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 Jet Needle J8-6DJ30
MIKUNI
$10.50Fitments include several Mikuni VM model and some OE Mikuni carburetors, Jet needles control the fuel mixture in the mid-range throttle position, Some jet needles don't have measurements provided by Mikuni, Use charting to verify dimensions in...6DJ30- SKU:
- 6DJ30
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- J8-6DJ30
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$10.50Qty in Cart: 0Quantity:Price:$10.50Subtotal: -
MIKUNI Air Jet #1.7 - 4-Pack BS30/97-1.7
MIKUNI
$14.55Fit Mikuni VM26-VM44 spigot mount, VM29 and VM33 smoothbore, RS and TM carburetors, Use for fine tuning for regulating fuel-air mixture, Air jet meters airflow to needle jet, Made in JapanKBS309717- SKU:
- KBS309717
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- JET SIZE:
- 1.7
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BRASS
- MATERIAL:
- BRASS
- BASE COLOR:
- BRASS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- AIR
- UNITS:
- 4 PACK
$14.55Qty in Cart: 0Quantity:Price:$14.55Subtotal: -
MIKUNI Main Jet #125 - 4-Pack 4/042-125
MIKUNI
$14.56Fit Mikuni carburetors VM18 (clamp on), VM24-512, VM26-512, VM26-606, TMX Series and others that originally came with 4/042 main jets, Also fit several OE applications; check dimensions before ordering, Made in JapanKM4042125- SKU:
- KM4042125
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- 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
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- HEAD TYPE:
- HEX HEAD
- JET SIZE:
- 125
- MATERIAL:
- BRASS
- OVERALL LENGTH:
- 12 MM (0,47')
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- RIDING STYLE:
- ATV
$14.56Qty in Cart: 0Quantity:Price:$14.56Subtotal: -
MIKUNI Main Jet #130 - 4-Pack 4/042-130
MIKUNI
$14.56Fit Mikuni carburetors VM18 (clamp on), VM24-512, VM26-512, VM26-606, TMX Series and others that originally came with 4/042 main jets, Also fit several OE applications; check dimensions before ordering, Made in JapanKM4042130- SKU:
- KM4042130
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- BRASS
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- TYPE:
- MAIN
- HEAD TYPE:
- HEX HEAD
- JET SIZE:
- 130
- OVERALL DIAMETER METRIC:
- 6.00 MM
- OVERALL LENGTH:
- 12 MM (0,47')
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- FEATURES:
- FOR VM CARBURETORS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- ATV
$14.56Qty in Cart: 0Quantity:Price:$14.56Subtotal: -
MIKUNI Main Jet #135 - 4-Pack 4/042-135
MIKUNI
$14.56Fit Mikuni carburetors VM18 (clamp on), VM24-512, VM26-512, VM26-606, TMX Series and others that originally came with 4/042 main jets, Also fit several OE applications; check dimensions before ordering, Made in JapanKM4042135- SKU:
- KM4042135
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD TYPE:
- HEX HEAD
- OVERALL LENGTH:
- 12 MM (0,47')
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- BRASS
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- MAIN
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- UTV
- FEATURES:
- FOR VM CARBURETORS
- JET SIZE:
- 135
- OVERALL DIAMETER METRIC:
- 6.00 MM
- PRODUCT NAME:
- JET
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$14.56Qty in Cart: 0Quantity:Price:$14.56Subtotal: -
MIKUNI Main Jet - #140 - 4-Pack N102221-140
MIKUNI
$14.55Check dimensions before ordering, For CV and Power Jet carburetors as well as other OE applications that originally came with a N102.221 main jet, Sold to dealer in 4-pack, Made in JapanKN102221140- SKU:
- KN102221140
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- MIKUNI
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- WATERCRAFT
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- TYPE:
- MAIN
- JET SIZE:
- 140
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 4 PACK
$14.55Qty in Cart: 0Quantity:Price:$14.55Subtotal: -
MIKUNI Main Jet #430 - 4-Pack 4/042-430
MIKUNI
$5.20Fit Mikuni carburetors VM18 (clamp on), VM24-512, VM26-512, VM26-606, TMX Series and others that originally came with 4/042 main jets, Also fit several OE applications; check dimensions before ordering, Made in JapanKM4042430- SKU:
- KM4042430
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD TYPE:
- HEX HEAD
- MATERIAL:
- BRASS
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- JET SIZE:
- 430
- 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
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
$5.20Qty in Cart: 0Quantity:Price:$5.20Subtotal: -
MIKUNI Main Jet #440 - 4-Pack 4/042-440
MIKUNI
$5.20Fit Mikuni carburetors VM18 (clamp on), VM24-512, VM26-512, VM26-606, TMX Series and others that originally came with 4/042 main jets, Also fit several OE applications; check dimensions before ordering, Made in JapanKM4042440- SKU:
- KM4042440
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD TYPE:
- HEX HEAD
- JET SIZE:
- 440
- MATERIAL:
- BRASS
- OVERALL LENGTH:
- 12 MM (0,47')
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- FOR VM CARBURETORS
- OVERALL DIAMETER:
- 6,00 MM (0,24')
- OVERALL DIAMETER METRIC:
- 6.00 MM
- OVERALL LENGTH IMPERIAL:
- 0.47'
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- MAIN
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- PRODUCT NAME:
- JET
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$5.20Qty in Cart: 0Quantity:Price:$5.20Subtotal: -
MIKUNI Main Jet #450 - 4-Pack 4/042-450
MIKUNI
$14.56Fit Mikuni carburetors VM18 (clamp on), VM24-512, VM26-512, VM26-606, TMX Series and others that originally came with 4/042 main jets, Also fit several OE applications; check dimensions before ordering, Made in JapanKM4042450- SKU:
- KM4042450
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- FOR VM CARBURETORS
- JET SIZE:
- 450
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- 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
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- HEAD TYPE:
- HEX HEAD
- MATERIAL:
- BRASS
$14.56Qty in Cart: 0Quantity:Price:$14.56Subtotal: -
MOOSE RACING Torque Spacer - RM/LT250/500 10-300SK
MOOSE RACING
$41.95Simple but effective way to shift the torque curve to favor the low-end to mid-range band of the rev range, CNC-machined, eliminating interference problems when installing; includes gaskets and bolts, Insert spacer between cylinder and reed valve, Made...M56010300- SKU:
- M56010300
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- BASE COLOR:
- SILVER
- FEATURES:
- INCLUDES GASKETS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- INTAKE SPACER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TORQUE
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- COLOR/FINISH:
- SILVER
- MATERIAL:
- CNC-MACHINED
$41.95 -
MIKUNI Needle and Seat VM28/163-1.8
MIKUNI
$24.15Genuine Mikuni needle and seat assemblies provide reliable performance, Check application and size of needle and seat assembly before ordering, Made to the highest standards, Made in JapanVM2816318- SKU:
- VM2816318
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$24.15Qty in Cart: 0Quantity:Price:$24.15Subtotal: -
MIKUNI Needle and Seat VM28/511-1.5
MIKUNI
$24.15Genuine Mikuni needle and seat assemblies provide reliable performance, Check application and size of needle and seat assembly before ordering, Made to the highest standards, Made in JapanVM2851115- SKU:
- VM2851115
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$24.15Qty in Cart: 0Quantity:Price:$24.15Subtotal: -
MIKUNI Pilot Jet - 4-Pack BS30/96-55
MIKUNI
$5.20Fit OE applications that came with a (BS) CV Mikuni carburetors, Made in JapanKBS309655- SKU:
- KBS309655
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BASE COLOR:
- BRASS
- RIDING STYLE:
- STREET
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- PILOT
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- JET SIZE:
- 55
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
$5.20Qty in Cart: 0Quantity:Price:$5.20Subtotal: -
MIKUNI Air Jet #0.7 - 4-Pack BS30/97-0.7
MIKUNI
$14.55Fit Mikuni VM26-VM44 spigot mount, VM29 and VM33 smoothbore, RS and TM carburetors, Use for fine tuning for regulating fuel-air mixture, Air jet meters airflow to needle jet, Made in JapanKBS309707- SKU:
- KBS309707
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TYPE:
- AIR
- UNITS:
- 4 PACK
- MATERIAL:
- BRASS
- BASE COLOR:
- BRASS
- JET SIZE:
- 0.7
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$14.55Qty in Cart: 0Quantity:Price:$14.55Subtotal: -
MIKUNI Air Jet #1.0 - 4-Pack BS30/97-1.0
MIKUNI
$14.55Fit Mikuni VM26-VM44 spigot mount, VM29 and VM33 smoothbore, RS and TM carburetors, Use for fine tuning for regulating fuel-air mixture, Air jet meters airflow to needle jet, Made in JapanKBS309710- SKU:
- KBS309710
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BASE COLOR:
- BRASS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- JET SIZE:
- 1
- MATERIAL:
- BRASS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- AIR
- COLOR/FINISH:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$14.55Qty in Cart: 0Quantity:Price:$14.55Subtotal: -
MIKUNI Main Jet - #185 - 4-Pack N102221-185
MIKUNI
$14.55Check dimensions before ordering, For CV and Power Jet carburetors as well as other OE applications that originally came with a N102.221 main jet, Sold to dealer in 4-pack, Made in JapanKN102221185- SKU:
- KN102221185
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- BRASS
- MODEL:
- MIKUNI
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- WATERCRAFT
- JET SIZE:
- 185
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- MAIN
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
$14.55Qty in Cart: 0Quantity:Price:$14.55Subtotal: -
MIKUNI Main Jet #410 - 4-Pack 4/042-410
MIKUNI
$5.20Fit Mikuni carburetors VM18 (clamp on), VM24-512, VM26-512, VM26-606, TMX Series and others that originally came with 4/042 main jets, Also fit several OE applications; check dimensions before ordering, Made in JapanKM4042410- SKU:
- KM4042410
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- 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
- HEAD TYPE:
- HEX HEAD
- JET SIZE:
- 410
- MATERIAL:
- BRASS
- OVERALL LENGTH:
- 12 MM (0,47')
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 4 PACK
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- FEATURES:
- FOR VM CARBURETORS
- OVERALL DIAMETER IMPERIAL:
- 0.24'
- OVERALL LENGTH METRIC:
- 12 MM
- RIDING STYLE:
- ATV
$5.20Qty in Cart: 0Quantity:Price:$5.20Subtotal: -
MIKUNI Main Jet #720 - 4-Pack 4/042-720
MIKUNI
$5.20Fit Mikuni carburetors VM18 (clamp on), VM24-512, VM26-512, VM26-606, TMX Series and others that originally came with 4/042 main jets, Also fit several OE applications; check dimensions before ordering, Made in JapanKM4042720- SKU:
- KM4042720
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- 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
- PRODUCT NAME:
- JET
- RIDING STYLE:
- STREET
- HEAD TYPE:
- HEX HEAD
- JET SIZE:
- 720
- 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'
- RIDING STYLE:
- ATV
$5.20Qty in Cart: 0Quantity:Price:$5.20Subtotal: -
Samco Sport Vent Line Blue 3mm ID for Carbureted Vehicles USA-VT3B-2W-BL
SAMCO SPORT
$24.95The SAMCO SPORT Vent Line is a versatile solution for various automotive applications, including carburetor breathers, air pipes, and radiator overflow systems. With a sleek blue design and a flexible 10-foot length, this vent line is perfect for...07060152- SKU:
- 07060152
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
- BASE COLOR:
- BLUE
- OUTSIDE DIAMETER METRIC:
- 7 MM
- PRODUCT NAME:
- TUBING
- RIDING STYLE:
- UTV
- COLOR/FINISH:
- BLUE
- MATERIAL:
- SILICONE
- RIDING STYLE:
- STREET
- TYPE:
- VENT
- APPLICATION:
- CARBURETED
- INSIDE DIAMETER METRIC:
- 3.0 MM
- LENGTH IMPERIAL:
- 10'
- LENGTH METRIC:
- 305 CM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$24.95Qty in Cart: 0Quantity:Price:$24.95Subtotal: -
MIKUNI VM Series Carburetor - 26mm VM26-606
MIKUNI
$142.00Adjustment screws and enricher are on left side of carburetor unless noted, Round slide configuration offers great flow characteristics, Use Mikuni jets and parts for best results, Clamp type mounting unless noted via footnote, Made in Japan10020050- SKU:
- 10020050
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MAIN JET:
- 190 (4/042)
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- BASE COLOR:
- SILVER
- FEATURES:
- CLAMP-ON TYPE MOUNTING
- NEEDLE:
- 5E75
- PRODUCT NAME:
- VM ROUND SLIDE CARBURETOR
- SPIGOT MOUNTING OUTSIDE DIAMETER:
- 35
- CARBURETOR SIZE METRIC:
- 26.00 MM
- COLOR/FINISH:
- SILVER
- NEEDLE JET:
- O-0 (332 SERIES)
- NEEDLE VALVE:
- 2.5 (VM26/26)
- PILOT JET:
- 22.5 (M28/1001)
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- AIR JET:
- 0.5
- COLOR/FINISH:
- NATURAL
- RIDING STYLE:
- ATV
- SLIDE CUTAWAY:
- 1.5 (VM26/21)
$142.00Qty in Cart: 0Quantity:Price:$142.00Subtotal:
