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 - KX125 '03 SSC111
BOYESEN
$50.95A worn or suboptimal reed system directly restricts your KX125's ability to breathe efficiently across the RPM band—costing you throttle response and peak power. The Boyesen SSC111 Carbon Single-Stage Reed delivers consistent airflow dynamics and...SSC111- SKU:
- SSC111
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
- MATERIAL:
- CARBON
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- REED PETAL
$50.95 -
BOYESEN Single-Stage Reed - Carbon - Honda Mx/ATV SSC102
BOYESEN
$50.95Reed valves are critical to your snowmobile's intake efficiency—a worn or suboptimal set directly limits throttle response and peak power across the entire RPM band. The Boyesen SSC102 carbon reeds are engineered to OEM specifications while delivering...SSC102- SKU:
- SSC102
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MODEL:
- SUPER STOCK
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
- MATERIAL:
- CARBON
- PRODUCT NAME:
- REED PETAL
- RIDING STYLE:
- UTV
$50.95Qty in Cart: 0Quantity:Price:$50.95Subtotal: -
BOYESEN Single-Stage Reed - Carbon - CR125 '01-'02 SSC101
BOYESEN
$50.95Reed valves are critical to your CR125's intake efficiency—worn or poorly matched reeds directly reduce throttle response and midrange power. The Boyesen SSC101 carbon reeds are engineered to OEM specifications, delivering consistent performance across...SSC101- SKU:
- SSC101
- 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 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 restore—or exceed—OEM performance while offering superior...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 offers superior durability and responsiveness compared to...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 are engineered to OEM specifications while delivering...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 maintaining consistent flow velocity through the valve and...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 tract, ensuring an even charge distribution across all...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
$179.95 -
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 through a precisely engineered reed system, this valve...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. By optimizing intake charge velocity and distribution...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
$179.95 -
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 and redirects the intake charge evenly to your ports,...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
$179.95 -
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 distribution across ports, this part delivers sharper...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
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
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 optimizing intake charge distribution and maintaining...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 combines carbon fiber rigidity with a dual-stage design...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: -
On Sale
BOYESEN Pro Series Reed for RAD41 PSR22
BOYESEN
MSRP: $64.95Now: $42.00Was: $64.95Reed valve performance directly impacts your engine's responsiveness and power delivery, making quality construction non-negotiable for serious racers and tuners. The Boyesen Pro Series Reed combines advanced carbon fiber materials with proven dual-stage...PRO22- SKU:
- PRO22
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- MODEL:
- PRO SERIES
- BASE COLOR:
- YELLOW
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- UNITS:
- SET
MSRP: $64.95Now: $42.00Was: $64.95Qty in Cart: 0Quantity:Price:MSRP: $64.95Now: $42.00Was: $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 directly impacts horsepower and torque output. If you're...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 carbon fiber and fiberglass construction that tracks...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 response your engine demands, with a proven dual-stage...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
$62.95 -
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 pairing a high-tech carbon fiber top reed with a...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
$62.95 -
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 fiberglass/epoxy bottom reed, this two-stage design...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:
