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
-
On Sale
MIKUNI Jet Needle J8-6DGY04-59
MIKUNI
MSRP: $10.50Now: $7.00Was: $10.50Fine-tuning your carburetor's mid-range fuel mixture requires precision—and the MIKUNI Jet Needle J8-6DGY04-59 delivers exactly that. If you're experiencing hesitation, bog, or inconsistent throttle response between idle and wide-open, a worn or...6DGY0459- SKU:
- 6DGY0459
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- MODEL:
- J8-6DGY04-59
- PRODUCT NAME:
- JET
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- TYPE:
- NEEDLE
MSRP: $10.50Now: $7.00Was: $10.50 -
MIKUNI Jet Needle J8-6DH02
MIKUNI
$10.50Precise mid-range fuel mixture control is essential for smooth power delivery and throttle response across your Mikuni carburetor's operating range. The MIKUNI Jet Needle J8-6DH02 directly influences how your engine transitions from idle to wide-open...6DH2- SKU:
- 6DH2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- MODEL:
- J8-6DH02
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$10.50 -
MIKUNI Jet Needle J8-6DH03
MIKUNI
$10.50If your Mikuni carburettor isn't delivering the fuel mixture you need in the mid-range throttle zone, a worn or incorrect jet needle will rob you of throttle response and overall performance. The MIKUNI Jet Needle J8-6DH03 is engineered to restore...6DH3- SKU:
- 6DH3
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- J8-6DH03
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
$10.50 -
MIKUNI Jet Needle J8-6DH04
MIKUNI
$10.50Fine-tuning your carburetor's mid-range fuel delivery is critical for responsive throttle control and consistent performance across the RPM band. The MIKUNI Jet Needle J8-6DH04 is a direct replacement for specific MIKUNI VM-series carburetors and OE...6DH4- SKU:
- 6DH4
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- MODEL:
- J8-6DH04
- TYPE:
- NEEDLE
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$10.50 -
MIKUNI Jet Needle J8-6DH07
MIKUNI
$10.50Fine-tuning your carburetor's mid-range fuel mixture is critical to achieving consistent throttle response and reliable performance across the RPM band. The MIKUNI Jet Needle J8-6DH07 delivers precise fuel atomization during partial throttle operation,...6DH7- SKU:
- 6DH7
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- MODEL:
- J8-6DH07
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$10.50 -
MIKUNI Jet Needle J8-6DH08
MIKUNI
$10.50Fine-tuning your carburetor's mid-range fuel delivery is critical for consistent throttle response and drivability, and a worn or incorrect jet needle is often the culprit behind hesitation or lean running. The MIKUNI J8-6DH08 is a precision-engineered...6DH8- SKU:
- 6DH8
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- J8-6DH08
- TYPE:
- NEEDLE
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$10.50 -
MIKUNI Mounting Flange I-VM28-200-1
MIKUNI
$35.70If you're running a spigot-type carburetor setup, a worn or damaged mounting flange will compromise airflow consistency and create vacuum leaks that tank performance. This MIKUNI flange restores proper carburetor sealing and alignment, ensuring...MVM28200- SKU:
- MVM28200
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- FLANGE INTAKE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- BORE SIZE METRIC:
- 28.00 MM
- TYPE:
- MOUNT ADAPTER
- UNITS:
- EACH
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- SNOW
$35.70Qty in Cart: 0Quantity:Price:$35.70Subtotal: -
MIKUNI Mounting Flange M-VM34-200K
MIKUNI
$35.70If you're running a spigot-type carburetor setup, a worn or damaged mounting flange can create vacuum leaks, poor idle quality, and unpredictable fuel delivery—all of which kill performance on the track or street. The MIKUNI Mounting Flange M-VM34-200K...MVM34200- SKU:
- MVM34200
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- BASE COLOR:
- BLACK
- BORE SIZE METRIC:
- 34.00 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- STREET
- TYPE:
- MOUNT ADAPTER
- PRODUCT NAME:
- FLANGE INTAKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- RUBBER
$35.70 -
MIKUNI Mounting Flange M-VM36-200K
MIKUNI
$35.70If you're running a spigot-type carburetor setup, a worn or damaged mounting flange can introduce air leaks, inconsistent fueling, and performance loss. The MIKUNI Mounting Flange M-VM36-200K restores a clean, precision fit between your carb and intake...MVM36200- SKU:
- MVM36200
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
- BORE SIZE METRIC:
- 36.00 MM
- MATERIAL:
- RUBBER
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- BLACK
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- FLANGE INTAKE
- RIDING STYLE:
- STREET
- TYPE:
- MOUNT ADAPTER
$35.70Qty in Cart: 0Quantity:Price:$35.70Subtotal: -
MIKUNI Mounting Flange KHS-004
MIKUNI
$36.99If you're running a spigot-type carburetor setup, a quality mounting flange is non-negotiable—it's the foundation for proper fuel delivery and engine stability. The MIKUNI KHS-004 is a direct replacement engineered for precision fitment, eliminating...MVM38200- SKU:
- MVM38200
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- MOUNT ADAPTER
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 38.00 MM
- MATERIAL:
- RUBBER
- RIDING STYLE:
- SNOW
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- FLANGE INTAKE
- UNITS:
- EACH
$36.99 -
MIKUNI Mounting Flange M-VM40-200K
MIKUNI
$35.70If you're running a spigot-type carburetor and dealing with mounting issues or a worn flange, this MIKUNI adapter is your direct solution. A quality mounting flange ensures proper carb alignment, prevents vacuum leaks, and maintains consistent fuel...MVM40200- SKU:
- MVM40200
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- BORE SIZE METRIC:
- 40.00 MM
- MATERIAL:
- RUBBER
- RIDING STYLE:
- SNOW
- TYPE:
- MOUNT ADAPTER
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- FLANGE INTAKE
- RIDING STYLE:
- UTV
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$35.70 -
MIKUNI Needle and Seat N149040-20
MIKUNI
$24.15The needle and seat assembly is the critical control point in your carburetor's fuel delivery system—when this wears, fuel flow becomes erratic and performance suffers. A genuine Mikuni replacement ensures precise fuel metering, consistent idle quality,...N14904020- SKU:
- N14904020
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$24.15 -
MIKUNI Needle and Seat N149040-25
MIKUNI
$24.15The needle and seat assembly is the critical control point in your carburetor's fuel delivery system—precision tolerances here directly impact throttle response, fuel economy, and engine stability across the entire RPM range. A worn or damaged needle and...N14904025- SKU:
- N14904025
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$24.15 -
MIKUNI Needle and Seat N149040-28
MIKUNI
$24.15The needle and seat assembly is a critical component in carburetor fuel metering—when it wears, you'll experience flooding, lean conditions, or inconsistent jetting across the RPM range. Genuine Mikuni replacements restore precise fuel control and...N14904028- SKU:
- N14904028
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$24.15 -
MIKUNI Coupling Kit for Duals MK-BN/001
MIKUNI
$52.95Running dual Mikuni carburetors requires precision synchronization to deliver consistent fuel atomization across both units—any imbalance degrades throttle response and creates flat spots in your power band. The MIKUNI Coupling Kit (MK-BN/001) solves...MKBN001- SKU:
- MKBN001
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- JET KIT
- TYPE:
- CARBURETOR
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- RIDING STYLE:
- WATERCRAFT
$52.95 -
MIKUNI Standard BN Carburetor Series Repair Kit MK-BN38/44
MIKUNI
$40.99A worn or deteriorating diaphragm can leave your Mikuni carburetor running lean, causing stumbling, hesitation, and unpredictable jetting. This repair kit restores proper fuel metering and atomization without the cost and downtime of a complete...MKBN3844- SKU:
- MKBN3844
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
- PRODUCT NAME:
- JET KIT
- TYPE:
- CARBURETOR
$40.99 -
MIKUNI Super BN Series Carburetor Rebuild Kit MK-BN38/44 SPR
MIKUNI
$85.95A MIKUNI Super BN Series carburetor demands precision tuning to maintain peak performance, and worn internal components directly compromise fuel atomization and throttle response. This complete rebuild kit supplies all gaskets, seals, jets, and internal...MKBN3844SPR- SKU:
- MKBN3844SPR
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- JET KIT
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
- TYPE:
- CARBURETOR
$85.95Qty in Cart: 0Quantity:Price:$85.95Subtotal: -
MIKUNI Super/HP Carburetor Series Needle Valve Kit MK-BN44 NV 2
MIKUNI
$25.99If you're running a high-performance carbureted engine, fuel delivery consistency directly impacts throttle response and peak power output. This needle valve kit eliminates pop-off inconsistencies that plague stock setups, allowing you to dial in precise...MKBN3844SPR2- SKU:
- MKBN3844SPR2
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- NEEDLE VALVE KIT
- RIDING STYLE:
- WATERCRAFT
- SPRING RATE METRIC:
- 80.00 G
- UNITS:
- KIT
$25.99 -
MIKUNI Power Jet Kit with Jets MK-406
MIKUNI
$26.99If you're running a VM-type Mikuni carburetor and want to unlock better throttle response and midrange performance, the MIKUNI Power Jet Kit with Jets MK-406 gives you the tuning capability to do it. This conversion kit transforms your standard VM carb...VMPJK- SKU:
- VMPJK
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- JET KIT
- RIDING STYLE:
- ATV
$26.99 -
MIKUNI Needle Jet VM34/05-O-6
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance requires precision, and the MIKUNI Needle Jet VM34/05-O-6 delivers exactly that. This genuine Mikuni component allows you to dial in the critical 1/4 to 3/4 throttle range—where most real-world riding...159O6- SKU:
- 159O6
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- JET SIZE:
- O-6
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- 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
