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 Super BN Series Pilot Jet - 4-Pack N100606-120
MIKUNI
$14.55Fine-tuning your carburetor's low-speed fuel delivery is critical for smooth idle quality, crisp throttle response, and consistent performance across varying engine loads. A worn or incorrect pilot jet restricts your ability to dial in the precise...KN100606120- SKU:
- KN100606120
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 120
- PRODUCT NAME:
- JET
- UNITS:
- 4 PACK
- MODEL:
- MIKUNI
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
$14.55 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-70
MIKUNI
$5.20Precise fuel metering at low throttle positions is essential for smooth idle quality and responsive low-end throttle transitions. A worn or incorrectly sized pilot jet creates a lean or rich condition that compromises cold starts, idle stability, and...KN10060670- SKU:
- KN10060670
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MODEL:
- MIKUNI
- RIDING STYLE:
- WATERCRAFT
- PRODUCT NAME:
- JET
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- JET SIZE:
- 70
$5.20 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-725
MIKUNI
$5.20Precise pilot jet sizing is critical for dialing in your carburetor's low-speed fuel delivery and off-idle response. The MIKUNI Super BN Series Pilot Jet delivers consistent atomization across the RPM range, preventing lean stumbles and hesitation during...KN100606725- SKU:
- KN100606725
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- MIKUNI
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- JET SIZE:
- 72.5
- TYPE:
- PILOT
$5.20 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-75
MIKUNI
$5.20Precise fuel metering at idle and low-throttle conditions directly affects engine response, fuel efficiency, and cold-start performance. The MIKUNI Super BN Series Pilot Jet delivers the calibrated fuel atomization your carbureted engine needs for...KN10060675- SKU:
- KN10060675
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- MIKUNI
- RIDING STYLE:
- WATERCRAFT
- JET SIZE:
- 75
- PRODUCT NAME:
- JET
- TYPE:
- PILOT
- UNITS:
- 4 PACK
$5.20 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-775
MIKUNI
$5.20Precise fuel metering at idle and low-throttle conditions directly impacts engine response, throttle transition quality, and cold-start performance. The MIKUNI Super BN Series Pilot Jet delivers the exacting fuel atomization your carbureted engine...KN100606775- SKU:
- KN100606775
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- WATERCRAFT
- JET SIZE:
- 77.5
- MODEL:
- MIKUNI
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
$5.20 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-80
MIKUNI
$5.20Proper pilot jet sizing is fundamental to carburetor tuning—it directly controls fuel delivery at idle and low-throttle conditions, where engine responsiveness and fuel efficiency are established. If your carb is running rich or lean at cruise, a...KN10060680- SKU:
- KN10060680
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- PILOT
- JET SIZE:
- 80
- PRODUCT NAME:
- JET
- UNITS:
- 4 PACK
- MODEL:
- MIKUNI
- RIDING STYLE:
- WATERCRAFT
$5.20 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-825
MIKUNI
$5.20Precise fuel metering at idle and low-load conditions is essential for clean throttle response and stable engine behavior across varying operating temperatures. The MIKUNI Super BN Series Pilot Jet delivers repeatable, accurate atomization in the pilot...KN100606825- SKU:
- KN100606825
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 82.5
- PRODUCT NAME:
- JET
- UNITS:
- 4 PACK
- MODEL:
- MIKUNI
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
$5.20Qty in Cart: 0Quantity:Price:$5.20Subtotal: -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-85
MIKUNI
$5.20Carburetor tuning requires precision, and the MIKUNI Super BN Series Pilot Jet delivers the exact fuel metering your engine needs at idle and low-rpm operation. A worn or incorrectly sized pilot jet causes stumbling, hesitation, and poor throttle...KN10060685- SKU:
- KN10060685
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- 4 PACK
- MODEL:
- MIKUNI
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
- JET SIZE:
- 85
$5.20Qty in Cart: 0Quantity:Price:$5.20Subtotal: -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-875
MIKUNI
$5.20Precise fuel metering at idle and low-RPM cruising is critical to engine response and fuel efficiency. The MIKUNI Super BN Series Pilot Jet delivers accurate atomization in the pilot circuit, eliminating lean stumbles and ensuring smooth throttle...KN100606875- SKU:
- KN100606875
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- MIKUNI
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- JET SIZE:
- 87.5
- UNITS:
- 4 PACK
- TYPE:
- PILOT
$5.20 -
MIKUNI Needle Jet VM38/41-P-8
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance requires precision, and the MIKUNI Needle Jet VM38/41-P-8 delivers exactly that. This genuine Mikuni component allows you to dial in your air-fuel mixture across the critical 1/4 to 3/4 throttle...247P8- SKU:
- 247P8
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- JET SIZE:
- P-8
- MODEL:
- TYPE 247
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- NEEDLE
- UNITS:
- EACH
- FEATURES:
- FOR OE YAMAHA
- RIDING STYLE:
- STREET
$15.49 -
MIKUNI Needle Jet VM38/41-Q-8
MIKUNI
$15.49Precise carburetor tuning demands precision components, and the MIKUNI Needle Jet VM38/41-Q-8 is engineered for exactly that. This genuine Mikuni needle jet gives you granular control over fuel delivery in the critical 1/4 to 3/4 throttle range—the zone...247Q8- SKU:
- 247Q8
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- JET SIZE:
- Q-8
- MODEL:
- TYPE 247
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- FEATURES:
- FOR OE YAMAHA
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
$15.49 -
On Sale
MIKUNI Needle Jet VM38/41-R-4
MIKUNI
MSRP: $14.95Now: $10.00Was: $14.95Fine-tuning your carburetor's mid-range performance requires precision, and the MIKUNI Needle Jet VM38/41-R-4 delivers exactly that. This genuine Mikuni component gives you direct control over fuel delivery during the critical 1/4 to 3/4 throttle...247R4- SKU:
- 247R4
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MODEL:
- TYPE 247
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- JET SIZE:
- R-4
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- FEATURES:
- FOR OE YAMAHA
- TYPE:
- NEEDLE
MSRP: $14.95Now: $10.00Was: $14.95 -
MIKUNI Needle Jet VM44/10-AA-0
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance requires precise control over fuel delivery in the 1/4 to 3/4 throttle range—exactly where needle jets make their critical impact. The MIKUNI VM44/10-AA-0 is a genuine Mikuni component engineered to...224AA0- SKU:
- 224AA0
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- JET SIZE:
- AA-0
- MATERIAL:
- BRASS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- MODEL:
- TYPE 224
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- NEEDLE
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- FOR VM 40 MM - 44 MM SPIGOT
- UNITS:
- EACH
$15.49 -
MIKUNI Needle Jet 785-24001-O-0
MIKUNI
$15.49Precise mid-range throttle response separates a well-tuned carbureted engine from one that's merely adequate. The MIKUNI Needle Jet 785-24001-O-0 gives you direct control over fuel delivery in the critical 1/4 to 3/4 throttle band—the range where most...389O0- SKU:
- 389O0
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- FEATURES:
- FOR TM 32 MM - 33 MM SPIGOT
- JET SIZE:
- O-0
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- TYPE:
- NEEDLE
- UNITS:
- EACH
- MATERIAL:
- BRASS
- MODEL:
- TYPE 389
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
$15.49Qty in Cart: 0Quantity:Price:$15.49Subtotal: -
MIKUNI Needle Jet 785-24001-Q-8
MIKUNI
$15.49Fine-tuning your carburetor's mid-range performance demands precision, and a genuine Mikuni needle jet is non-negotiable if you want consistent throttle response across the 1/4 to 3/4 opening range. This OEM component directly controls fuel atomization...389Q8- SKU:
- 389Q8
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- JET SIZE:
- Q-8
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- FEATURES:
- FOR TM 32 MM - 33 MM SPIGOT
- MATERIAL:
- BRASS
- MODEL:
- TYPE 389
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$15.49 -
MIKUNI Carburetor BN40I-38-24
MIKUNI
$485.95A carburetor is the heart of your fuel delivery system, and worn or mismatched units compromise throttle response, fuel economy, and overall engine performance. The MIKUNI BN40I-38-24 restores OE-specification precision tuning without the guesswork of...10020032- SKU:
- 10020032
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- PRODUCT NAME:
- CARBURETOR
- BASE COLOR:
- BLACK
- UNITS:
- EACH
- CARBURETOR SIZE METRIC:
- 38.00 MM
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- WATERCRAFT
$485.95 -
MIKUNI Carburetor BN44-40-8067
MIKUNI
$331.95High-performance watercraft demand a carburetor engineered for precision tuning and reliability under extreme conditions. The MIKUNI BN44-40-8067 delivers externally adjustable metering and pop-off calibration, allowing you to dial in fuel delivery...10020033- SKU:
- 10020033
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- CARBURETOR SIZE METRIC:
- 46.00 MM
- UNITS:
- EACH
- PRODUCT NAME:
- CARBURETOR
- RIDING STYLE:
- WATERCRAFT
- FEATURES:
- NO BUTTERFLY CHOKE
$331.95 -
MIKUNI Main Jet #280 - 4-Pack 4/042-280
MIKUNI
$14.56Precise jetting is the foundation of carburetor tuning—get it wrong and you're leaving power on the table or running dangerously lean. The MIKUNI Main Jet #280 is engineered for applications that demand a richer fuel mixture, ensuring proper atomization...KM4042280- SKU:
- KM4042280
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OVERALL LENGTH:
- 12 MM (0,47')
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- HEAD TYPE:
- HEX HEAD
- MATERIAL:
- BRASS
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- 4 PACK
- JET SIZE:
- 280
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH IMPERIAL:
- 0.47'
- FEATURES:
- FOR VM CARBURETORS
- OVERALL DIAMETER METRIC:
- 6.00 MM
- PRODUCT NAME:
- JET
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
$14.56 -
MIKUNI Main Jet #310 - 4-Pack 4/042-310
MIKUNI
$14.56Carburetor tuning demands precision, and a worn or incorrect main jet directly impacts fuel delivery at full throttle—compromising both power and reliability. This genuine Mikuni #310 jet pack gives you the exact orifice sizing needed to optimize your...KM4042310- SKU:
- KM4042310
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- FEATURES:
- FOR VM CARBURETORS
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL DIAMETER METRIC:
- 6.00 MM
- OVERALL LENGTH:
- 12 MM (0,47')
- OVERALL LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- MAIN
- HEAD TYPE:
- HEX HEAD
- JET SIZE:
- 310
- MATERIAL:
- BRASS
$14.56 -
MIKUNI Main Jet #320 - 4-Pack 4/042-320
MIKUNI
$14.56Fine-tuning your carburetor's fuel delivery is critical for achieving optimal engine performance, whether you're dialing in a race engine or restoring a classic machine. The MIKUNI #320 main jet delivers precise fuel metering that directly impacts...KM4042320- SKU:
- KM4042320
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD TYPE:
- HEX HEAD
- MATERIAL:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- JET SIZE:
- 320
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL DIAMETER METRIC:
- 6.00 MM
- OVERALL LENGTH:
- 12 MM (0,47')
- OVERALL LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- MAIN
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$14.56
