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 - KX125 '03 RAD-11J
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD11J- SKU:
- RAD11J
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
$179.95 -
BOYESEN Radiator Valve - KX 125 '00 RAD11G
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD11G- SKU:
- RAD11G
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- UNITS:
- EACH
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - KX125 '99 RAD11F
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD11F- SKU:
- RAD11F
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95 -
BOYESEN Radiator Valve - KX125 '98 RAD11E
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD11E- SKU:
- RAD11E
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- COLOR/FINISH:
- SILVER
$179.95 -
BOYESEN Radiator Valve - KX125 '95-'97 RAD11D
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD11D- SKU:
- RAD11D
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - KX125 RAD-11A
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD11A- SKU:
- RAD11A
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- SILVER
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95 -
BOYESEN Radiator Valve - KX125 '88-'91 RAD-11
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD11- SKU:
- RAD11
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MODEL:
- RAD VALVE
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- SILVER
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95 -
BOYESEN Radiator Valve - KX80 '91-'97 RAD10A
BOYESEN
$169.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD10A- SKU:
- RAD10A
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$169.95 -
BOYESEN Radiator Valve - Honda ATV RAD04A
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD04A- SKU:
- RAD04A
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- ATV
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95 -
BOYESEN Radiator Valve - CR500 '90-'01 RAD03A
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD03A- SKU:
- RAD03A
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- TYPE:
- DUAL STAGE
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - CR250 '02 RAD-02F
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD02F- SKU:
- RAD02F
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
$179.95 -
BOYESEN Radiator Valve - CR250 '00 RAD02D
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD02D- SKU:
- RAD02D
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- COLOR/FINISH:
- SILVER
- UNITS:
- EACH
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - CR250 '99 RAD02C
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD02C- SKU:
- RAD02C
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- SILVER
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - CR250 '86-'98 RAD02B
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD02B- SKU:
- RAD02B
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MODEL:
- RAD VALVE
- UNITS:
- EACH
$179.95 -
BOYESEN Radiator Valve - CR125 '02 RAD-01G
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD01G- SKU:
- RAD01G
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - CR125 '01 RAD01F
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD01F- SKU:
- RAD01F
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - CR125 '00 RAD01E
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD01E- SKU:
- RAD01E
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95 -
BOYESEN Radiator Valve - CR125 '92-'97 RAD01B
BOYESEN
$179.95Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports, Provide quicker, sharper throttle response and more horsepower throughout rpm range, Specially-designed reed cage holds Boyesen's patented...RAD01B- SKU:
- RAD01B
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- COLOR/FINISH:
- SILVER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
$179.95 -
BOYESEN Radiator Valve - CR125 '88-'91 RAD-01A
BOYESEN
$179.95The BOYESEN Radiator Valve optimizes intake charge distribution across all cylinders, delivering sharper throttle response and measurable horsepower gains throughout your RPM range. By maintaining consistent flow velocity and redirecting the charge...RAD01- SKU:
- RAD01
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Pro Series Reed - CR125 PRO-98
BOYESEN
$62.95If you're chasing faster throttle response and peak horsepower on your CR125, reed quality directly impacts your power delivery. The Boyesen Pro Series uses a proven dual-stage design that adapts instantly to piston speed changes, giving you the...PRO98- SKU:
- PRO98
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- CARBON FIBER
- MODEL:
- PRO SERIES
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REED PETAL
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal:
