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Boyesen 663 Power Reed Valve for Yamaha

Manufacturer

Picture for manufacturer Boyesen

Part Number

663
11 reviews
Sale Price

$29.74

2 left at this price

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Boyesen 663 Power Reed features a patented dual-stage fiberglass design engineered to maximize performance in Yamaha two-stroke engines. This advanced reed valve system delivers significantly improved airflow and air velocity compared to stock reeds, resulting in measurable power gains throughout the RPM range.

Key Features:

  • Patented dual-stage fiberglass reed petal design for optimized flex characteristics
  • Increased airflow volume and velocity for improved throttle response
  • Enhanced power delivery across the entire powerband
  • Direct replacement for OEM Yamaha reed valves
  • Precision-engineered for consistent performance and durability

Boyesen Power Reeds are designed to work with stock or aftermarket reed cages, providing an affordable upgrade that delivers noticeable performance improvements in acceleration and overall engine output.

great experience awaiting info on rma

Easy.....

good prices

Only place I was able to find this product

Wicked fast shipping! 3 days from California to Key West, Florida! We are amazed by this super fast service. Part is brand new and fits perfectly! Will use you again and HIGHLY recommend you!

,

so far all good.

Google took me to your website. They had my hard to find part. Easy to use. Checkout was a snap. If this part is the 1 then this may be my new one and only parts store. LOWEST PRICES!

you say you have the item in stock

Competitve prices!

*****

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