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
-
BOYESEN Radiator Valve - RM125 RAD-21J
BOYESEN
$179.95If you're running a RM125 and leaving performance on the table, a restricted intake valve is likely the culprit. The BOYESEN Radiator Valve eliminates flow restrictions and ensures even fuel-air distribution across all intake ports, translating to...10080033- SKU:
- 10080033
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MATERIAL:
- CARBON FIBER
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve RAD-42D
BOYESEN
$179.95If you're serious about extracting maximum performance from your engine, intake charge distribution directly impacts your horsepower and throttle response. The BOYESEN Radiator Valve RAD-42D uses patented dual-stage reed technology to maintain flow...10080032- SKU:
- 10080032
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- TYPE:
- DUAL STAGE
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- UNITS:
- EACH
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - KX250 '04 RAD-12I
BOYESEN
$179.95If you're running a KX250 and want measurable gains in low-to-mid-range torque and throttle response, a quality radiator valve is non-negotiable. The Boyesen RAD-12I optimizes intake charge distribution across your cylinder, eliminating dead zones and...10080031- SKU:
- 10080031
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- TYPE:
- DUAL STAGE
- MATERIAL:
- CARBON FIBER
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$179.95 -
BOYESEN Radiator Valve - KX125 '04-'05 RAD-11K
BOYESEN
$179.95If you're running a KX125 and want noticeable gains in throttle response and mid-range torque, a Boyesen Radiator Valve is one of the most direct bolt-on upgrades available. This valve optimizes intake charge distribution across your cylinder, sharpening...10080030- SKU:
- 10080030
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- TYPE:
- DUAL STAGE
$179.95 -
BOYESEN Radiator Valve - KX85/100 RM100 RAD-10E
BOYESEN
$169.95If you're running a KX85/100 or RM100, intake efficiency directly impacts throttle response and peak horsepower. The BOYESEN Radiator Valve optimizes charge distribution across intake ports while maintaining consistent flow velocity, translating to...10080029- SKU:
- 10080029
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- TYPE:
- DUAL STAGE
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
BOYESEN Radiator Valve - CR250 '04 RAD-02H
BOYESEN
$179.95If you're running a CR250 and want immediate throttle response without sacrificing low-end torque, the Boyesen Radiator Valve is the bolt-on upgrade that delivers. By maintaining flow velocity through the intake charge and redirecting it evenly across...10080028- SKU:
- 10080028
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95 -
BOYESEN Radiator Valve - CR125 '04 RAD-01I
BOYESEN
$179.95If you're running a CR125 and want measurable gains in throttle response and mid-to-top-end horsepower, the Boyesen Radiator Valve is a proven intake modification that actually delivers. By optimizing intake charge distribution and maintaining flow...10080027- SKU:
- 10080027
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- CARBON FIBER
- TYPE:
- DUAL STAGE
$179.95 -
BOYESEN Pro Series Reed for RAD11J PSR-192
BOYESEN
$69.95If you're running a RAD11J and want measurable gains in throttle response and acceleration, the Boyesen Pro Series Reed delivers the responsiveness that separates competitive setups from the rest. The dual-stage design tracks piston speed changes with...10080014- SKU:
- 10080014
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- UNITS:
- SET
$69.95 -
BOYESEN Pro Series Reed for RAD10E PSR-213
BOYESEN
$56.95Reed valve performance directly impacts throttle response and peak power output on two-stroke engines—a sluggish reed setup costs you acceleration and consistency on the track. The BOYESEN Pro Series Reed leverages carbon fiber construction with their...10080013- SKU:
- 10080013
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CARBON FIBER
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REPLACEMENT REED FOR RAD10E
- TYPE:
- DUAL STAGE
- UNITS:
- SET
$56.95 -
BOYESEN Pro Series Reed for RAD02H PSR-201
BOYESEN
$69.95Reed valve performance directly impacts throttle response and acceleration—choose the wrong reed and you'll feel lag in the powerband. The BOYESEN Pro Series Reed delivers the responsiveness you need for competitive racing or high-performance riding,...10080012- SKU:
- 10080012
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- MATERIAL:
- CARBON FIBER
- UNITS:
- SET
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
$69.95 -
BOYESEN Pro Series Reed for RAD02G PSR-183
BOYESEN
$69.95If you're chasing faster throttle response and maximum acceleration on your RAD02G, reed quality directly impacts how quickly your engine responds to input. The Boyesen Pro Series Reed delivers precision responsiveness through its dual-stage design,...10080011- SKU:
- 10080011
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- PRO SERIES
$69.95 -
On Sale
BOYESEN Pro Series Reed for RAD01I PSR-199
BOYESEN
MSRP: $69.95Now: $45.00Was: $69.95Reed valve performance directly impacts throttle response and acceleration in 2-stroke engines, and the BOYESEN Pro Series delivers measurable gains through precision engineering. The dual-stage carbon fiber design responds instantly to piston speed...10080010- SKU:
- 10080010
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MATERIAL:
- CARBON FIBER
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
MSRP: $69.95Now: $45.00Was: $69.95 -
BOYESEN Pro Series Reed for RAD01H PSR-181
BOYESEN
$69.95Throttle response is everything in high-RPM applications, and a sluggish reed valve costs you acceleration and peak power. The Boyesen Pro Series Reed delivers the rapid intake dynamics your engine needs to maximize horsepower and torque across the...10080009- SKU:
- 10080009
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
$69.95 -
BOYESEN Radiator Valve - YZ250 '00-'04 RAD34I
BOYESEN
$179.95If you're running a carbureted two-stroke and leaving power on the table, your intake system is likely the culprit. The BOYESEN Radiator Valve optimizes charge distribution across your cylinder's intake ports, translating directly into sharper throttle...10080007- SKU:
- 10080007
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
$179.95 -
BOYESEN Pro Series Reed for RAD40 PSR-197
BOYESEN
$55.95A reed valve system is only as good as its ability to respond to your engine's demands—and the BOYESEN Pro Series PSR-197 delivers precision throttle response that translates directly to faster acceleration and more usable horsepower across the RPM range...10080006- SKU:
- 10080006
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CARBON FIBER
- MODEL:
- PRO SERIES
$55.95 -
ALL BALLS Fuel Pump Module - KTM/Husqvarna 47-1037
ALL BALLS
$284.65Pump draws less current than OEM pump while maintaining the same flow rate at working pressure, this reduces working temperatures and increases life of the unit., Restore lost performance or non-functioning fuel pump with this economical solution.,...10090131- SKU:
- 10090131
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- PRODUCT NAME:
- FUEL PUMP MODULE
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- UNITS:
- KIT
- BASE COLOR:
- GRAY
- BASE COLOR:
- WHITE
- RIDING STYLE:
- OFF-ROAD
$284.65 -
ALL BALLS Fuel Pump Module - KTM/Husqvarna 47-1038
ALL BALLS
$284.65Pump draws less current than OEM pump while maintaining the same flow rate at working pressure, this reduces working temperatures and increases life of the unit., Restore lost performance or non-functioning fuel pump with this economical solution.,...10090132- SKU:
- 10090132
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- BASE COLOR:
- GRAY
- BASE COLOR:
- WHITE
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- FUEL PUMP MODULE
- UNITS:
- KIT
$284.65 -
ALL BALLS Fuel Pump Module - KTM/Husqvarna 47-1039
ALL BALLS
$284.65Pump draws less current than OEM pump while maintaining the same flow rate at working pressure, this reduces working temperatures and increases life of the unit., Restore lost performance or non-functioning fuel pump with this economical solution.,...10090133- SKU:
- 10090133
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- BASE COLOR:
- GRAY
- BASE COLOR:
- WHITE
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- FUEL PUMP MODULE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REPLACEMENT
$284.65 -
ALL BALLS Fuel Pump Module - KTM/Husqvarna 47-1040
ALL BALLS
$284.65Pump draws less current than OEM pump while maintaining the same flow rate at working pressure, this reduces working temperatures and increases life of the unit., Restore lost performance or non-functioning fuel pump with this economical solution.,...10090134- SKU:
- 10090134
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- BASE COLOR:
- GRAY
- BASE COLOR:
- WHITE
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REPLACEMENT
- PRODUCT NAME:
- FUEL PUMP MODULE
- UNITS:
- KIT
$284.65 -
ALL BALLS Fuel Pump Rebuild Kit 47-2036
ALL BALLS
$98.68Includes all necessary pump, filter, hose(s), clamp(s) and wiring harness as necessary per model, Economical solution for restoring lost performance or non-performing fuel pump, Includes all necessary components to rebuild the OEM fuel pump module, Comes...10090071- SKU:
- 10090071
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- FUEL PUMP REBUILD KIT
- RIDING STYLE:
- OFF-ROAD
$98.68
