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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ProFilter Oil Filter for 2004-2024 Honda CRF150R PF-116
PRO FILTER
$6.99Enhance your engine's performance with the PRO FILTER Replacement Oil Filter PF-116. Designed to meet and exceed OEM specifications, this high-performance filter ensures optimal filtration and flow rates, making it suitable for both synthetic and...07120241- SKU:
- 07120241
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- FILTER MEDIA MATERIAL:
- PAPER
- UNITS:
- EACH
- COLOR/FINISH:
- YELLOW
- STYLE:
- STANDARD
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
$6.99 -
Pro Filter 2003-2005 KTM 250 EXC Oil Filter PF-157
PRO FILTER
$6.99Enhance your engine's performance with the PRO FILTER Replacement Oil Filter PF-157. Designed for optimal filtration, this high-performance oil filter ensures that your engine remains clean and efficient, whether using synthetic or petroleum-based oils...07120245- SKU:
- 07120245
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- STYLE:
- SHORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- YELLOW
$6.99 -
TMV Oil Plug - Blue - Yamaha 310OP501BU
TMV
$29.95Machined from 6061 T-6 aluminum, O-ring included09500293- SKU:
- 09500293
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- TYPE:
- OIL
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- BLUE
- MATERIAL:
- 6061 ALUMINUM
- PRODUCT NAME:
- PLUG
- UNITS:
- EACH
$29.95 -
MOOSE RACING Motor Gasket Kit with Seal - KX500 811474
MOOSE RACING
$73.14Moose can now handle all your gasket and seal needs at a fraction of OEM cost, Rebuild the engine and transmission with total confidence as each set is designed for durability and accurate fit, Oil seals are genuine OEM replacement seals, Sets include...M811474- SKU:
- M811474
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$73.14 -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811665
MOOSE RACING
$68.97Moose can now handle all your gasket and seal needs at a fraction of OEM cost, Rebuild the engine and transmission with total confidence as each set is designed for durability and accurate fit, Oil seals are genuine OEM replacement seals, Sets include...M811665- SKU:
- M811665
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$68.97 -
MOOSE RACING Top End Gasket Kit - XR200 810241
MOOSE RACING
$20.15Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is designed for durability and...M810241- SKU:
- M810241
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$20.15Qty in Cart: 0Quantity:Price:$20.15Subtotal: -
MOOSE RACING Top End Gasket Kit - CR250R 810250
MOOSE RACING
$23.33Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is designed for durability and...M810250- SKU:
- M810250
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$23.33Qty in Cart: 0Quantity:Price:$23.33Subtotal: -
KIBBLEWHITE Exhaust Valve - Suzuki 60-60718T
KIBBLEWHITE
$109.33Tensilite® valves are CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy, Finished with a CrN PVD coating that has a low coefficient of friction, and is impact, abrasion, and corrosion resistant, Made in the U.S.A.09262761- SKU:
- 09262761
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2150'
- TULIP ANGLE:
- 20°
- MODEL:
- TENSILITE®
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 31.00 MM
- RIDING STYLE:
- OFF-ROAD
$109.33Qty in Cart: 0Quantity:Price:$109.33Subtotal: -
KIBBLEWHITE Exhaust Valve - Yamaha 80-80766T
KIBBLEWHITE
$109.33Tensilite® valves are CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy, Finished with a CrN PVD coating that has a low coefficient of friction, and is impact, abrasion, and corrosion resistant, Made in the U.S.A.09262769- SKU:
- 09262769
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- STEM DIAMETER IMPERIAL:
- 0.2155'
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 20°
- HEAD DIAMETER METRIC:
- 30.00 MM
- MATERIAL:
- TITANIUM
- MODEL:
- TENSILITE®
- UNITS:
- EACH
$109.33Qty in Cart: 0Quantity:Price:$109.33Subtotal: -
KIBBLEWHITE Valve Guide Seal - Intake/Exhaust 71040-4
KIBBLEWHITE
$13.96Viton intake/exhaust seals, Made in the U.S.A.09263100- SKU:
- 09263100
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SEAL
- STEM DIAMETER IMPERIAL:
- 0.333'
- OUTSIDE DIAMETER IMPERIAL:
- 0.4550'
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- TYPE:
- VALVE GUIDE
- MATERIAL:
- VITON
- UNITS:
- 4 PACK
$13.96 -
On Sale
Cylinder Works Big Bore Cylinder Kit 2020-2022 KTM 350 EXC-F CW51008K01
CYLINDER WORKS
MSRP: $885.95Now: $797.36Was: $885.95Elevate your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit CW51008K01. Designed for seamless installation, this kit provides an exceptional upgrade over OEM cylinders, enhancing both power and efficiency without the need for complex...09310967- SKU:
- 09310967
- Availability:
- Ships Same Business Day
- Weight:
- 4.60 LBS
- OVERBORE IMPERIAL:
- +2.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.0:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 90,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 90.00 MM
- DISPLACEMENT:
- 366 CC
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- STREET
MSRP: $885.95Now: $797.36Was: $885.95Qty in Cart: 0Quantity:Price:MSRP: $885.95Now: $797.36Was: $885.95Subtotal: -
On Sale
Cylinder Works Standard Bore Cylinder KTM 65 SX 2009-2022 50005
CYLINDER WORKS
MSRP: $631.95Now: $568.76Was: $631.95Upgrade your engine with the Cylinder Works Standard 50005, a high-performance, ready-to-install direct bolt-on cylinder. Engineered for durability and precision, this cylinder offers a seamless fit and exceptional longevity, ensuring your machine...09311015- SKU:
- 09311015
- Availability:
- Ships Same Business Day
- Weight:
- 2.51 LBS
- ENGINE TYPE:
- 2-CYCLE
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 45,00 MM
- CYLINDER DIAMETER METRIC:
- 45.00 MM
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
MSRP: $631.95Now: $568.76Was: $631.95 -
On Sale
Cylinder Works High Compression Cylinder Kit Yamaha YZ250F 2001-2007 20002-K01HC
CYLINDER WORKS
MSRP: $750.95Now: $675.86Was: $750.95Elevate your engine's performance with the Cylinder Works High Compression Cylinder Kit. Designed for easy installation, this kit combines advanced engineering with premium materials to deliver exceptional durability and power. Experience seamless...09310296- SKU:
- 09310296
- Availability:
- Ships Same Business Day
- Weight:
- 3.33 LBS
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- HIGH COMPRESSION
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 77,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 77.00 MM
MSRP: $750.95Now: $675.86Was: $750.95Qty in Cart: 0Quantity:Price:MSRP: $750.95Now: $675.86Was: $750.95Subtotal: -
POWERSTANDS RACING Oil Cap Kit - Gold - M20 x 2.5 00-01311-23
POWERSTANDS RACING
$31.95CNC-machined from high-quality aluminum, E-clip is already safety wired to a mounting tab and the wire covered with silicon tubing that will not melt or discolor, Excellent resistance to extreme heat09500562- SKU:
- 09500562
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- CAP KIT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- OIL FILLER
- RIDING STYLE:
- STREET
- DIAMETER - THREAD SIZE IMPERIAL:
- M20 X 2.5
- MATERIAL:
- ALUMINUM
$31.95 -
On Sale
Wiseco 75mm Ring Set for Honda TRX300 FourTrax 1988-2000 2953XC
WISECO
MSRP: $49.95Now: $42.00Was: $49.95Enhance your engine's performance with the WISECO Ring Set 2953XC, designed specifically for optimal fit and function. Each set is tailored for a single piston, ensuring precision and reliability in every application. Upgrade your engine's efficiency and...2953XC- SKU:
- 2953XC
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- DISPLACEMENT:
- 282 CC
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 75.00 MM
- DISPLACEMENT:
- 246 CC
- UNITS:
- SET
MSRP: $49.95Now: $42.00Was: $49.95Qty in Cart: 0Quantity:Price:MSRP: $49.95Now: $42.00Was: $49.95Subtotal: -
On Sale
WISECO Piston Kit - Kawasaki WK1061
WISECO
MSRP: $389.95Now: $331.00Was: $389.95Wiseco High-Performance 2-Cycle Piston WK1061 Forged from high-silicone bar stock for enhanced durability. Designed for greater strength and reduced thermal expansion. Complete piston kits include everything needed for a full engine rebuild. Includes...WK1061- SKU:
- WK1061
- Availability:
- Ships Same Business Day
- Weight:
- 2.94 LBS
- DISPLACEMENT:
- 760 CC
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +1.00 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON DIAMETER METRIC:
- 80.89 MM
- BORE - OVERSIZE:
- +1,00 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- WATERCRAFT
- BORE SIZE METRIC:
- 81.00 MM
- PRODUCT NAME:
- REBUILD KIT
MSRP: $389.95Now: $331.00Was: $389.95Qty in Cart: 0Quantity:Price:MSRP: $389.95Now: $331.00Was: $389.95Subtotal: -
On Sale
Wiseco 66.5mm Piston Kit for 1979-1981 Yamaha DT175 471M06650
WISECO
MSRP: $154.95Now: $132.00Was: $154.95Engineered for peak performance, the WISECO Piston 471M06650 is crafted from a high-silicon alloy that ensures exceptional strength and reliability in both competitive and recreational settings. This piston is designed to meet the demands of trail and...471M06650- SKU:
- 471M06650
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,50 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON DIAMETER METRIC:
- 66.45 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 66.50 MM
- DISPLACEMENT:
- 172 CC
- STROKE LENGTH METRIC:
- 50.00 MM
MSRP: $154.95Now: $132.00Was: $154.95 -
Wossner Piston Kit 66.36mm for Suzuki RM250 2000-2002 8059DC
WOSSNER
$152.00Elevate your engine's performance with the WOSSNER Piston Kit 8059DC, expertly crafted for 2-stroke applications. This premium kit combines cutting-edge engineering and high-quality materials to deliver exceptional durability and efficiency, ensuring a...09105497- SKU:
- 09105497
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE - OVERSIZE:
- +0,02 MM
- DISPLACEMENT:
- 249 CC
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- BORE - OVERSIZE METRIC:
- +0.02 MM
- BORE SIZE METRIC:
- 66.42 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- ENGINE TYPE:
- 2-STROKE
- PISTON SIZE METRIC:
- 66.36 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$152.00Qty in Cart: 0Quantity:Price:$152.00Subtotal: -
Wossner Piston Kit Kawasaki KX85 2001-2025 8082DA
WOSSNER
$152.00Experience unmatched performance and reliability with the WOSSNER Piston Kit 8082DA, engineered for 2-stroke engines. This premium kit combines advanced materials and innovative design to enhance your engine's efficiency and longevity, ensuring a...09105506- SKU:
- 09105506
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 66.40 MM
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 66.34 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- SINGLE RING
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
$152.00Qty in Cart: 0Quantity:Price:$152.00Subtotal: -
Wossner Piston Kit 66.34mm Honda CR250R 1986-1996 8021DA
WOSSNER
$152.00Experience unparalleled performance with the WOSSNER Piston Kit 8021DA, designed specifically for 2-stroke engines. Crafted with precision engineering and high-quality materials, this piston kit ensures optimal efficiency and durability, making it a...09104727- SKU:
- 09104727
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 66.40 MM
- PISTON SIZE METRIC:
- 66.34 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- STANDARD SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
$152.00
