Boyesen 636 Power Reed

Product description

• For: Yamaha CR500 1989-2001
• Power reeds use a patented dual stage fiberglass design for more air flow, more air velocity and more power
• The top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMs; the stiffer, bottom reed is ported to provide maximum flow and horsepower at higher RPMs
• Longer overall life: Boyesen power reeds outlast all other aftermarket reed petals
• Minor change gives major horsepower improvements and fuel economy