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 Power Wing - CRF150R '07-'20 PW-20
BOYESEN
$99.95If you're running a CRF150R and serious about extracting every bit of performance from your engine, the BOYESEN Power Wing is a straightforward bolt-on solution that delivers measurable gains in horsepower and torque. By optimizing the fuel delivery at...10500167- SKU:
- 10500167
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- BASE COLOR:
- GOLD
- PRODUCT NAME:
- FUEL ATOMIZER
- COLOR/FINISH:
- GOLD
- MODEL:
- POWERWING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$99.95Qty in Cart: 0Quantity:Price:$99.95Subtotal: -
BOYESEN Radiator Valve - YZ250/X RAD-34J
BOYESEN
$179.95If you're running a YZ250/X and want sharper throttle response with measurable power gains across the RPM range, the BOYESEN Radiator Valve is a direct bolt-on upgrade that improves intake charge distribution without requiring machine work. The patented...10080116- SKU:
- 10080116
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 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 - YZ125 '05-'20 RAD-33J
BOYESEN
$179.95The BOYESEN Radiator Valve optimizes intake charge distribution across your YZ125's cylinder, delivering sharper throttle response and measurable horsepower gains throughout the entire RPM range. By maintaining consistent flow velocity through the valve...10080115- SKU:
- 10080115
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- UNITS:
- EACH
- TYPE:
- DUAL STAGE
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - KX250 '05-'07 RAD-12J
BOYESEN
$179.95The BOYESEN Radiator Valve optimizes intake charge distribution across your KX250's combustion chamber, delivering sharper throttle response and measurable horsepower gains throughout the entire RPM range. By maintaining flow velocity through the valve...10080113- SKU:
- 10080113
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
$179.95 -
BOYESEN Radiator Valve - CR250 '05-'07 RAD-02I
BOYESEN
$179.95The BOYESEN Radiator Valve optimizes intake charge distribution across your CR250's cylinder, delivering sharper throttle response and increased horsepower throughout the entire RPM range. By maintaining consistent flow velocity and redirecting the...10080112- SKU:
- 10080112
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
$179.95 -
BOYESEN Super Stock Reeds - Fiber - YZ250 SSF332
BOYESEN
$34.95Reeds are the unsung heroes of two-stroke performance—they directly control fuel and air mixture timing, and worn or suboptimal reeds rob you of horsepower across the entire RPM range. The BOYESEN Super Stock Reeds deliver OEM-matched performance with...10080110- SKU:
- 10080110
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REED PETAL
- MODEL:
- SUPER STOCK
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- FIBERGLASS
- UNITS:
- SET
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
BOYESEN Super Stock Reeds - Fiber - KX250 SSF212
BOYESEN
$34.95Reed valves are critical to your engine's intake efficiency—when they wear or lose their sealing integrity, you lose power across the entire RPM range. BOYESEN Super Stock Reeds deliver OEM-matched performance with superior durability compared to...10080109- SKU:
- 10080109
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- REED PETAL
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- FIBERGLASS
- UNITS:
- SET
$34.95 -
BOYESEN Super Stock Reeds - Fiber - CR250 SSF402
BOYESEN
$34.95Worn or damaged reeds directly rob your CR250 of throttle response and peak power across the entire RPM band. BOYESEN Super Stock Reeds restore factory-matched airflow dynamics while delivering measurably longer service life than stock alternatives...10080108- SKU:
- 10080108
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- MATERIAL:
- FIBERGLASS
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- REED PETAL
$34.95 -
BOYESEN Super Stock Reeds - Fiber - CR125 SSF301
BOYESEN
$34.95If you're running a CR125 in competition or high-demand conditions, stock reeds will become your limiting factor—restricting airflow and throttle response when you need them most. BOYESEN Super Stock Reeds deliver matched performance across the entire...10080107- SKU:
- 10080107
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REED PETAL
- UNITS:
- SET
- MODEL:
- SUPER STOCK
- MATERIAL:
- FIBERGLASS
- RIDING STYLE:
- OFF-ROAD
$34.95 -
BOYESEN Super Stock Reeds - Carbon - YZ250 SSC332
BOYESEN
$50.95Boyesen Super Stock reeds deliver measurable performance gains across your entire RPM range while maintaining the reliability you expect from OEM-matched specifications. Carbon construction extends service life compared to conventional fiber reeds,...10080106- SKU:
- 10080106
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MATERIAL:
- CARBON
- PRODUCT NAME:
- REED PETAL
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- SUPER STOCK
$50.95Qty in Cart: 0Quantity:Price:$50.95Subtotal: -
BOYESEN Super Stock Reeds - Carbon - KX250 SSC212
BOYESEN
$50.95Reed valves are the heartbeat of two-stroke performance—they control the precise timing of fuel mixture entering the crankcase, directly impacting throttle response, power delivery, and engine longevity. BOYESEN Super Stock Reeds deliver OEM-matched...10080105- SKU:
- 10080105
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MODEL:
- SUPER STOCK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
- MATERIAL:
- CARBON
- PRODUCT NAME:
- REED PETAL
$50.95Qty in Cart: 0Quantity:Price:$50.95Subtotal: -
On Sale
BOYESEN Super Stock Reeds - Carbon - CR125 SSC301
BOYESEN
MSRP: $50.95Now: $33.00Was: $50.95Reed valves are the heart of your snowmobile's intake system, and worn or suboptimal reeds directly limit power delivery and throttle response. The BOYESEN Super Stock Reeds deliver OEM-matched performance with extended durability, giving you reliable...10080103- SKU:
- 10080103
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
- MATERIAL:
- CARBON
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- REED PETAL
MSRP: $50.95Now: $33.00Was: $50.95 -
BOYESEN Pro Series Reed - YZ250 PRO-218
BOYESEN
$62.95If you're looking to unlock measurable gains in throttle response and acceleration on your YZ250, the Boyesen Pro Series Reed delivers the quick piston speed tracking your engine demands. The dual-stage design—carbon fiber top reed paired with a...10080102- SKU:
- 10080102
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MODEL:
- PRO SERIES
- BASE COLOR:
- YELLOW
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
BOYESEN Pro Series Reed - YZ125 PRO-217
BOYESEN
$62.95If you're chasing peak throttle response and acceleration on your YZ125, reed quality directly impacts your engine's ability to breathe efficiently at every RPM. The Boyesen Pro Series Reed delivers the responsiveness competitive riders demand, combining...10080101- SKU:
- 10080101
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MATERIAL:
- CARBON FIBER
- MODEL:
- PRO SERIES
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
BOYESEN Pro Series Reed - KX250 PRO-216
BOYESEN
$62.95If you're serious about maximizing your KX250's acceleration and throttle response, reed quality directly impacts your engine's ability to breathe efficiently. The Boyesen Pro Series delivers the fastest reed response on the market by pairing high-tech...10080100- SKU:
- 10080100
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MATERIAL:
- CARBON FIBER
- MODEL:
- PRO SERIES
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
$62.95 -
BOYESEN Pro Series Reed - CR250 PRO-215
BOYESEN
$62.95Stock reeds limit your CR250's potential—they can't respond fast enough to aggressive throttle inputs, costing you acceleration and mid-range punch. The Boyesen Pro Series Reed delivers the quickest throttle response available in a two-stroke, pairing a...10080099- SKU:
- 10080099
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- REED PETAL
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- UNITS:
- SET
$62.95 -
BOYESEN Pro Series Reed - CR125 PRO-214
BOYESEN
$62.95If you're serious about maximizing your CR125's acceleration and throttle response, the Boyesen Pro Series Reed delivers the speed and precision you need to stay competitive. The dual-stage reed design responds instantly to piston speed changes, giving...10080098- SKU:
- 10080098
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MATERIAL:
- CARBON FIBER
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REED PETAL
$62.95 -
BOYESEN Power Reeds - YZ250/X 6131
BOYESEN
$39.95Stock reed valves limit your YZ250/X's potential across the RPM band, forcing you to choose between low-end response and top-end power. The Boyesen Power Reeds solve this with a dual-stage design that optimizes performance at every throttle position,...10080097- SKU:
- 10080097
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- BASE COLOR:
- YELLOW
- UNITS:
- SET
- PRODUCT NAME:
- REED PETAL
- MODEL:
- POWER REED
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- FIBERGLASS
- TYPE:
- DUAL STAGE
$39.95Qty in Cart: 0Quantity:Price:$39.95Subtotal: -
BOYESEN Power Reeds - YZ125 '05-'16 6130
BOYESEN
$39.95The stock reed valve is often the bottleneck limiting your YZ125's power delivery—especially across the mid-to-high RPM range where you need every bit of performance. Boyesen's dual-stage power reeds replace that constraint with a precision-engineered...10080096- SKU:
- 10080096
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- POWER REED
$39.95 -
BOYESEN Power Reeds - KX250 '05-'07 6129
BOYESEN
$39.95Your KX250's stock reed valve assembly limits peak power delivery and throttle response across the RPM band. Boyesen's patented dual-stage Power Reed design splits the workload between two engineered reeds—one optimized for low-RPM crispness, the other...10080095- SKU:
- 10080095
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MODEL:
- POWER REED
- RIDING STYLE:
- OFF-ROAD
$39.95
