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
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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)
$229.00Qty in Cart: 0Quantity:Price:$229.00Subtotal: -
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
$14.55Qty in Cart: 0Quantity:Price:$14.55Subtotal: -
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 -
SHINDY Carburetor Repair Kit - Polaris 03-411
SHINDY
$30.95A worn or gummed carburetor is one of the quickest ways to kill your Polaris sled's throttle response and fuel economy. This SHINDY rebuild kit gives you everything needed to restore your OEM carb to factory specifications—without the dealer markup. If...10031104- SKU:
- 10031104
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- REPAIR KIT
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- TYPE:
- CARBURETOR
$30.95 -
SHINDY Carburetor Repair Kit - Polaris 03-412
SHINDY
$38.95A carburetor running lean, rich, or with worn internals will compromise throttle response, fuel economy, and overall engine reliability. The SHINDY 03-412 Repair Kit gives you a complete solution to restore your Polaris carburetor to factory...10031105- SKU:
- 10031105
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- CARBURETOR
$38.95 -
SHINDY Carburetor Repair Kit - Polaris 03-413
SHINDY
$32.95A worn or gummed carburetor will rob your Polaris of throttle response and fuel efficiency—this comprehensive rebuild kit restores your carb to factory specifications with precision-engineered components. SHINDY's award-winning float valves and complete...10031106- SKU:
- 10031106
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- BLACK
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- CARBURETOR
$32.95 -
SHINDY Carburetor Repair Kit - Polaris 03-416
SHINDY
$38.95A carburetor that's out of tune is leaving horsepower on the table and creating inconsistent throttle response across all RPM ranges. The SHINDY 03-416 Repair Kit gives you everything needed to restore your Polaris carburetor to factory specifications—or...10031109- SKU:
- 10031109
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- BLACK
- RIDING STYLE:
- ATV
- TYPE:
- CARBURETOR
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- REPAIR KIT
- UNITS:
- KIT
$38.95Qty in Cart: 0Quantity:Price:$38.95Subtotal: -
MIKUNI Needle and Seat 786-46001-3.0
MIKUNI
$24.15A properly functioning needle and seat assembly is critical to fuel delivery precision and carburetor reliability—without it, you risk fuel starvation, inconsistent jetting, and poor throttle response. The MIKUNI 786-46001-3.0 is a genuine OEM...7864600130- SKU:
- 7864600130
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
$24.15 -
MIKUNI Needle and Seat 786-46001-3.3
MIKUNI
$24.15The needle and seat assembly is the critical control point in your carburetor's fuel delivery system—when it fails or wears, your jetting becomes unpredictable and performance suffers. A genuine Mikuni replacement ensures precise fuel metering and...7864600133- SKU:
- 7864600133
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$24.15 -
MIKUNI Needle and Seat 786-46001-3.5
MIKUNI
$24.15A properly functioning needle and seat assembly is critical to fuel delivery precision in any carbureted engine. The MIKUNI 786-46001-3.5 is an OEM-quality replacement that restores metering accuracy and eliminates fuel seepage that degrades performance...7864600135- SKU:
- 7864600135
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$24.15 -
MIKUNI Jet Needle J8-7DH02
MIKUNI
$10.50Precision fuel mixture control in the mid-range throttle position is critical for consistent performance, whether you're tuning a stock Mikuni carburetor or optimizing a modified engine. The MIKUNI Jet Needle J8-7DH02 delivers the exact atomization...7DH2- SKU:
- 7DH2
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MODEL:
- J8-7DH02
- PRODUCT NAME:
- JET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
$10.50 -
MIKUNI Jet Needle J8-7DH03
MIKUNI
$10.50The MIKUNI Jet Needle J8-7DH03 is essential for fine-tuning your carburetor's mid-range fuel mixture, directly impacting throttle response and engine performance across your power band. If you're running a Mikuni VM-series carburetor and experiencing...7DH3- SKU:
- 7DH3
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- NEEDLE
- MODEL:
- J8-7DH03
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
$10.50 -
MIKUNI Jet Needle J8-7DH05
MIKUNI
$10.50Precise mid-range fuel control is the foundation of responsive carburetor tuning, and the MIKUNI Jet Needle J8-7DH05 delivers exactly that. If your Mikuni VM carb is running rich or lean through the throttle's transition zone, a properly matched jet...7DH5- SKU:
- 7DH5
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- MODEL:
- J8-7DH05
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
$10.50 -
MIKUNI Main Jet - #150 - 4-Pack N102221-150
MIKUNI
$14.55If you're tuning a carbureted engine or replacing a worn main jet, the MIKUNI #150 is the precision component you need to dial in your fuel mixture accurately. This OEM-spec jet delivers consistent performance across a range of engine loads and RPMs,...KN102221150- SKU:
- KN102221150
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- JET
- TYPE:
- MAIN
- UNITS:
- 4 PACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- JET SIZE:
- 150
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- MATERIAL:
- BRASS
- MODEL:
- MIKUNI
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- WATERCRAFT
$14.55 -
MIKUNI Main Jet - #152.5 - 4-Pack N102221-1525
MIKUNI
$14.55Precision fuel delivery is fundamental to carburetor performance, and jet selection directly impacts your engine's air-fuel ratio across the RPM band. The MIKUNI #152.5 main jet delivers the exact fuel metering your carb requires for optimal throttle...KN1022211525- SKU:
- KN1022211525
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- MIKUNI
- RIDING STYLE:
- WATERCRAFT
- JET SIZE:
- 152.5
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
- UNITS:
- 4 PACK
$14.55 -
MIKUNI Main Jet - #155 - 4-Pack N102221-155
MIKUNI
$5.20If you're tuning a carbureted engine or restoring an OE application, jetting is everything—and a #155 main jet from Mikuni is a precision component that directly affects fuel delivery, throttle response, and overall engine performance. Whether you're...KN102221155- SKU:
- KN102221155
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- MODEL:
- MIKUNI
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- TYPE:
- MAIN
- JET SIZE:
- 155
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- 4 PACK
$5.20
