Boyesen Rad Valve: CR500R 85-2001


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  • Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports
  • Provide quicker, sharper throttle response and more horsepower throughout rpm range
  • Specially-designed reed cage holds Boyesen’s patented dual-stage reeds
  • Boyesen’s hot RAD valves ratchet up your torque
  • One-piece cast aluminum bolts in easily
  • Order one set per cylinder

Additional information


CR500R 85-1989, CR500R 90-2001


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Make Model Year
Honda CR500R 1985 - 2001
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