Boyesen 640 Power Reed, Black

★★★★★ 4.6 58 reviews

$35.05
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$35.05
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 215970561 Release Date 2026/04/19 List Price $14.02 Model Number 215970561
Category

Boyesen Power Reeds use a patented dual-stage fiberglass design for more airflow, more air velocity and more overall power. This item fits the following applications: 1978-1989 Yamaha YZ250, 1983-1984 Yamaha IT490, 1982-1983 Yamaha YZ490, 1977-1983 Yamaha IT250, 1981-1982 Yamaha IT465, 1980-1981 Yamaha YZ465, 1980 Yamaha IT425, 1979 Yamaha YZ400, 1979 Yamaha IT400.

  • For: Yamaha IT250 all models; Yamaha IT400 1979-1985; Yamaha IT425 1979-1985; Yamaha IT465 1979-1985; Yamaha IT490 1979-1985
  • For: Yamaha WR250 1989; Yamaha YZ250 1978-1982; Yamaha YZ250 1989; Yamaha YZ400 1979; Yamaha YZ465 all models; Yamaha YZ490 1982-1983
  • 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
  • Power reeds use a patented dual stage fiberglass design for more air flow, more air velocity and more power; minor change gives major horsepower improvements and fuel economy
  • Fit type: Vehicle Specific
Brand Boyesen
Model Boyesen 640
Exterior Painted
Item Weight 0.353 ounces
Manufacturer Boyesen
Item model number 640
Product Dimensions 10 x 5.8 x 5 inches
Manufacturer Part Number 640
Is Discontinued By Manufacturer No

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4.6 out of 5
★★★★★
58 ratings | 24 reviews
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