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
VESRAH Complete Gasket Kit - DS/JR 80 VG-3089
VESRAH
MSRP: $53.95Now: $38.00Was: $53.95A complete engine rebuild demands precision sealing at every interface—and this VESRAH gasket kit eliminates guesswork by bundling every gasket, o-ring, and valve guide oil seal you need in one package. Whether you're freshening a worn engine or doing a...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
MSRP: $53.95Now: $38.00Was: $53.95 -
VESRAH Complete Gasket Kit - RM125 VG-361
VESRAH
$53.31A complete engine rebuild demands precision gaskets that seal under extreme pressure and temperature cycling—factory gaskets degrade over time, leading to compression loss and fluid leakage that compromises performance. The VESRAH Complete Gasket Kit...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
$32.42A complete engine rebuild demands precision sealing at every junction—and this VESRAH gasket kit delivers all the components you need in one package. Whether you're doing a full top-to-bottom rebuild or addressing multiple leak points, having the correct...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
$32.42Qty in Cart: 0Quantity:Price:$32.42Subtotal: -
VESRAH Intake Valve GG-1050-IN
VESRAH
$31.17Intake valves are critical to your engine's breathing efficiency and combustion reliability. The VESRAH GG-1050-IN delivers OEM-equivalent precision at a competitive price point, making it an ideal choice for rebuilds, race engine assembly, or...09260314- 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
$31.17Qty in Cart: 0Quantity:Price:$31.17Subtotal: -
VESRAH Exhaust Gasket VE-4002
VESRAH
$54.95A failing exhaust gasket compromises both performance and longevity—exhaust leaks steal horsepower, increase noise, and allow corrosive gases to damage surrounding components. The VESRAH VE-4002 exhaust gaskets provide reliable, long-lasting seals that...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
$30.81A complete gasket kit eliminates guesswork during engine rebuilds by providing every seal you need in one package, reducing the risk of assembly errors and costly comebacks. Whether you're performing a full engine rebuild or addressing top-end wear, the...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
$30.81Qty in Cart: 0Quantity:Price:$30.81Subtotal: -
VESRAH Intake Valve GG-1043-IN
VESRAH
$34.33Valve degradation directly impacts combustion efficiency, throttle response, and overall engine longevity. The VESRAH Intake Valve GG-1043-IN delivers OEM-equivalent precision without the premium price tag, ensuring your engine maintains peak performance...09260054- 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
$34.33Qty in Cart: 0Quantity:Price:$34.33Subtotal: -
VESRAH Exhaust Valve GG-1043-EX
VESRAH
$54.83Exhaust valves are critical to your engine's breathing efficiency and longevity. Over time, OEM valves can warp, burn, or lose sealing integrity, causing power loss and increased emissions. The VESRAH Exhaust Valve GG-1043-EX delivers...09260055- 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
$54.83 -
POWERSTANDS RACING Case Saver/Sprocket Cover Gun - Metal 04-04152-29
POWERSTANDS RACING
$99.95A broken chain can destroy an engine case in seconds—this CNC-machined case saver intercepts that catastrophic failure before it happens. By replacing your OEM plastic sprocket cover with a precision-engineered aluminum design, you gain real protection...09500785- 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
$99.95A broken chain can destroy your engine case in seconds—this POWERSTANDS Racing case saver provides the proven protection you need to keep catastrophic damage from sidelining your bike. Built with machined lightweight construction and a hard-anodized...09500792- 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
$99.95Qty in Cart: 0Quantity:Price:$99.95Subtotal: -
POWERSTANDS RACING Cam Chain Tensioner 03-02000-29
POWERSTANDS RACING
$74.95The OEM automatic tensioner is a common failure point that compromises engine timing and accelerates wear on your cam chain and valvetrain. POWERSTANDS Racing's billet aluminum tensioner eliminates hydraulic pressure fluctuations and provides consistent,...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
$74.95 -
POWERSTANDS RACING Cam Chain Tensioner 03-02001-29
POWERSTANDS RACING
$74.95OEM automatic cam chain tensioners are notorious for wear, inconsistent tension, and timing problems that compromise engine reliability and performance. The POWERSTANDS RACING cam chain tensioner eliminates these issues with a precision-engineered...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
$74.95OEM automatic cam chain tensioners are prone to hydraulic failure, leading to timing inconsistencies and premature engine wear. The POWERSTANDS RACING cam chain tensioner eliminates these issues with a precision CNC-machined design that maintains...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
$74.95Factory cam chain tensioners are prone to hydraulic degradation, leading to timing slip and premature wear on your engine's most critical components. The POWERSTANDS RACING Cam Chain Tensioner replaces the OEM automatic tensioner with a...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
$25.95A quality drain plug might seem like a small detail, but it's one of the most frequently accessed points on your engine—and one of the easiest to lose or cross-thread. POWERSTANDS Racing's CNC-machined aluminum drain plug eliminates both problems with an...09200183- 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
$25.95Drain plugs are a critical component in any high-performance engine bay—they're responsible for retaining your oil during operation while allowing quick, clean drains during maintenance. The POWERSTANDS RACING Drain Plug eliminates guesswork and...09200098- 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
$25.95A drain plug might seem like a minor component, but a loose or lost plug can mean catastrophic engine damage and costly downtime. The POWERSTANDS RACING Drain Plug delivers the reliability you need with CNC-machined precision and a built-in magnet to...09200099- 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
$25.95A quality drain plug isn't just a fastener—it's insurance against oil starvation and catastrophic engine failure. The POWERSTANDS RACING Drain Plug combines precision engineering with practical safety features, ensuring your drain pan stays secure during...09200101- 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
$25.95Qty in Cart: 0Quantity:Price:$25.95Subtotal: -
POWERSTANDS RACING Drain Plug 00-01946-25
POWERSTANDS RACING
$25.95A quality drain plug might seem like a small detail, but it's critical for engine protection and reliability during high-performance driving. The POWERSTANDS Racing Drain Plug combines precision engineering with practical features that eliminate common...09200109- 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
$25.95A quality drain plug isn't just about preventing leaks—it's about reliability when it matters most. The POWERSTANDS RACING Drain Plug combines precision engineering with practical safety features, ensuring your oil system stays secure through...09200114- 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
