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
-
On Sale
VESRAH Intake Valve GG-1041-IN
VESRAH
MSRP: $23.33Now: $22.16Was: $23.33A worn or damaged intake valve directly compromises combustion efficiency, reducing horsepower and increasing fuel consumption—a problem that compounds quickly in high-performance applications. The...09260050- SKU:
- 09260050
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- INTAKE
- HEAD DIAMETER:
- 28,50 MM
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 28.50 MM
- LENGTH METRIC:
- 96.60 MM
- PRODUCT NAME:
- VALVE
- STEM DIAMETER METRIC:
- 5.00 MM
- RIDING STYLE:
- OFF-ROAD
MSRP: $23.33Now: $22.16Was: $23.33 -
On Sale
VESRAH Exhaust Valve GG-1041-EX
VESRAH
MSRP: $41.33Now: $39.26Was: $41.33A worn or damaged exhaust valve compromises combustion efficiency, increases emissions, and reduces engine responsiveness. The VESRAH GG-1041-EX is precision-engineered to OEM specifications,...09260051- SKU:
- 09260051
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- HEAD DIAMETER:
- 23,50 MM
- RIDING STYLE:
- OFF-ROAD
- HEAD DIAMETER METRIC:
- 23.50 MM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- LENGTH METRIC:
- 95.60 MM
- PRODUCT NAME:
- VALVE
- STEM DIAMETER METRIC:
- 5.00 MM
MSRP: $41.33Now: $39.26Was: $41.33 -
On Sale
VESRAH Intake Valve GG-1030-IN
VESRAH
MSRP: $26.50Now: $25.18Was: $26.50A worn or damaged intake valve compromises combustion efficiency, throttle response, and fuel economy—degrading performance across the board. The VESRAH GG-1030-IN is precision-manufactured to OEM...09260052- SKU:
- 09260052
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
- STEM DIAMETER METRIC:
- 5.50 MM
- UNITS:
- EACH
- PRODUCT NAME:
- VALVE
- HEAD DIAMETER METRIC:
- 33.00 MM
- HEAD DIAMETER:
- 33,00 MM
- LENGTH METRIC:
- 102.70 MM
MSRP: $26.50Now: $25.18Was: $26.50 -
On Sale
VESRAH Exhaust Valve GG-1030-EX
VESRAH
MSRP: $47.83Now: $45.44Was: $47.83A worn or damaged exhaust valve compromises combustion efficiency, reduces power output, and can lead to catastrophic engine failure if left unaddressed. The VESRAH GG-1030-EX is precision-engineered...09260053- SKU:
- 09260053
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- ATV
- STEM DIAMETER METRIC:
- 5.50 MM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 29.00 MM
- LENGTH METRIC:
- 101.20 MM
- HEAD DIAMETER:
- 29,00 MM
MSRP: $47.83Now: $45.44Was: $47.83 -
On Sale
VESRAH Intake Valve GG-1046-IN
VESRAH
MSRP: $37.57Now: $35.69Was: $37.57If your engine is showing signs of wear or you're rebuilding for peak performance, OEM-quality intake valves are non-negotiable. The VESRAH Intake Valve GG-1046-IN delivers precision-manufactured...09260056- SKU:
- 09260056
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- LENGTH METRIC:
- 102.30 MM
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER METRIC:
- 6.60 MM
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 37.00 MM
- UNITS:
- EACH
- HEAD DIAMETER:
- 37,00 MM
- PRODUCT NAME:
- VALVE
MSRP: $37.57Now: $35.69Was: $37.57Qty in Cart: 0Quantity:Price:MSRP: $37.57Now: $35.69Was: $37.57Subtotal: -
On Sale
VESRAH Intake Valve GG-3044-IN
VESRAH
MSRP: $33.00Now: $31.35Was: $33.00A properly functioning intake valve is critical to engine performance and longevity. Over time, factory valves wear, warp, or develop carbon buildup that restricts airflow and reduces combustion...09260062- SKU:
- 09260062
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- HEAD DIAMETER METRIC:
- 36.00 MM
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER METRIC:
- 5.00 MM
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- HEAD DIAMETER:
- 36,00 MM
- LENGTH METRIC:
- 82.47 MM
MSRP: $33.00Now: $31.35Was: $33.00 -
On Sale
VESRAH Exhaust Valve GG-3044-EX
VESRAH
MSRP: $47.00Now: $44.65Was: $47.00A worn or damaged exhaust valve can compromise your engine's scavenging efficiency and power output—especially under high RPM conditions. The VESRAH GG-3044-EX is a precision-manufactured replacement...09260063- SKU:
- 09260063
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- HEAD DIAMETER:
- 29,00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- APPLICATION:
- EXHAUST
- LENGTH METRIC:
- 81.32 MM
- PRODUCT NAME:
- VALVE
- STEM DIAMETER METRIC:
- 5.00 MM
- HEAD DIAMETER METRIC:
- 29.00 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $47.00Now: $44.65Was: $47.00 -
On Sale
VESRAH Exhaust Valve GG-1050-EX
VESRAH
MSRP: $41.83Now: $39.74Was: $41.83A worn or damaged exhaust valve compromises engine efficiency, increases emissions, and can lead to costly internal damage if ignored. The VESRAH Exhaust Valve GG-1050-EX delivers OEM-equivalent...09260315- SKU:
- 09260315
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER:
- 20,50 MM
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 20.50 MM
- LENGTH METRIC:
- 78.54 MM
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER METRIC:
- 5.50 MM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
MSRP: $41.83Now: $39.74Was: $41.83 -
On Sale
VESRAH Top End Gasket Kit - TW 200 VG-6129-M
VESRAH
MSRP: $80.28Now: $76.27Was: $80.28A top-end rebuild demands precision gaskets that seal consistently under extreme combustion pressures—anything less risks compression loss and catastrophic engine failure. The VESRAH Top End Gasket...VG6129M- SKU:
- VG6129M
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- TOP END
- UNITS:
- SET
MSRP: $80.28Now: $76.27Was: $80.28Qty in Cart: 0Quantity:Price:MSRP: $80.28Now: $76.27Was: $80.28Subtotal: -
On Sale
VESRAH Top End Gasket Kit - YZ 125 VG-6138
VESRAH
MSRP: $41.93Now: $39.83Was: $41.93A top-end rebuild demands precision gaskets that seal consistently under extreme combustion pressures—compromising here means risking blow-by, oil leakage, and lost performance. The VESRAH VG-6138...VG6138- SKU:
- VG6138
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
MSRP: $41.93Now: $39.83Was: $41.93 -
On Sale
VESRAH Top End Gasket Kit - Yamaha 500 VG-674
VESRAH
MSRP: $55.67Now: $52.89Was: $55.67Engine gasket failure is one of the most common causes of performance loss and reliability issues in rebuilt engines. The VESRAH VG-674 Top End Gasket Kit ensures proper sealing across all critical...VG674- SKU:
- VG674
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $55.67Now: $52.89Was: $55.67 -
On Sale
VESRAH Complete Gasket Kit - CT90 VG-168
VESRAH
MSRP: $35.95Now: $34.15Was: $35.95A failed gasket can sideline your engine and drain your wallet fast. This complete gasket kit eliminates guesswork during rebuilds by delivering every seal, o-ring, and gasket you need in one...VG168- SKU:
- VG168
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- SET
MSRP: $35.95Now: $34.15Was: $35.95Qty in Cart: 0Quantity:Price:MSRP: $35.95Now: $34.15Was: $35.95Subtotal: -
On Sale
VESRAH Complete Gasket Kit - XL250S VG-185
VESRAH
MSRP: $87.40Now: $83.03Was: $87.40A complete engine rebuild demands precision gaskets that seal reliably under extreme combustion pressures—this VESRAH kit eliminates the risk of hunting down individual components and guarantees...VG185- SKU:
- VG185
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- SET
MSRP: $87.40Now: $83.03Was: $87.40 -
On Sale
VESRAH Complete Gasket Kit - XR 500 VG-187
VESRAH
MSRP: $78.95Now: $75.00Was: $78.95Engine gasket failure compromises compression, causes coolant and oil leaks, and can lead to catastrophic engine damage if left unaddressed. The VESRAH Complete Gasket Kit VG-187 supplies every...VG187- SKU:
- VG187
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
MSRP: $78.95Now: $75.00Was: $78.95 -
On Sale
VESRAH Complete Gasket Kit - Honda 125 VG-189
VESRAH
MSRP: $60.95Now: $57.90Was: $60.95Engine rebuilds demand precision—every gasket, seal, and o-ring must perform flawlessly under pressure. The VESRAH Complete Gasket Kit VG-189 eliminates the guesswork by bundling all essential...VG189- SKU:
- VG189
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
MSRP: $60.95Now: $57.90Was: $60.95 -
On Sale
VESRAH Complete Gasket Kit - Honda 200 VG-191
VESRAH
MSRP: $52.95Now: $50.30Was: $52.95A complete engine rebuild demands precision gasket selection—cutting corners here leads to oil leaks, compression loss, and catastrophic engine failure. The VESRAH VG-191 eliminates guesswork by...VG191- SKU:
- VG191
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
MSRP: $52.95Now: $50.30Was: $52.95Qty in Cart: 0Quantity:Price:MSRP: $52.95Now: $50.30Was: $52.95Subtotal: -
On Sale
VESRAH Complete Gasket Kit - XL/R185 VG-192
VESRAH
MSRP: $61.93Now: $58.83Was: $61.93A complete engine rebuild demands precision sealing at every critical junction—and this VESRAH gasket kit eliminates the guesswork by providing all necessary components in one purchase. Whether...VG192- SKU:
- VG192
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- SET
MSRP: $61.93Now: $58.83Was: $61.93Qty in Cart: 0Quantity:Price:MSRP: $61.93Now: $58.83Was: $61.93Subtotal: -
On Sale
VESRAH Complete Gasket Kit - RM125 VG-361
VESRAH
MSRP: $53.31Now: $50.64Was: $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...VG361- SKU:
- VG361
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
MSRP: $53.31Now: $50.64Was: $53.31Qty in Cart: 0Quantity:Price:MSRP: $53.31Now: $50.64Was: $53.31Subtotal: -
On Sale
VESRAH Complete Gasket Kit - DS80 VG-371
VESRAH
MSRP: $32.42Now: $30.80Was: $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...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
MSRP: $32.42Now: $30.80Was: $32.42Qty in Cart: 0Quantity:Price:MSRP: $32.42Now: $30.80Was: $32.42Subtotal: -
On Sale
VESRAH Intake Valve GG-1050-IN
VESRAH
MSRP: $31.17Now: $29.61Was: $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...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
MSRP: $31.17Now: $29.61Was: $31.17Qty in Cart: 0Quantity:Price:MSRP: $31.17Now: $29.61Was: $31.17Subtotal:
