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
-
VESRAH Complete Gasket Kit - DS/JR 80 VG-3089
VESRAH
$59.35Complete gasket sets include all necessary engine gaskets, o-rings and valve guide oil seals to rebuild a complete engine (do not include oil seals); sold each, Top-end gasket sets include all necessary top-end gaskets, o-rings and valve guide oil seals...VG3089M- SKU:
- VG3089M
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- SET
- TYPE:
- COMPLETE
$59.35 -
VESRAH Complete Gasket Kit - RM125 VG-361
VESRAH
$53.31Complete gasket sets include all necessary engine gaskets, o-rings and valve guide oil seals to rebuild a complete engine (do not include oil seals); sold each, Top-end gasket sets include all necessary top-end gaskets, o-rings and valve guide oil seals...VG361- SKU:
- VG361
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
$53.31 -
VESRAH Complete Gasket Kit - DS80 VG-371
VESRAH
$32.42Complete Gasket Set VG371 Comprehensive gasket set for complete engine rebuilds. Includes all essential engine gaskets and o-rings. Features valve guide oil seals for optimal performance. Top-end gasket sets available for specific...VG371- SKU:
- VG371
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- COMPLETE
$32.42 -
VESRAH Intake Valve GG-1050-IN
VESRAH
$37.54Vesrah valves are precision manufactured from top-quality materials to match OEM valves09260314- SKU:
- 09260314
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- LENGTH METRIC:
- 78.89 MM
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER METRIC:
- 5.50 MM
- PRODUCT NAME:
- VALVE
- APPLICATION:
- INTAKE
- HEAD DIAMETER:
- 34,00 MM
- HEAD DIAMETER METRIC:
- 34.00 MM
- UNITS:
- EACH
$37.54 -
VESRAH Exhaust Gasket VE-4002
VESRAH
$54.95Exhaust Pipe Gaskets - VE4002 High-quality exhaust pipe gaskets designed for optimal sealing. Sold in convenient packs of 10 for multiple installations. Durable materials ensure long-lasting performance and reliability. Easy to install,...VX4002- SKU:
- VX4002
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- EXHAUST
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$54.95 -
VESRAH Complete Gasket Kit - TS250 VG-326
VESRAH
$33.89Complete Gasket Sets VG326 Comprehensive engine rebuild solution with all essential gaskets included. Top-end gasket sets designed for efficient and complete top-end rebuilds. Includes high-quality o-rings and valve guide oil seals for...VG326- SKU:
- VG326
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- COMPLETE
- UNITS:
- SET
$33.89 -
VESRAH Intake Valve GG-1043-IN
VESRAH
$41.00Vesrah valves are precision manufactured from top-quality materials to match OEM valves09260054- SKU:
- 09260054
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 36.00 MM
- HEAD DIAMETER:
- 36,00 MM
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER METRIC:
- 6.60 MM
- LENGTH METRIC:
- 105.70 MM
$41.00 -
VESRAH Exhaust Valve GG-1043-EX
VESRAH
$65.46Vesrah valves are precision manufactured from top-quality materials to match OEM valves09260055- SKU:
- 09260055
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- HEAD DIAMETER METRIC:
- 31.00 MM
- LENGTH METRIC:
- 104.20 MM
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER METRIC:
- 6.60 MM
- APPLICATION:
- EXHAUST
- HEAD DIAMETER:
- 31,00 MM
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
$65.46 -
POWERSTANDS RACING Case Saver/Sprocket Cover Gun - Metal 04-04152-29
POWERSTANDS RACING
$99.95Tough protection against broken chain from cracking engine cases, Machined lightweight design, Look so much better than stock cover, Replace OEM plastic sprocket cover, Anodized finish09500785- SKU:
- 09500785
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- ANODIZED
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- GUNMETAL
- PRODUCT NAME:
- CASE SAVER
- PRODUCT NAME:
- SPROCKET COVER
- TYPE:
- ENGINE
- UNITS:
- EACH
$99.95 -
POWERSTANDS RACING Case Saver/Sprocket Cover - Blue 07-04152-25
POWERSTANDS RACING
$99.95Tough protection against broken chain from cracking engine cases, Machined lightweight design, Look so much better than stock cover, Replace OEM plastic sprocket cover, Anodized finish09500792- SKU:
- 09500792
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- CASE SAVER
- TYPE:
- ENGINE
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET COVER
- COLOR/FINISH:
- ANODIZED
$99.95 -
POWERSTANDS RACING Cam Chain Tensioner 03-02000-29
POWERSTANDS RACING
$74.95CNC-machined from billet aluminum with a gunmetal finish, Replaces OEM automatic/hydraulic tensioner, Eliminates out-of-timing problems caused by the OEM automatic tensioner, Eliminates excess tension/premature engine wear caused by OEM hydraulic...09250786- SKU:
- 09250786
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- TENSIONER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM CHAIN
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- TYPE:
- MANUAL
$74.95Qty in Cart: 0Quantity:Price:$74.95Subtotal: -
POWERSTANDS RACING Cam Chain Tensioner 03-02001-29
POWERSTANDS RACING
$74.95CNC-machined from billet aluminum with a gunmetal finish, Replaces OEM automatic/hydraulic tensioner, Eliminates out-of-timing problems caused by the OEM automatic tensioner, Eliminates excess tension/premature engine wear caused by OEM hydraulic...09250787- SKU:
- 09250787
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- PRODUCT NAME:
- TENSIONER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM CHAIN
- TYPE:
- MANUAL
$74.95 -
POWERSTANDS RACING Cam Chain Tensioner 04-02002-29
POWERSTANDS RACING
$74.95CNC-machined from billet aluminum with a gunmetal finish, Replaces OEM automatic/hydraulic tensioner, Eliminates out-of-timing problems caused by the OEM automatic tensioner, Eliminates excess tension/premature engine wear caused by OEM hydraulic...09250790- SKU:
- 09250790
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- TENSIONER
- TYPE:
- MANUAL
- RIDING STYLE:
- ATV
- TYPE:
- CAM CHAIN
- UNITS:
- EACH
$74.95 -
POWERSTANDS RACING Cam Chain Tensioner 05-02000-29
POWERSTANDS RACING
$74.95CNC-machined from billet aluminum with a gunmetal finish, Replaces OEM automatic/hydraulic tensioner, Eliminates out-of-timing problems caused by the OEM automatic tensioner, Eliminates excess tension/premature engine wear caused by OEM hydraulic...09250793- SKU:
- 09250793
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- TENSIONER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM CHAIN
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- TYPE:
- MANUAL
$74.95 -
POWERSTANDS RACING Drain Plug 00-01950-29
POWERSTANDS RACING
$25.95Bolts are CNC-machined from high-quality aluminum, Embedded magnet helps keep bolt in place, Pre-drilled holes make for easy installation of safety wires09200183- SKU:
- 09200183
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- DIAMETER - THREAD SIZE METRIC:
- M16 X 1.50 X 15 MM
- PRODUCT NAME:
- BOLT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OIL DRAIN
- COLOR/FINISH:
- GUNMETAL
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$25.95Qty in Cart: 0Quantity:Price:$25.95Subtotal: -
POWERSTANDS RACING Drain Plug 00-01941-25
POWERSTANDS RACING
$25.95Bolts are CNC machined from high-quality aluminum, Embedded magnet helps keep bolt in place, Predrilled holes make for easy installation of safety wires09200098- SKU:
- 09200098
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- DIAMETER - THREAD SIZE METRIC:
- M8 X 1.25 X 12 MM
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- BLUE
- FEATURES:
- MAGNETIC
- PRODUCT NAME:
- BOLT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OIL DRAIN
- UNITS:
- EACH
$25.95 -
POWERSTANDS RACING Drain Plug 00-01942-22
POWERSTANDS RACING
$25.95Bolts are CNC machined from high-quality aluminum, Embedded magnet helps keep bolt in place, Predrilled holes make for easy installation of safety wires09200099- SKU:
- 09200099
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- DIAMETER - THREAD SIZE METRIC:
- M10 X 1.25 X 20 MM
- FEATURES:
- MAGNETIC
- PRODUCT NAME:
- BOLT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OIL DRAIN
- UNITS:
- EACH
$25.95 -
POWERSTANDS RACING Drain Plug 00-01942-25
POWERSTANDS RACING
$25.95Bolts are CNC machined from high-quality aluminum, Embedded magnet helps keep bolt in place, Predrilled holes make for easy installation of safety wires09200101- SKU:
- 09200101
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- UNITS:
- EACH
- DIAMETER - THREAD SIZE METRIC:
- M10 X 1.25 X 20 MM
- COLOR/FINISH:
- BLUE
- FEATURES:
- MAGNETIC
- PRODUCT NAME:
- BOLT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OIL DRAIN
- MATERIAL:
- ALUMINUM
$25.95 -
POWERSTANDS RACING Drain Plug 00-01946-25
POWERSTANDS RACING
$25.95Bolts are CNC machined from high-quality aluminum, Embedded magnet helps keep bolt in place, Predrilled holes make for easy installation of safety wires09200109- SKU:
- 09200109
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- OIL DRAIN
- DIAMETER - THREAD SIZE METRIC:
- M12 X 1.50 X 15 MM
- COLOR/FINISH:
- BLUE
- PRODUCT NAME:
- BOLT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$25.95 -
POWERSTANDS RACING Drain Plug 00-01948-25
POWERSTANDS RACING
$25.95Bolts are CNC machined from high-quality aluminum, Embedded magnet helps keep bolt in place, Predrilled holes make for easy installation of safety wires09200114- SKU:
- 09200114
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- OIL DRAIN
- COLOR/FINISH:
- BLUE
- DIAMETER - THREAD SIZE METRIC:
- M14 X 1.25
- PRODUCT NAME:
- BOLT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$25.95
