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
-
SHINDY Carburetor Repair Kit - XT225 03-893
SHINDY
$43.95A carburetor that's running lean, rich, or unstable wastes fuel and kills performance—this complete rebuild kit restores your XT225 to factory specifications with precision-engineered components. Rather than replacing the entire carburetor, this kit...10031250- SKU:
- 10031250
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CARBURETOR
- UNITS:
- KIT
$43.95 -
MIKUNI Needle Jet 990-793-004-Q-4
MIKUNI
$15.49Precise mid-range throttle response is critical for carburetors operating in the 1/4 to 3/4 throttle range, and the MIKUNI Needle Jet 990-793-004-Q-4 gives you direct control over this vital tuning window. Whether you're dialing in a race engine or...159Q4- SKU:
- 159Q4
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- JET SIZE:
- Q-4
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MODEL:
- TYPE 159
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
$15.49 -
MIKUNI Needle Jet 990-793-004-Q-6
MIKUNI
$15.49Precise carburetor tuning is the foundation of reliable engine performance across the mid-range throttle spectrum, and the MIKUNI Needle Jet 990-793-004-Q-6 gives you the control to dial in your fuel mixture with surgical accuracy. Rather than guessing...159Q6- SKU:
- 159Q6
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- JET SIZE:
- Q-6
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$15.49 -
MIKUNI Needle Jet 990-793-004-Q-8
MIKUNI
$15.49Precise carburetor tuning hinges on quality needle jets, and the MIKUNI 990-793-004-Q-8 delivers the fine-control adjustability that separates dialed-in engines from guesswork. This genuine Mikuni component enables mid-range fuel mixture optimization—the...159Q8- SKU:
- 159Q8
- 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 VM 30 MM - 36 MM SPIGOT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$15.49 -
MIKUNI Main Jet #260 - 4-Pack 4/042-260
MIKUNI
$5.20Precise fuel metering is non-negotiable in carbureted performance engines, and main jet selection directly controls your air-fuel ratio across the mid-range and top-end RPM band. If you're running Mikuni VM or TMX carburetors and experiencing lean...KM4042260- SKU:
- KM4042260
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD TYPE:
- HEX HEAD
- MATERIAL:
- BRASS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- 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
- FEATURES:
- FOR VM CARBURETORS
- JET SIZE:
- 260
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
$5.20 -
MIKUNI Main Jet #190 - 4-Pack 4/042-190
MIKUNI
$14.56Precise fuel metering is fundamental to carburetor tuning, and the right main jet directly impacts throttle response, fuel economy, and engine performance across the RPM band. Whether you're fine-tuning a Mikuni VM or TMX series carburetor for track...KM4042190- SKU:
- KM4042190
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- FEATURES:
- FOR VM CARBURETORS
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- JET SIZE:
- 190
- 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
- MATERIAL:
- BRASS
$14.56 -
MIKUNI Pilot Jet #45 4-Pack VM22/210-45
MIKUNI
$14.55A properly sized pilot jet is critical for smooth idle quality, precise throttle response, and reliable cold starts—especially when tuning carburetors for modified engines or altitude changes. The Mikuni #45 pilot jet delivers the exact fuel metering...KM545- SKU:
- KM545
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- BRASS
- MATERIAL:
- BRASS
- OVERALL LENGTH METRIC:
- 14.00 MM
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- 45
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- HEAD DIAMETER METRIC:
- 4.00 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- BASE COLOR:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
$14.55 -
MIKUNI Pilot Jet #50 4-Pack VM22/210-50
MIKUNI
$5.20A properly sized pilot jet is critical for smooth, predictable throttle response at low RPM—the foundation of any well-tuned carburator. This genuine Mikuni #50 pilot jet delivers consistent fuel atomization in the idle and off-idle circuits, eliminating...KM550- SKU:
- KM550
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BASE COLOR:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- HEAD DIAMETER METRIC:
- 4.00 MM
- OVERALL LENGTH METRIC:
- 14.00 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- PILOT
- JET SIZE:
- 50
- MATERIAL:
- BRASS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$5.20 -
MIKUNI Pilot Jet #55 4-Pack VM22/210-55
MIKUNI
$5.20A properly sized pilot jet is fundamental to carburetor tuning—it directly controls fuel delivery at idle and low throttle openings, affecting cold starts, throttle response, and fuel economy. If you're experiencing hesitation off the line, rough idling,...KM555- SKU:
- KM555
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- PILOT
- BASE COLOR:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BRASS
- JET SIZE:
- 55
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- 4 PACK
- HEAD DIAMETER METRIC:
- 4.00 MM
- MATERIAL:
- BRASS
- OVERALL LENGTH METRIC:
- 14.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
$5.20 -
MIKUNI Pilot Jet # 60 4-Pack VM22/210-60
MIKUNI
$5.20A pilot jet controls your carburetor's idle and low-speed fueling—get this wrong, and you'll deal with rough starts, stumbling, and wasted throttle response. The MIKUNI #60 pilot jet delivers precise fuel metering at low RPMs, ensuring smooth idle...KM560- SKU:
- KM560
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- BRASS
- MATERIAL:
- BRASS
- OVERALL LENGTH METRIC:
- 14.00 MM
- RIDING STYLE:
- OFF-ROAD
- HEAD DIAMETER METRIC:
- 4.00 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- BASE COLOR:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- JET SIZE:
- 60
- RIDING STYLE:
- STREET
$5.20 -
MIKUNI Pilot Jet #65 4-Pack VM22/210-65
MIKUNI
$5.20A lean-running carburetor starts with precision fuel metering at idle and low-throttle conditions—exactly what the pilot jet controls. If your VM, TM, or TMX carb is running rich off-idle or struggling to deliver crisp throttle response, swapping to the...KM565- SKU:
- KM565
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- 65
- MATERIAL:
- BRASS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- HEAD DIAMETER METRIC:
- 4.00 MM
- OVERALL LENGTH METRIC:
- 14.00 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- BASE COLOR:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
$5.20 -
MIKUNI Pilot Jet #75 4-Pack VM22/210-75
MIKUNI
$14.55A lean idle and smooth low-end response depend entirely on getting the pilot jet right. The Mikuni #75 pilot jet delivers precise fuel metering at cruise and idle RPMs, eliminating the hesitation and stumbling that plague incorrectly jetted carburetors...KM575- SKU:
- KM575
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- PILOT
- BASE COLOR:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- 4 PACK
- HEAD DIAMETER METRIC:
- 4.00 MM
- JET SIZE:
- 75
- MATERIAL:
- BRASS
- OVERALL LENGTH METRIC:
- 14.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
$14.55 -
MIKUNI Pilot Jet #15 4-Pack VM22/210-15
MIKUNI
$14.55A pilot jet directly controls your carburetor's fuel delivery at idle and low-throttle operation—the foundation of smooth, responsive engine behavior. If your bike is running rich at idle, hesitating on initial throttle input, or simply won't tune...KM515- SKU:
- KM515
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER METRIC:
- 4.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 4 PACK
- BASE COLOR:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- OVERALL LENGTH METRIC:
- 14.00 MM
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BRASS
- JET SIZE:
- 15
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- TYPE:
- PILOT
$14.55 -
MIKUNI Flat Slide Carburetor - 34mm TM34-2
MIKUNI
$229.00If you're stepping up from a round-slide carburetor, the MIKUNI TM34-2 flat slide design delivers the smooth bore effect that unlocks real airflow gains and sharper throttle response. The precisely engineered fuel metering gives you the control you need...TM34- SKU:
- TM34
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- NEEDLE JET:
- Q-2 (389 SERIES)
- SLIDE CUTAWAY:
- -
- STYLE:
- FLAT SLIDE
- AIR JET:
- NONE
- NEEDLE VALVE:
- 4.0
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- SPIGOT MOUNTING OUTSIDE DIAMETER:
- 40
- UNITS:
- EACH
- PRODUCT NAME:
- CARBURETOR CENTER PULL
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- CARBURETOR SIZE METRIC:
- 34.00 MM
- MAIN JET:
- 280 (4/042)
- NEEDLE:
- 5FP17
- PILOT JET:
- 50 (VM22/210)
$229.00 -
MIKUNI Pilot Jet #40 4-Pack VM22/210-40
MIKUNI
$14.55A pilot jet is the unsung foundation of carburetor tuning—it controls fuel delivery at idle and low throttle positions, directly impacting cold starts, smooth transitions, and overall drivability. If your engine stumbles off idle, hunts RPM, or refuses...KM540- SKU:
- KM540
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- BRASS
- HEAD DIAMETER METRIC:
- 4.00 MM
- JET SIZE:
- 40
- OVERALL LENGTH METRIC:
- 14.00 MM
- RIDING STYLE:
- STREET
- TYPE:
- PILOT
- MATERIAL:
- BRASS
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 4 PACK
$14.55 -
MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-60
MIKUNI
$5.20Precision fuel metering is the foundation of carburetor tuning, and the MIKUNI Super BN Series Pilot Jet directly controls your engine's idle and low-throttle response. If you're experiencing rough idle, flat spots off the line, or inconsistent fuel...KN10060660- SKU:
- KN10060660
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 60
- UNITS:
- 4 PACK
- MODEL:
- MIKUNI
- PRODUCT NAME:
- JET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- PILOT
$5.20 -
MIKUNI BSR Series Air Cut-Off Valve Assembly MK-405
MIKUNI
$22.99If your Mikuni BSR33 or BSR42 carburetor's air cut-off valve is sticking, leaking, or failing to respond properly, this genuine rebuild kit restores precise fuel control and eliminates rough idle issues that compromise performance. Rather than replacing...10030416- SKU:
- 10030416
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- AIR CUT-OFF
- RIDING STYLE:
- ATV
$22.99 -
K & N Air Filter - XR100/TRX90 HA-1088
K & N
$86.99A quality air filter is foundational to engine performance—it directly impacts horsepower delivery, throttle response, and engine longevity. The K&N HA-1088 delivers increased airflow compared to restrictive OEM filters while maintaining reliable...HA1088- SKU:
- HA1088
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- BLACK
- MOUNTING FLANGE/INSIDE DIAMETER IMPERIAL:
- 1.938'
- FILTER HEIGHT IMPERIAL:
- 3.00'
- FILTER SHAPE:
- ROUND
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BASE COLOR:
- BLACK
- FILTER MEDIA MATERIAL:
- COTTON GAUZE
- FLANGE POSITION:
- NONE
- MODEL:
- HIGH-FLOW
- COLOR/FINISH:
- RED
- FEATURES:
- WASHABLE
$86.99 -
SHINDY Carburetor Repair Kit - Kawasaki 03-117
SHINDY
$32.95If your Kawasaki carburetor is running rough, hesitating, or won't hold a consistent idle, a worn or gummed-up carb is almost certainly the culprit. The SHINDY 03-117 Repair Kit contains everything needed to rebuild your OEM carburetor to factory...10031034- SKU:
- 10031034
- Availability:
- Ships Same Business Day
- Weight:
- 15.10 LBS
- RIDING STYLE:
- ATV
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- REPAIR KIT
- COLOR/FINISH:
- BLACK
- TYPE:
- CARBURETOR
- UNITS:
- KIT
$32.95 -
SHINDY Carburetor Repair Kit - Polaris 03-409
SHINDY
$30.95A carbureted Polaris engine running rich, lean, or hunting at idle is a sign that internal seals and jets have deteriorated—a carburetor rebuild restores precise fuel metering and throttle response. This complete SHINDY kit supplies everything needed to...10031102- SKU:
- 10031102
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- REPAIR KIT
- COLOR/FINISH:
- BLACK
- TYPE:
- CARBURETOR
- RIDING STYLE:
- ATV
$30.95
