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 Reeds - CR250 '05-'07 6128
BOYESEN
$39.95Stock reed valves limit your CR250's potential across the RPM band, forcing you to choose between low-end responsiveness and high-RPM power. Boyesen's dual-stage design eliminates this compromise by pairing a lightweight top reed for crisp...10080094- SKU:
- 10080094
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 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 - CR125 '05-'07 6127
BOYESEN
$39.95Stock reed valves limit your CR125's potential across the RPM band, forcing you to choose between low-end response and high-RPM power. Boyesen's dual-stage Power Reed design eliminates that compromise by pairing a lightweight, responsive top reed with a...10080093- SKU:
- 10080093
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- MODEL:
- POWER REED
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- PRODUCT NAME:
- REED PETAL
$39.95 -
BOYESEN Power Reeds - Polaris/Eton/Kasea 6108
BOYESEN
$28.95Stock reed valves limit your engine's breathing potential, choking performance at both low and high RPMs. Boyesen Power Reeds solve this with a patented dual-stage design that optimizes throttle response across the entire RPM band, delivering crisp...10080092- SKU:
- 10080092
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- POWER REED
- PRODUCT NAME:
- REED PETAL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- SET
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- TYPE:
- DUAL STAGE
$28.95Qty in Cart: 0Quantity:Price:$28.95Subtotal: -
BOYESEN Power Reeds - Polini 6107
BOYESEN
$28.95If you're running a two-stroke with a restrictive stock reed valve, you're leaving horsepower on the table. Boyesen Power Reeds optimize your intake charge across the entire RPM range—crisp response at part throttle and maximum flow when you're pushing...10080091- SKU:
- 10080091
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- POWER REED
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- FIBERGLASS
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- PRODUCT NAME:
- REED PETAL
- RIDING STYLE:
- STREET
$28.95 -
BOYESEN Pro Series Reed - RM250 '04-'08 PRO-210
BOYESEN
$62.95Your RM250's throttle response is only as good as your reed valves. The BOYESEN Pro Series Reed delivers genuine gains in acceleration and peak power by responding instantly to piston speed changes—giving you the crisp, predictable power delivery that...10080051- SKU:
- 10080051
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CARBON FIBER
- UNITS:
- SET
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
BOYESEN Pro Series Reed - RM125 '04-'08 PRO-208
BOYESEN
$62.95If you're running an RM125 and want measurable gains in throttle response and acceleration, the Boyesen Pro Series Reed delivers the precision your engine demands. The dual-stage carbon fiber and fiberglass construction responds instantly to piston speed...10080050- SKU:
- 10080050
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REED PETAL
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- MATERIAL:
- CARBON FIBER
- TYPE:
- DUAL STAGE
- UNITS:
- SET
$62.95 -
BOYESEN Pro Series Reed - KX250 '04 PRO-206
BOYESEN
$62.95If you're serious about maximizing your KX250's power delivery, your reed valve design directly controls how efficiently your engine breathes. The Boyesen Pro Series Reed upgrades your intake architecture with a dual-stage carbon fiber and fiberglass...10080049- SKU:
- 10080049
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MATERIAL:
- CARBON FIBER
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
$62.95 -
BOYESEN Pro Series Reed - KX125 '04-'05 PRO-204
BOYESEN
$62.95If you're running a KX125 and want measurable gains in throttle response and acceleration, the Boyesen Pro Series Reed delivers the precision timing your engine needs to convert fuel into horsepower. The dual-stage design—carbon fiber top reed paired...10080048- SKU:
- 10080048
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- MATERIAL:
- CARBON FIBER
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REED PETAL
$62.95 -
BOYESEN Pro Series Reed - KX85/100 RM100 PRO-212
BOYESEN
$57.95If you're chasing faster acceleration and sharper throttle response on your KX85/100 or RM100, reed quality directly impacts how quickly your engine responds to input. The BOYESEN Pro Series Reed eliminates the sluggish feel of worn or inferior reeds by...10080047- SKU:
- 10080047
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- MATERIAL:
- CARBON FIBER
- UNITS:
- SET
$57.95Qty in Cart: 0Quantity:Price:$57.95Subtotal: -
BOYESEN Pro Series Reed - CR250 '04 PRO-200
BOYESEN
$69.95Reed valve performance directly impacts throttle response, acceleration, and peak horsepower on 2-stroke engines—and the Boyesen Pro Series delivers measurable gains across all three. This dual-stage design responds instantly to piston speed changes,...10080046- SKU:
- 10080046
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- CARBON FIBER
- BASE COLOR:
- YELLOW
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- MODEL:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REED PETAL
$69.95 -
On Sale
BOYESEN Pro Series Reed - CR125 '04 PRO-198
BOYESEN
MSRP: $62.95Now: $40.00Was: $62.95If you're running a CR125 and want to eliminate hesitation between throttle input and engine response, the Boyesen Pro Series Reed delivers the snap you're after. The dual-stage carbon fiber and fiberglass construction responds instantly to piston speed...10080045- SKU:
- 10080045
- 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
MSRP: $62.95Now: $40.00Was: $62.95 -
BOYESEN Racing Reed - YZ125 '04 6119
BOYESEN
$39.95Stock reed valves limit your YZ125's potential across the RPM band—they're a compromise designed for reliability, not performance. Boyesen's dual-stage racing reed transforms throttle response and peak horsepower by matching reed stiffness to engine...10080043- SKU:
- 10080043
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MODEL:
- POWER REED
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- FIBERGLASS
- TYPE:
- DUAL STAGE
- BASE COLOR:
- YELLOW
- UNITS:
- SET
- PRODUCT NAME:
- REED PETAL
$39.95 -
BOYESEN Racing Reed - RM250 '04-'08 6123
BOYESEN
$39.95Stock reed systems limit your RM250's potential across the RPM band—they compromise either low-end response or high-RPM flow, forcing you to choose between performance characteristics. Boyesen's dual-stage reed design eliminates this trade-off by pairing...10080042- SKU:
- 10080042
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- POWER REED
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
$39.95Qty in Cart: 0Quantity:Price:$39.95Subtotal: -
BOYESEN Racing Reed - RM125 '04-'08 6122
BOYESEN
$39.95If you're running a RM125 two-stroke, your reed valve assembly directly controls how efficiently your engine breathes at every RPM range. The Boyesen Racing Reed replaces the factory limitation with a dual-stage design that optimizes throttle response at...10080041- SKU:
- 10080041
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- POWER REED
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- PRODUCT NAME:
- REED PETAL
- TYPE:
- DUAL STAGE
- UNITS:
- SET
$39.95Qty in Cart: 0Quantity:Price:$39.95Subtotal: -
BOYESEN Racing Reed - KX125 '04-'08 6120
BOYESEN
$39.95If you're running a KX125 and leaving performance on the table with a stock reed valve, Boyesen's dual-stage design is engineered to unlock measurable gains in throttle response and peak horsepower. The patented two-reed configuration adapts across the...10080039- SKU:
- 10080039
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REED PETAL
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- MODEL:
- POWER REED
- TYPE:
- DUAL STAGE
- UNITS:
- SET
$39.95 -
BOYESEN Racing Reed - Suzuki/Kawasaki 6124
BOYESEN
$34.95Standard reeds restrict your engine's breathing potential, costing you measurable horsepower and throttle response. The Boyesen Racing Reed delivers dual-stage reed technology that's proven by laboratory flow analysis to outperform conventional designs...10080038- SKU:
- 10080038
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- SET
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- TYPE:
- DUAL STAGE
- MODEL:
- POWER REED
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REED PETAL
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
On Sale
BOYESEN Racing Reed - CR250 '04 6118
BOYESEN
MSRP: $48.95Now: $31.00Was: $48.95The stock reed valve in your CR250 is limiting your engine's potential across the entire RPM range. Boyesen's dual-stage reed design increases flow velocity at every operating pressure point, translating to sharper throttle response at low RPMs and...10080037- SKU:
- 10080037
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- FIBERGLASS
- PRODUCT NAME:
- REED PETAL
- BASE COLOR:
- YELLOW
- MODEL:
- POWER REED
- TYPE:
- DUAL STAGE
- UNITS:
- SET
MSRP: $48.95Now: $31.00Was: $48.95 -
BOYESEN Racing Reed - CR125 '04 6117
BOYESEN
$39.95Stock reeds limit your CR125's potential across the entire powerband, leaving performance on the table from idle through peak RPM. Boyesen's dual-stage reed design has been proven through laboratory flow analysis to deliver superior velocity and...10080036- SKU:
- 10080036
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- YELLOW
- MATERIAL:
- FIBERGLASS
- MODEL:
- POWER REED
- TYPE:
- DUAL STAGE
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REED PETAL
$39.95 -
BOYESEN Radiator Valve - YZ125 '04 RAD-33I
BOYESEN
$179.95If you're running a YZ125 and want noticeably sharper throttle response with measurable gains across the entire RPM band, a Boyesen radiator valve is a direct path to more usable horsepower and torque. This bolt-on upgrade optimizes your intake charge...10080035- SKU:
- 10080035
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
- MODEL:
- RAD VALVE
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
BOYESEN Radiator Valve - RM250 '04-'08 RAD-24K
BOYESEN
$179.95If you're running a Suzuki RM250 and leaving throttle response on the table, a Boyesen Radiator Valve is the bolt-on upgrade that'll sharpen your power delivery across the entire RPM band. By optimizing intake charge distribution and maintaining...10080034- SKU:
- 10080034
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MODEL:
- RAD VALVE
- TYPE:
- DUAL STAGE
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- REED CAGE ASSEMBLY
- MATERIAL:
- CARBON FIBER
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal:
