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 Needle and Seat N149040-28
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 JapanN14904028- SKU:
- N14904028
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$24.15 -
MIKUNI Coupling Kit for Duals MK-BN/001
MIKUNI
$52.95For dual application of Mikuni carburetorsMKBN001- SKU:
- MKBN001
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- JET KIT
- TYPE:
- CARBURETOR
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- RIDING STYLE:
- WATERCRAFT
$52.95 -
MIKUNI Standard BN Carburetor Series Repair Kit MK-BN38/44
MIKUNI
$40.99Diaphragm repair kit for all standard Mikuni BN series carburetors (not Super BN) - six-screw pump coverMKBN3844- SKU:
- MKBN3844
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
- PRODUCT NAME:
- JET KIT
- TYPE:
- CARBURETOR
$40.99 -
MIKUNI Super BN Series Carburetor Rebuild Kit MK-BN38/44 SPR
MIKUNI
$85.95All parts needed for complete rebuild (except needle valve)MKBN3844SPR- SKU:
- MKBN3844SPR
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- JET KIT
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
- TYPE:
- CARBURETOR
$85.95 -
MIKUNI Super/HP Carburetor Series Needle Valve Kit MK-BN44 NV 2
MIKUNI
$25.99Super BN kits fit either 38 or 44/46mm Super BN and high-performance Super BN carbs, Kit reduces pop-off and increases fuel flow for high-performance applications, 2.5 needle valve and 80g + 2.3 N-S and 65g spring, Made in JapanMKBN3844SPR2- SKU:
- MKBN3844SPR2
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- NEEDLE VALVE KIT
- RIDING STYLE:
- WATERCRAFT
- SPRING RATE METRIC:
- 80.00 G
- UNITS:
- KIT
$25.99 -
MIKUNI Power Jet Kit with Jets MK-406
MIKUNI
$26.99Includes all parts needed to complete the conversion and three type N102/221 power jets (80, 100, 120) to get the tuning operation started, Converts a VM-type Mikuni carb to a Power Jet carb (sizes 30mm-44mm), Made in JapanVMPJK- SKU:
- VMPJK
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- JET KIT
- RIDING STYLE:
- ATV
$26.99 -
MIKUNI Needle Jet VM34/05-O-6
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...159O6- SKU:
- 159O6
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- JET SIZE:
- O-6
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
$15.49 -
MIKUNI Needle Jet VM34/05-O-8
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...159O8- SKU:
- 159O8
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- JET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- SNOW
- JET SIZE:
- O-8
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$15.49 -
MIKUNI Needle Jet 990-793-004-P-0
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...159P0- SKU:
- 159P0
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- TYPE:
- NEEDLE
- UNITS:
- EACH
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- JET SIZE:
- P-0
$15.49 -
MIKUNI Needle Jet 990-793-004-P-2
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...159P2- SKU:
- 159P2
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- JET SIZE:
- P-2
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-004-P-4
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...159P4- SKU:
- 159P4
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- SNOW
- JET SIZE:
- P-4
- PRODUCT NAME:
- JET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-004-P-5
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...159P5- SKU:
- 159P5
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- TYPE 159
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- JET SIZE:
- P-5
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
$15.49Qty in Cart: 0Quantity:Price:$15.49Subtotal: -
MIKUNI Needle Jet 990-793-004-P-6
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...159P6- SKU:
- 159P6
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- JET SIZE:
- P-6
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
$15.49Qty in Cart: 0Quantity:Price:$15.49Subtotal: -
MIKUNI Needle Jet 990-793-004-Q-0
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...159Q0- SKU:
- 159Q0
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MODEL:
- TYPE 159
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- JET SIZE:
- Q-0
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- FEATURES:
- FOR VM 30 MM - 36 MM SPIGOT
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
$15.49 -
MIKUNI Needle Jet 990-793-003-P-0
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...166P0- SKU:
- 166P0
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- JET SIZE:
- P-0
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- UNITS:
- EACH
- FEATURES:
- FOR VM38 MM SPIGOT
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$15.49 -
MIKUNI Needle Jet 990-793-003-P-2
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...166P2- SKU:
- 166P2
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MODEL:
- TYPE 166
- FEATURES:
- FOR VM38 MM SPIGOT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- MATERIAL:
- BRASS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- JET SIZE:
- P-2
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ATV
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-003-P-4
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...166P4- SKU:
- 166P4
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- MODEL:
- TYPE 166
- RIDING STYLE:
- ATV
- JET SIZE:
- P-4
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- FEATURES:
- FOR VM38 MM SPIGOT
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
$15.49 -
MIKUNI Needle Jet 990-793-003-P-5
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...166P5- SKU:
- 166P5
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- P-5
- PRODUCT NAME:
- JET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- FEATURES:
- FOR VM38 MM SPIGOT
- MODEL:
- TYPE 166
- TYPE:
- NEEDLE
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- UNITS:
- EACH
$15.49 -
MIKUNI Needle Jet 990-793-003-P-6
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...166P6- SKU:
- 166P6
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MATERIAL:
- BRASS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- P-6
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- JET
- RIDING STYLE:
- UTV
- TYPE:
- NEEDLE
- FEATURES:
- FOR VM38 MM SPIGOT
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
$15.49 -
MIKUNI Needle Jet 990-793-003-P-8
MIKUNI
$15.49Inside diameter increases in size as size’s code increases alphabetically and numerically, Genuine Mikuni needle jets will have series and size stamping for identification, Needle jets allow a great way for tuning carb at 1/4-3/4 turn throttle, Made in...166P8- SKU:
- 166P8
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- FOR VM38 MM SPIGOT
- RIDING STYLE:
- OFF-ROAD
- JET SIZE:
- P-8
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- JET
- TYPE:
- NEEDLE
- UNITS:
- EACH
- MATERIAL:
- BRASS
- MODEL:
- TYPE 166
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
$15.49
