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 Single-Stage Reed - Carbon - KTM 250/300/360/380 SSC042
BOYESEN
$50.95Reed valves are critical to two-stroke engine efficiency, and worn or suboptimal reeds directly kill your power delivery across the RPM band. The BOYESEN Single-Stage Carbon Reed is engineered to...SSC042- SKU:
- SSC042
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CARBON
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- REED PETAL
- UNITS:
- SET
$50.95Qty in Cart: 0Quantity:Price:$50.95Subtotal: -
BOYESEN Single-Stage Reed - Carbon - KTM 125/200 SSC041
BOYESEN
$50.95Reed valve performance directly impacts your engine's ability to seal combustion cycles and maintain peak power delivery across the RPM band. The BOYESEN Single-Stage Reed in carbon construction...SSC041- SKU:
- SSC041
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- CARBON
- MODEL:
- SUPER STOCK
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REED PETAL
- UNITS:
- SET
$50.95 -
BOYESEN Single-Stage Reed - Carbon - KTM 50/65SX SSC040
BOYESEN
$39.95Reed valves are critical to your two-stroke's intake efficiency—worn or suboptimal reeds directly rob you of power and throttle response across the entire RPM band. The Boyesen SSC040 carbon reeds...SSC040- SKU:
- SSC040
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MODEL:
- SUPER STOCK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
- MATERIAL:
- CARBON
- PRODUCT NAME:
- REED PETAL
$39.95Qty in Cart: 0Quantity:Price:$39.95Subtotal: -
BOYESEN Radiator Valve - RM250 '93 RAD24A
BOYESEN
$179.95The Boyesen Radiator Valve optimizes intake charge distribution to your RM250's cylinder, translating into sharper throttle response and measurable horsepower gains across the entire rpm band. By...RAD24A- SKU:
- RAD24A
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- TYPE:
- DUAL STAGE
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - RM250 '90-'92 RAD-24
BOYESEN
$179.95If you're running a RM250 two-stroke, intake charge distribution directly impacts throttle response and mid-range power delivery. The Boyesen Radiator Valve optimizes flow velocity through the intake...RAD24- SKU:
- RAD24
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- 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 RM125 '01 RAD21G
BOYESEN
$179.95The Boyesen Radiator Valve optimizes intake charge distribution across your RM125's cylinder head, eliminating dead zones that rob you of peak horsepower. By maintaining consistent flow velocity...RAD21G- SKU:
- RAD21G
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 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 - RM125 RAD21F
BOYESEN
$179.95If you're serious about extracting maximum performance from your RM125, the Boyesen Radiator Valve is a straightforward way to gain noticeable gains in throttle response and mid-to-top-end horsepower...RAD21F- SKU:
- RAD21F
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- COLOR/FINISH:
- SILVER
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - RM125 '92-'93 RAD-21A
BOYESEN
$179.95If you're running a RM125 two-stroke, intake charge distribution directly impacts how your engine responds and produces power across the rpm band. The Boyesen Radiator Valve optimizes flow velocity...RAD21A- SKU:
- RAD21A
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- 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 - RM80 '94-'00 RAD20
BOYESEN
$169.95Stock intake manifolds compromise flow velocity and throttle response—the Boyesen Radiator Valve fixes both. By maintaining charge velocity through the valve and redirecting intake flow for even...RAD20- SKU:
- RAD20
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MATERIAL:
- ALUMINUM
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
$169.95 -
BOYESEN Radiator Valve - KDX200/220 RAD14XA
BOYESEN
$179.95If you're running a KDX200 or KDX220, the Boyesen Radiator Valve is one of the most direct ways to unlock sharper throttle response and measurable horsepower gains across your entire RPM range. By...RAD14XA- SKU:
- RAD14XA
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MODEL:
- RAD VALVE
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- REED CAGE ASSEMBLY
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Pro Series Reed for RAD42 PSR23
BOYESEN
$64.95Reed valve performance directly impacts throttle response and acceleration in two-stroke engines—a sluggish reed setup costs you milliseconds and measurable horsepower. The Boyesen Pro Series PSR23...PRO23- SKU:
- PRO23
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- CARBON FIBER
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REED PETAL
- UNITS:
- SET
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
BOYESEN Pro Series Reed for RAD34B PSR20
BOYESEN
$64.95The Boyesen Pro Series Reed delivers measurable gains in throttle response and acceleration by precisely timing intake cycles to match piston speed—critical for two-stroke engines where reed timing...PRO20- SKU:
- PRO20
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- REED PETAL
- MATERIAL:
- CARBON FIBER
- BASE COLOR:
- YELLOW
- UNITS:
- SET
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
$64.95 -
BOYESEN Pro Series Reed - KX250 '03 PRO-193
BOYESEN
$62.95If you're running a KX250 and want measurable gains in throttle response and low-end acceleration, your reed valve design is doing the heavy lifting. The Boyesen Pro Series Reed uses a dual-stage...PRO193- SKU:
- PRO193
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- MATERIAL:
- CARBON FIBER
- UNITS:
- SET
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- REED PETAL
- RIDING STYLE:
- OFF-ROAD
$62.95 -
BOYESEN Pro Series Reed - KX125 '03 PRO-191
BOYESEN
$62.95If you're serious about extracting maximum power from your KX125, reed quality directly impacts throttle response and acceleration off the line. The Boyesen Pro Series delivers the quick intake...PRO191- SKU:
- PRO191
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
BOYESEN Pro Series Reed - RM250 '03 PRO-189
BOYESEN
$62.95If you're running a RM250 two-stroke, your reed valve design directly impacts throttle response, acceleration, and peak horsepower. The Boyesen Pro Series Reed eliminates lag and inconsistency by...PRO189- SKU:
- PRO189
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- PRO SERIES
- BASE COLOR:
- YELLOW
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
BOYESEN Pro Series Reed for RAD12C PSR108
BOYESEN
$64.95The BOYESEN Pro Series Reed delivers the throttle response precision that separates competitive advantage from the competition. By combining a responsive carbon fiber top reed with a reinforced...PRO108- SKU:
- PRO108
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
BOYESEN Pro Series Reed for RAD-24E PSR106
BOYESEN
$64.95A reed valve that actually delivers measurable performance gains, the BOYESEN Pro Series responds instantly to throttle input by precisely matching piston speed changes—eliminating the sluggish...PRO106- SKU:
- PRO106
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- MATERIAL:
- CARBON FIBER
- UNITS:
- SET
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- REED PETAL
- RIDING STYLE:
- OFF-ROAD
$64.95 -
On Sale
BOYESEN Pro Series Reed for RAD21D PSR105
BOYESEN
MSRP: $64.95Now: $42.00Was: $64.95A reed valve is your engine's gatekeeper—it controls the precise timing of fuel and air mixture entering the combustion chamber, directly impacting throttle response and power delivery. The Boyesen...PRO105- SKU:
- PRO105
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- REED PETAL
- MATERIAL:
- CARBON FIBER
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
MSRP: $64.95Now: $42.00Was: $64.95Qty in Cart: 0Quantity:Price:MSRP: $64.95Now: $42.00Was: $64.95Subtotal: -
BOYESEN Pro Series Reed - KTM PSR102
BOYESEN
$64.95Reed valve performance directly impacts throttle response and acceleration in 2-stroke engines—a sluggish reed design costs you both horsepower and lap time. The Boyesen Pro Series Reed delivers the...PRO102- SKU:
- PRO102
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- CARBON FIBER
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
BOYESEN Pro Series Reed for RAD-01C PSR100
BOYESEN
$64.95If you're chasing peak throttle response and acceleration, reed valve performance is non-negotiable—and the BOYESEN Pro Series Reed delivers the speed and precision you need to outpace the...PRO100- SKU:
- PRO100
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REPLACEMENT REED FOR RAD01B/01C
- TYPE:
- DUAL STAGE
- MATERIAL:
- CARBON FIBER
- UNITS:
- SET
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal:
