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
-
UNI FILTER Filter - YZ80 NU-3229ST
UNI FILTER
$35.95The UNI FILTER NU-3229ST delivers superior airflow and filtration for your YZ80, engineered to maximize engine breathing while reliably stopping dirt and contaminants. Unlike disposable filters, this two-stage design cleans and reuses indefinitely—saving...NU3229ST- SKU:
- NU3229ST
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- BASE COLOR:
- RED
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- COMPETITION
- TYPE:
- STAGE II
- FILTER MEDIA STYLE:
- DUAL-LAYER
- FILTER SHAPE:
- CYLINDER
- UNITS:
- EACH
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER SHAPE:
- TAPERED
- MODEL:
- ULTRA-SEAL
$35.95 -
UNI FILTER Air Filter - Yamaha NU-3238ST
UNI FILTER
$42.95The UNI FILTER Air Filter (NU-3238ST) delivers superior airflow while maintaining reliable dirt filtration—critical for maintaining engine responsiveness and longevity on your Yamaha. Unlike disposable OEM filters, this reusable design saves money over...NU3238ST- SKU:
- NU3238ST
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- FILTER MEDIA MATERIAL:
- FOAM
- MODEL:
- ULTRA-SEAL
- PRODUCT NAME:
- AIR FILTER
- BASE COLOR:
- RED
- FILTER SHAPE:
- OVAL
- FEATURES:
- WASHABLE
- RIDING STYLE:
- STREET
- TYPE:
- STAGE II
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- FILTER MEDIA STYLE:
- DUAL-LAYER
$42.95 -
UNI FILTER Filter - TTR-125 NU-3242ST
UNI FILTER
$29.95OEM air filters restrict airflow and require replacement every season—UNI Filter's reusable design eliminates that cycle while delivering superior filtration and engine breathing. The two-stage construction allows complete disassembly for thorough...NU3242ST- SKU:
- NU3242ST
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- BASE COLOR:
- RED
- FILTER MEDIA MATERIAL:
- FOAM
- PRODUCT NAME:
- AIR FILTER
- MODEL:
- ULTRA-SEAL
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- WASHABLE
- FILTER MEDIA STYLE:
- DUAL-LAYER
- FILTER SHAPE:
- ROUND
- STYLE:
- COMPETITION
- TYPE:
- STAGE II
- UNITS:
- EACH
$29.95 -
UNI FILTER Filter - Yamaha YZ85 NU-3243ST
UNI FILTER
$33.95The UNI FILTER NU-3243ST delivers superior airflow while maintaining exceptional dirt-stopping capability—critical for YZ85 riders who demand responsive engine performance in dusty riding conditions. Unlike disposable filters, this two-stage design is...NU3243ST- SKU:
- NU3243ST
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- BASE COLOR:
- RED
- FILTER MEDIA MATERIAL:
- FOAM
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- RED
- FEATURES:
- WASHABLE
- FILTER SHAPE:
- ROUND
- TYPE:
- STAGE II
- UNITS:
- EACH
- FILTER MEDIA STYLE:
- DUAL-LAYER
- MODEL:
- UNI-SEAL
$33.95 -
UNI FILTER Filter - TTR-90 NU-3250ST
UNI FILTER
$21.95The UNI FILTER TTR-90 NU-3250ST delivers superior airflow without compromising filtration—critical when you're chasing performance gains at the track or on the street. Unlike disposable filters that cost money and create waste, this reusable design...NU3250ST- SKU:
- NU3250ST
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- WASHABLE
- STYLE:
- COMPETITION
- TYPE:
- STAGE II
- UNITS:
- EACH
- FILTER MEDIA STYLE:
- DUAL-LAYER
- FILTER SHAPE:
- UNIQUE
- MODEL:
- UNI-SEAL
- BASE COLOR:
- RED
- FILTER MEDIA MATERIAL:
- FOAM
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
$21.95 -
UNI FILTER Filter - WR250/450F NU-3251ST
UNI FILTER
$37.95Stock air filters restrict flow and require frequent replacement—the UNI FILTER NU-3251ST eliminates both problems. This two-stage design delivers maximum airflow while trapping dirt more effectively than OEM filters, keeping your WR250/450F's engine...NU3251ST- SKU:
- NU3251ST
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MODEL:
- ULTRA-SEAL
- PRODUCT NAME:
- AIR FILTER
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER MEDIA STYLE:
- DUAL-LAYER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- STYLE:
- COMPETITION
- BASE COLOR:
- RED
- FILTER SHAPE:
- ROUND
- TYPE:
- STAGE II
- UNITS:
- EACH
$37.95 -
UNI FILTER Filter - Honda XR/CRF NU-4131ST
UNI FILTER
$11.95Stock air filters restrict your engine's breathing and require frequent replacement—costing you money and performance. The UNI FILTER NU-4131ST delivers superior airflow while trapping more dirt, letting your Honda XR/CRF engine pull cleaner air and run...NU4131ST- SKU:
- NU4131ST
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- STYLE:
- COMPETITION
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER MEDIA STYLE:
- DUAL-LAYER
- MODEL:
- UNI-SEAL
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- RED
- FILTER SHAPE:
- ROUND
- TYPE:
- STAGE II
- UNITS:
- EACH
$11.95 -
UNI FILTER Filter - DRZ/KLX125 NU-2484ST
UNI FILTER
$31.95Stock air filters restrict airflow and require frequent replacement—wasting money and potentially compromising engine performance. The UNI FILTER NU-2484ST delivers superior filtration and airflow in a reusable design that pays for itself within a few...10110236- SKU:
- 10110236
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- RED
- FILTER SHAPE:
- ROUND
- PRODUCT NAME:
- AIR FILTER
- STYLE:
- COMPETITION
- TYPE:
- STAGE II
- UNITS:
- EACH
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER MEDIA STYLE:
- DUAL-LAYER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- UNI-SEAL
$31.95 -
UNI FILTER Filter - KTM NU-1414ST
UNI FILTER
$14.95A quality air filter is fundamental to engine performance—restricting airflow costs you horsepower and throttle response. The UNI FILTER NU-1414ST delivers maximum airflow while maintaining superior dirt-stopping efficiency, engineered specifically for...10110237- SKU:
- 10110237
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FILTER SHAPE:
- RECTANGULAR
- FEATURES:
- WASHABLE
- FILTER MEDIA STYLE:
- DUAL-LAYER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- COMPETITION
- TYPE:
- STAGE II
- UNITS:
- EACH
- BASE COLOR:
- RED
- FILTER MEDIA MATERIAL:
- FOAM
- MODEL:
- UNI-SEAL
- PRODUCT NAME:
- AIR FILTER
$14.95 -
UNI FILTER Foam Filter - Black BF-4
UNI FILTER
$20.95Custom air filtration shouldn't force you into off-the-shelf compromises. The UNI FILTER Foam Filter - Black BF-4 gives you precision-engineered foam sheets in multiple densities, letting you fabricate a filter that matches your exact engine bay layout...10111025- SKU:
- 10111025
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- FILTER MEDIA STYLE:
- FINE
- PRODUCT NAME:
- FOAM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AIR FILTER
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- FOAM
- PANEL OUTSIDE DIMENSIONS (LENGTH X WIDTH) IMPERIAL:
- 15.98' X 12.01'
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- BASE COLOR:
- BLACK
$20.95 -
UNI FILTER Foam Filter - Red BF-5
UNI FILTER
$20.95If you're building a custom or vintage air intake system, you need a filter solution that matches your fabrication—not one that forces you to adapt. The UNI FILTER Foam Filter Red BF-5 gives you sheets of varying foam densities to design and cut an air...10111026- SKU:
- 10111026
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- PANEL OUTSIDE DIMENSIONS (LENGTH X WIDTH) IMPERIAL:
- 15.98' X 12.01'
- PRODUCT NAME:
- FOAM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- BASE COLOR:
- RED
- FILTER MEDIA STYLE:
- COARSE
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- FILTER MEDIA MATERIAL:
- FOAM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AIR FILTER
$20.95 -
UNI FILTER Filtered Air Vents - 6 Pack UFV-6
UNI FILTER
$15.95Cold air intake systems depend on consistent, clean airflow to deliver maximum performance gains. These UNI FILTER air vents increase the volume of pre-filtered air reaching your airbox, reducing restriction and allowing your engine to breathe more...UFV6- SKU:
- UFV6
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AIR FILTER
- FEATURES:
- WASHABLE
- FILTER SHAPE:
- ROUND
- PRODUCT NAME:
- AIR VENT
- BASE COLOR:
- BLACK
- FILTER MEDIA MATERIAL:
- FOAM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- UNITS:
- 6 PACK
$15.95 -
PARTS UNLIMITED Watercraft Primer Kit PD820005
PARTS UNLIMITED
$34.36Cold starts on watercraft can be unpredictable without a reliable primer system. The PARTS UNLIMITED Watercraft Primer Kit PD820005 ensures fuel delivery to your carburetor before ignition, eliminating multiple crank attempts and potential flooded...PD820005- SKU:
- PD820005
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- PRIMER KIT
- STYLE:
- SINGLE CARBURETOR
- RIDING STYLE:
- WATERCRAFT
- STYLE:
- MIKUNI
- UNITS:
- KIT
$34.36 -
PARTS UNLIMITED Keihin CDK40 Carburetor Primer Kit PD820006
PARTS UNLIMITED
$43.08Cold starts in marine environments demand reliable fuel delivery, and a compromised primer system leaves you stranded. The PARTS UNLIMITED Keihin CDK40 Carburetor Primer Kit ensures consistent fuel priming on every ignition, eliminating hard-start...PD820006- SKU:
- PD820006
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
- STYLE:
- KEIHIN
- PRODUCT NAME:
- PRIMER KIT
- STYLE:
- SINGLE CARBURETOR
$43.08Qty in Cart: 0Quantity:Price:$43.08Subtotal: -
PARTS UNLIMITED Dual Mikuni Primer Kit PD820007
PARTS UNLIMITED
$45.71Stock chokeshaft systems restrict airflow and complicate cold-start procedures on carbureted engines. The PARTS UNLIMITED Dual Mikuni Primer Kit eliminates this restriction with a purpose-built conversion that delivers consistent fuel delivery and...PD820007- SKU:
- PD820007
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- WATERCRAFT
- STYLE:
- MIKUNI
- STYLE:
- DUAL CARBURETOR
- UNITS:
- KIT
- PRODUCT NAME:
- PRIMER KIT
$45.71 -
PARTS UNLIMITED Dual Keihin Primer Kit PD820008
PARTS UNLIMITED
$45.71Restrictive stock choke systems rob your carburetors of optimal airflow, limiting throttle response and overall engine performance. This primer kit eliminates that constraint by removing the stock chokeshaft and plate entirely, delivering unrestricted...PD820008- SKU:
- PD820008
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- PRIMER KIT
- STYLE:
- DUAL CARBURETOR
- UNITS:
- KIT
- RIDING STYLE:
- WATERCRAFT
- STYLE:
- KEIHIN
$45.71Qty in Cart: 0Quantity:Price:$45.71Subtotal: -
PARTS UNLIMITED Triple Mikuni Primer Kit PD820009
PARTS UNLIMITED
$41.90Stock chokeshaft systems restrict airflow and create unnecessary complexity in carburetor tuning. This primer kit eliminates that restriction by removing the stock choke entirely, giving you cleaner throttle response and easier cold-start operation. If...PD820009- SKU:
- PD820009
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- WATERCRAFT
- STYLE:
- MIKUNI
- STYLE:
- TRIPLE CARBURETOR
- PRODUCT NAME:
- PRIMER KIT
- UNITS:
- KIT
$41.90 -
PARTS UNLIMITED Triple Keihin Primer Kit PD820010
PARTS UNLIMITED
$48.93If you're running triple Keihin carbs, your stock chokeshaft and plate are restricting airflow and costing you power. Removing this antiquated restriction system unlocks the full potential of your carb setup while simplifying tuning and maintenance. This...PD820010- SKU:
- PD820010
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- PRIMER KIT
- UNITS:
- KIT
- STYLE:
- KEIHIN
- RIDING STYLE:
- WATERCRAFT
- STYLE:
- TRIPLE CARBURETOR
$48.93 -
PARTS UNLIMITED Plunger Primer Kit 7000
PARTS UNLIMITED
$42.52Manual fuel priming is essential for reliable cold starts and carburetor maintenance—especially when you've drained your fuel system or swapped carburetors. The PARTS UNLIMITED Plunger Primer Kit 7000 eliminates the guesswork by delivering controlled...7000- SKU:
- 7000
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BASE COLOR:
- BLACK
- RIDING STYLE:
- SNOW
- STYLE:
- SINGLE CARBURETOR
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- PLUNGER
- STYLE:
- DASH MOUNT
- TYPE:
- PRIMER KIT
- STYLE:
- DUAL CARBURETOR
- UNITS:
- KIT
$42.52Qty in Cart: 0Quantity:Price:$42.52Subtotal: -
On Sale
PRO DESIGN Pro Flow Filter Kit - RZR900 PD 248
PRO DESIGN
MSRP: $289.95Now: $186.00Was: $289.95The stock airbox on your RZR900 is robbing you of power through unnecessary restriction. This PRO DESIGN Pro Flow Filter Kit eliminates that bottleneck with flow-bench-engineered design, delivering measurable gains in throttle response and overall engine...10112863- SKU:
- 10112863
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
MSRP: $289.95Now: $186.00Was: $289.95
