Dirt Bike Air and Fuel
Dirt Bike Air & Fuel Systems at JJ Motorsports
Optimize your bike’s performance with high-quality air and fuel components from JJ Motorsports. Browse air filters, carburetors, and fuel system parts engineered to deliver clean airflow and a consistent fuel mix for peak efficiency. Ensure your bike runs smoothly by pairing these with other essential off-road dirt bike accessories.
Shop trusted brands like Motion Pro for cables and Uni Filter for high-flow filters. Explore related categories such as Dirt Bike Engine Parts for rebuilds or Dirt Bike Exhaust for complete tuning.
Top Dirt Bike Air & Fuel Products
- MOTION PRO Clutch Cable - Honda - Black Vinyl 02-0603 – Nylon-lined for smooth operation and OEM fit.
- UNI FILTER Filter - GS550/650 Miscellaneous NU-2439 – High-flow foam for better air intake and easy cleaning.
- MIKUNI Main Jet - 4-Pack N100604-1025 – Precision jets for VM16, HS40, HSR42/45/48 carbs.
- DYNOJET Power Vision 3 - Yamaha PV3-22-16 – Flash tunes with real-time data display for Yamaha models.
- UNI FILTER Filter - GS650G/GL/M NU-2440 – Precision fit with indefinite service life for Suzuki GS models.
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
-
MIKUNI Needle Jet VM34/05-O-8
MIKUNI
$15.49Precision carburetor tuning demands components built to exacting standards, and the genuine MIKUNI Needle Jet VM34/05-O-8 delivers exactly that. This OEM-spec needle jet gives you direct control over fuel delivery in the critical 1/4 to 3/4 throttle...159O8- SKU:
- 159O8
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- SNOW
- JET SIZE:
- O-8
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$15.49 -
MIKUNI Needle Jet 990-793-004-P-0
MIKUNI
$15.49Precise carburetor tuning separates competitive racers from the rest, and needle jets are essential for dialing in your mid-range throttle response. The MIKUNI 990-793-004-P-0 needle jet gives you granular control over fuel delivery at 1/4 to 3/4...159P0- SKU:
- 159P0
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- TYPE:
- NEEDLE
- UNITS:
- EACH
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- JET SIZE:
- P-0
$15.49 -
MIKUNI Needle Jet 990-793-004-P-2
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance requires precision, and a genuine Mikuni needle jet is the tool that delivers it. The needle jet directly controls fuel delivery during the critical 1/4 to 3/4 throttle range—where most real-world...159P2- SKU:
- 159P2
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- JET SIZE:
- P-2
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-004-P-4
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance requires precision, and the MIKUNI Needle Jet 990-793-004-P-4 delivers exactly that. This genuine Mikuni component gives you direct control over fuel metering in the critical 1/4 to 3/4 throttle...159P4- SKU:
- 159P4
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- SNOW
- JET SIZE:
- P-4
- PRODUCT NAME:
- JET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-004-P-5
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance requires precision, and the MIKUNI Needle Jet 990-793-004-P-5 delivers exactly that. This genuine Mikuni component gives you direct control over fuel-air mixture at 1/4 to 3/4 throttle opening—the RPM...159P5- SKU:
- 159P5
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- TYPE 159
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- JET SIZE:
- P-5
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-004-P-6
MIKUNI
$15.49Precise carburetor tuning requires the right needle jet, and the MIKUNI 990-793-004-P-6 delivers the mid-range fuel curve adjustments serious tuners demand. Whether you're dialing in a 1/4-throttle cruising sweet spot or optimizing 3/4-throttle...159P6- SKU:
- 159P6
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- JET SIZE:
- P-6
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
$15.49 -
MIKUNI Needle Jet 990-793-004-Q-0
MIKUNI
$15.49Precise carburetor tuning separates a dialed-in engine from one that merely runs. The MIKUNI Needle Jet 990-793-004-Q-0 gives you direct control over fuel delivery in the critical 1/4 to 3/4 throttle range, where most street and track driving happens. As...159Q0- SKU:
- 159Q0
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- JET SIZE:
- Q-0
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
$15.49 -
MIKUNI Needle Jet 990-793-003-P-0
MIKUNI
$15.49Carburetor tuning at part-throttle conditions requires precision—and that's where needle jets make their impact. The MIKUNI 990-793-003-P-0 is a genuine Mikuni component engineered to give you direct control over fuel atomization in the 1/4 to 3/4...166P0- SKU:
- 166P0
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- JET SIZE:
- P-0
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- UNITS:
- EACH
- FEATURES:
- FOR VM38 MM SPIGOT
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$15.49 -
MIKUNI Needle Jet 990-793-003-P-2
MIKUNI
$15.49Precise mid-range throttle response is critical to dialing in your carbureted engine, and needle jet selection directly controls fuel delivery in the 1/4 to 3/4 throttle window where most driving occurs. The genuine MIKUNI Needle Jet 990-793-003-P-2 is...166P2- SKU:
- 166P2
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MODEL:
- TYPE 166
- FEATURES:
- FOR VM38 MM SPIGOT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- JET SIZE:
- P-2
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-003-P-4
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance—where most of your throttle input happens—requires precision components that won't compromise your engine's responsiveness. The MIKUNI Needle Jet 990-793-003-P-4 is a genuine Mikuni component designed...166P4- SKU:
- 166P4
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- MODEL:
- TYPE 166
- RIDING STYLE:
- ATV
- JET SIZE:
- P-4
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- FEATURES:
- FOR VM38 MM SPIGOT
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-003-P-5
MIKUNI
$15.49Precise carburetor tuning is the foundation of responsive throttle control and optimal fuel atomization across the mid-range throttle band. The MIKUNI Needle Jet 990-793-003-P-5 is an OEM Mikuni component engineered for fine-tuning fuel delivery between...166P5- SKU:
- 166P5
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- P-5
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- FEATURES:
- FOR VM38 MM SPIGOT
- MODEL:
- TYPE 166
- TYPE:
- NEEDLE
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- UNITS:
- EACH
$15.49 -
MIKUNI Needle Jet 990-793-003-P-6
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance doesn't have to mean a complete rebuild. The MIKUNI Needle Jet 990-793-003-P-6 is a genuine Mikuni component that gives you direct control over fuel delivery in the critical 1/4 to 3/4 throttle...166P6- SKU:
- 166P6
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- P-6
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- JET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
- FEATURES:
- FOR VM38 MM SPIGOT
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
$15.49 -
MIKUNI Needle Jet 990-793-003-P-8
MIKUNI
$15.49Needle jet selection is critical for carburettor tuning in the mid-range throttle band—where your engine spends most of its time. The MIKUNI 990-793-003-P-8 offers precise fuel delivery calibration at 1/4 to 3/4 throttle opening, allowing you to dial in...166P8- SKU:
- 166P8
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- FOR VM38 MM SPIGOT
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- P-8
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- UNITS:
- EACH
- MATERIAL:
- BRASS
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
$15.49 -
MIKUNI Needle Jet 990-793-003-Q-0
MIKUNI
$15.49Precise carburetor tuning separates a well-running engine from a finely-dialed machine, and needle jet selection is critical to controlling fuel delivery in the critical 1/4 to 3/4 throttle range where most driving occurs. The MIKUNI Needle Jet...166Q0- SKU:
- 166Q0
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- JET SIZE:
- Q-0
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- FEATURES:
- FOR VM38 MM SPIGOT
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
$15.49 -
MIKUNI Needle Jet 990-793-003-Q-2
MIKUNI
$15.49Precise fuel-air mixture tuning in the 1/4 to 3/4 throttle range is critical for carburetors that perform consistently across real-world riding conditions. The MIKUNI Needle Jet 990-793-003-Q-2 gives you direct control over this crucial midrange...166Q2- SKU:
- 166Q2
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- FOR VM38 MM SPIGOT
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- UNITS:
- EACH
- JET SIZE:
- Q-2
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$15.49 -
MIKUNI Needle Jet 990-793-003-Q-6
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance requires precision, and the MIKUNI Needle Jet 990-793-003-Q-6 delivers exactly that. This genuine Mikuni component gives you direct control over fuel delivery in the critical 1/4 to 3/4 throttle...166Q6- SKU:
- 166Q6
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- FEATURES:
- FOR VM38 MM SPIGOT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- JET SIZE:
- Q-6
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- UNITS:
- EACH
- MODEL:
- TYPE 166
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-003-Q-8
MIKUNI
$15.49Precise carburetor tuning separates a well-running engine from a championship-caliber build. The MIKUNI Needle Jet 990-793-003-Q-8 gives you direct control over fuel delivery in the critical 1/4 to 3/4 throttle range, where most real-world driving occurs...166Q8- SKU:
- 166Q8
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- FOR VM38 MM SPIGOT
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- BRASS
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
- UNITS:
- EACH
- JET SIZE:
- Q-8
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
$15.49 -
MIKUNI Needle Jet 990-793-003-R-0
MIKUNI
$15.49Precise carburetor tuning demands precision components, and the MIKUNI Needle Jet 990-793-003-R-0 delivers exactly that. This genuine Mikuni jet gives you repeatable control over your air-fuel mixture in the critical 1/4 to 3/4 throttle range—where most...166R0- SKU:
- 166R0
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- R-0
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- JET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
- UNITS:
- EACH
- FEATURES:
- FOR VM38 MM SPIGOT
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
$15.49 -
MIKUNI Single Fuel Pump DF44-227
MIKUNI
$39.90If you're running a single-carb setup, fuel delivery consistency directly impacts throttle response and overall engine performance. The MIKUNI DF44-227 is purpose-built for this application, engineered in Japan to provide reliable, steady fuel pressure...DF44- SKU:
- DF44
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- UTV
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- FUEL PUMP
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- STYLE:
- SINGLE CARBURETOR
$39.90Qty in Cart: 0Quantity:Price:$39.90Subtotal: -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-1025
MIKUNI
$5.20Precision fuel delivery starts at the pilot jet—the component that controls your engine's low-speed fueling and idle quality. The MIKUNI Super BN Series Pilot Jet delivers consistent atomization and metering across the entire idle-to-cruise range,...KN1006061025- SKU:
- KN1006061025
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 102.5
- PRODUCT NAME:
- JET
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- MODEL:
- MIKUNI
- RIDING STYLE:
- WATERCRAFT
$5.20
