantity:Price:MSRP: $29.95Now: $19.00Was: $29.95Subtotal: -
On Sale
TMV Oil Plug - Red - Honda 310OP101RE
TMV
MSRP: $29.95Now: $19.00Was: $29.95A quality oil drain plug isn't just a fastener—it's critical for maintaining proper engine oil levels and preventing contamination during maintenance. The TMV Oil Plug delivers precision engineering with a secure, leak-free design that eliminates the...09500292- SKU:
- 09500292
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- COLOR/FINISH:
- RED
- TYPE:
- OIL
- MATERIAL:
- 6061 ALUMINUM
- PRODUCT NAME:
- PLUG
- UNITS:
- EACH
- BASE COLOR:
- RED
- RIDING STYLE:
- OFF-ROAD
MSRP: $29.95Now: $19.00Was: $29.95Qty in Cart: 0Quantity:Price:MSRP: $29.95Now: $19.00Was: $29.95Subtotal: -
VESRAH Oil Filter SF-1002
VESRAH
$5.50Engine longevity depends on clean oil, and the VESRAH SF-1002 delivers the filtration precision your engine demands. This filter traps microscopic contaminants that would otherwise circulate through your bearings, rings, and valve train, directly...SF1002- SKU:
- SF1002
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
$5.50Qty in Cart: 0Quantity:Price:$5.50Subtotal: -
VESRAH Oil Filter SF-1005
VESRAH
$6.17Clean oil is non-negotiable for engine longevity and performance. The VESRAH SF-1005 oil filter uses premium filter media to reliably capture contaminants down to microscopic levels, protecting critical engine components from wear and premature failure...SF1005- SKU:
- SF1005
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$6.17 -
VESRAH Oil Filter SF-3007
VESRAH
$5.67Engine longevity depends on clean oil, and the VESRAH SF-3007 delivers the filtration your engine demands. Premium filter media captures microscopic contaminants that compromise oil quality and accelerate wear, ensuring your engine maintains peak...SF3007- SKU:
- SF3007
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- TYPE:
- CARTRIDGE
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$5.67 -
VESRAH Oil Filter SF-3009
VESRAH
$9.83Clean oil is non-negotiable for engine longevity and performance. The VESRAH SF-3009 traps even the smallest contaminants before they circulate through your engine, protecting critical tolerances and maintaining optimal flow rates. A quality oil filter...SF3009- SKU:
- SF3009
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
$9.83 -
VESRAH Oil Filter SF-3011
VESRAH
$5.17A quality oil filter is non-negotiable for engine longevity and performance. The VESRAH SF-3011 delivers reliable particulate capture across demanding applications, protecting your engine from wear-inducing contaminants. With premium filter media and a...SF3011- SKU:
- SF3011
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
$5.17 -
VESRAH Oil Filter SF-4002
VESRAH
$5.33Engine longevity depends on clean oil, and the VESRAH SF-4002 delivers the filtration precision needed to protect your engine's critical components during demanding driving conditions. By trapping even the finest particulate matter, this filter maintains...SF4002- SKU:
- SF4002
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
$5.33Qty in Cart: 0Quantity:Price:$5.33Subtotal: -
VESRAH Oil Filter SF-2003
VESRAH
$6.33Engine oil quality directly impacts engine longevity and performance—contaminated oil accelerates wear on critical components like bearings and valve trains. The VESRAH SF-2003 traps even the smallest particulates with premium filter media, ensuring...SF2003- SKU:
- SF2003
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- RIDING STYLE:
- ATV
$6.33 -
ACERBIS X-Power Cover Kit - Black - KTM/Husqvarna 2645510001
ACERBIS
$76.95If you're running your KTM or Husqvarna hard in dusty conditions or tight terrain, engine cover damage means costly repairs and downtime. The ACERBIS X-Power Cover Kit shields your crankcase and ignition/clutch cover from the debris and impacts that come...09401764- SKU:
- 09401764
- Availability:
- Ships Same Business Day
- Weight:
- 1.46 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- PLASTIC
- MODEL:
- X-POWER
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
$76.95 -
MOOSE RACING Clutch Cover - Kawasaki 250 D70-2423MB
MOOSE RACING
$152.95The stock clutch cover on your Kawasaki 250 is vulnerable to heat damage and impact stress during aggressive riding or racing. This MOOSE Racing clutch cover upgrades you to aircraft-grade aluminum construction that dissipates heat more effectively while...09401857- SKU:
- 09401857
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
$152.95 -
MOOSE RACING Clutch Cover - Kawasaki 450 D70-2424MB
MOOSE RACING
$152.95The stock clutch cover on your Kawasaki 450 is vulnerable to heat damage and potential failure under aggressive riding conditions. This MOOSE RACING replacement upgrades you to aircraft-grade aluminum construction that runs cooler and lasts longer than...09401858- SKU:
- 09401858
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
$152.95 -
On Sale
MOOSE RACING Clutch Cover - Kawasaki 450 D70-2425MB
MOOSE RACING
MSRP: $156.95Now: $102.00Was: $156.95Your stock clutch cover is the weak link in high-stress riding conditions. The MOOSE RACING clutch cover replaces it with aircraft-grade aluminum construction that runs cooler, lasts longer, and handles the demands of competitive riding. If you're...09401859- SKU:
- 09401859
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
MSRP: $156.95Now: $102.00Was: $156.95 -
MOOSE RACING Clutch Cover - Suzuki 250Z D70-3421MB
MOOSE RACING
$157.95Your clutch cover endures extreme thermal and mechanical stress during aggressive riding—the OEM unit simply wasn't engineered for sustained high-performance use. This MOOSE RACING cover replaces that weak point with aircraft-grade aluminum construction...09401860- SKU:
- 09401860
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$157.95 -
MOOSE RACING Clutch Cover - Yamaha 250F D70-4475MB
MOOSE RACING
$159.95The stock clutch cover on your YZ250F takes a beating—especially in high-RPM racing conditions where heat and impact are constant threats. This MOOSE RACING clutch cover replaces that vulnerable OEM component with aircraft-grade aluminum construction...09401865- SKU:
- 09401865
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$159.95 -
MOOSE RACING Clutch Cover - Yamaha 450F D70-4421MB
MOOSE RACING
$157.95The stock clutch cover on your Yamaha 450F is a potential weak point under sustained racing loads and high operating temperatures. This MOOSE RACING replacement upgrades you to aircraft-grade aluminum construction that outperforms OEM specs in both...09401866- SKU:
- 09401866
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
$157.95 -
MOOSE RACING Ignition Cover - Yamaha 450F D70-4474MB
MOOSE RACING
$269.95Your stock ignition cover is a weak point in your engine's thermal management and structural integrity. Moose Racing's billet aircraft-grade aluminum replacement handles the heat your 450F generates while offering superior durability against impacts and...09401867- SKU:
- 09401867
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BASE COLOR:
- BLACK
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION
$269.95 -
MOOSE RACING Motor Gasket Kit with Seal - CR125 811231
MOOSE RACING
$90.04A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or wallet. MOOSE Racing delivers genuine OEM-equivalent seals at a fraction of OEM pricing, giving you the confidence to tackle a full...M811231- SKU:
- M811231
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$90.04
