Boyesen Motorcycle RAD Valve (RAD-03A)

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SKU: RAD-03A

BOYESEN engineers embarked on a mission to create a new ...Read more

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Sale price$172.49 Regular price$179.95
1720 ENTRIES10X
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

BOYESEN engineers embarked on a mission to create a new lineage of aerodynamic intake technology by refining the primary performance factors required to increase peak horsepower through design innovation: Aerodynamic Surface Optimization, Model-Specific Reed Petal Tensioning, Material Fuel Resistance, and Multi-Stage Reed Timing. Together, these innovations create a new technological benchmark in intake performance.

  • Boyesen Engineering would like to introduce the all-new RC2 Series Rad Valve, designed to increase overall horsepower and throttle response in the Yamaha YZ250/250X KTM65SX and Kawasaki KX85/100
  • Each Boyesen RAD Valve is unique - tailor made to that model, year and displacement.
  • The intake charge is redirected for more even distribution to the intake ports
  • Constant flow velocity is maintained for instant throttle response and more horsepower
  • One piece design and Easy installation
  • Brand: Boyesen
  • Part number: RAD-03A
  • Category: Intake/Carb/Fuel System

BOYESEN engineers embarked on a mission to create a new lineage of aerodynamic intake technology by refining the primary performance factors required to increase peak horsepower through design innovation: Aerodynamic Surface Optimization, Model-Specific Reed Petal Tensioning, Material Fuel Resistance, and Multi-Stage Reed Timing. Together, these innovations create a new technological benchmark in intake performance.

  • Boyesen Engineering would like to introduce the all-new RC2 Series Rad Valve, designed to increase overall horsepower and throttle response in the Yamaha YZ250/250X KTM65SX and Kawasaki KX85/100
  • Each Boyesen RAD Valve is unique - tailor made to that model, year and displacement.
  • The intake charge is redirected for more even distribution to the intake ports
  • Constant flow velocity is maintained for instant throttle response and more horsepower
  • One piece design and Easy installation
  • Brand: Boyesen
  • Part number: RAD-03A
  • Category: Intake/Carb/Fuel System

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