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 Main Jet #170 - 4-Pack 4/042-170
MIKUNI
$14.56Precise fuel delivery is the foundation of carburetor tuning, and a properly sized main jet directly impacts your engine's power output and throttle response across the RPM band. The MIKUNI #170 main jet gives you the fuel metering you need for peak...KM4042170- SKU:
- KM4042170
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- HEAD TYPE:
- HEX HEAD
- MATERIAL:
- BRASS
- OVERALL LENGTH:
- 12 MM (0,47')
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- FEATURES:
- FOR VM CARBURETORS
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- JET SIZE:
- 170
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL DIAMETER METRIC:
- 6.00 MM
- OVERALL LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
$14.56 -
MIKUNI Main Jet #220 - 4-Pack 4/042-220
MIKUNI
$14.56Precision fuel metering is critical to carburetor performance, and a worn or incorrectly sized main jet directly impacts throttle response, fuel economy, and engine reliability. The MIKUNI Main Jet #220 delivers consistent atomization across the...KM4042220- SKU:
- KM4042220
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- RIDING STYLE:
- ATV
- HEAD TYPE:
- HEX HEAD
- MATERIAL:
- BRASS
- OVERALL LENGTH:
- 12 MM (0,47')
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- FEATURES:
- FOR VM CARBURETORS
- JET SIZE:
- 220
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL DIAMETER METRIC:
- 6.00 MM
- OVERALL LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
$14.56 -
MIKUNI Main Jet #240 - 4-Pack 4/042-240
MIKUNI
$5.20Precise fuel metering is fundamental to carburetor tuning, and a worn or incorrect main jet directly impacts throttle response, fuel economy, and peak power output. This OEM-spec Mikuni #240 jet delivers the exact fuel flow your engine demands across the...KM4042240- SKU:
- KM4042240
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 240
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- UNITS:
- 4 PACK
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- OVERALL DIAMETER METRIC:
- 6.00 MM
- OVERALL LENGTH:
- 12 MM (0,47')
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- HEAD TYPE:
- HEX HEAD
- MATERIAL:
- BRASS
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$5.20 -
MIKUNI Main Jet #250 - 4-Pack 4/042-250
MIKUNI
$5.20Running the wrong main jet size kills performance and creates drivability issues—lean stumbling, flat spots, or overly rich running that wastes fuel and fouls plugs. This Mikuni #250 main jet is a direct OEM replacement engineered to restore proper...KM4042250- SKU:
- KM4042250
- 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:
- 250
- 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
$5.20 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-100
MIKUNI
$5.20Precision fuel delivery at idle and low-throttle conditions is critical for carbureted engines—lean mixture and hesitation during cold starts or low-speed cruising can indicate a worn or incorrect pilot jet. The MIKUNI Super BN Series Pilot Jet delivers...KN100606100- SKU:
- KN100606100
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- PILOT
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- JET SIZE:
- 100
- MODEL:
- MIKUNI
- UNITS:
- 4 PACK
$5.20Qty in Cart: 0Quantity:Price:$5.20Subtotal: -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-110
MIKUNI
$14.55Precise fuel metering at idle and low-throttle conditions is critical to engine response and smooth operation—and that's where pilot jets make their mark. The MIKUNI Super BN Series Pilot Jet delivers consistent atomization and fuel delivery across a...KN100606110- SKU:
- KN100606110
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- JET
- MODEL:
- MIKUNI
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- JET SIZE:
- 110
- RIDING STYLE:
- WATERCRAFT
$14.55 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N1003606-1125
MIKUNI
$5.20Fine-tuning your carburetor's idle circuit is critical for consistent cold starts, smooth off-throttle response, and reliable low-RPM performance. The MIKUNI Super BN Series Pilot Jet delivers precision fuel metering in the pilot circuit, ensuring your...KN1006061125- SKU:
- KN1006061125
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- MIKUNI
- JET SIZE:
- 112.5
- RIDING STYLE:
- WATERCRAFT
- PRODUCT NAME:
- JET
- TYPE:
- PILOT
- UNITS:
- 4 PACK
$5.20 -
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
