boyesen

THE GATEKEEPERS OF POWER Quickest acceleration any reed can offer for that all important holeshot Carries RPMs further past peak allowing you to run that steeper pitched impeller for increased top end Easy starting and smoother idling for those dreaded no-wake zones Increased life over tradit...

Boyesen's patented dual-stage reed design incorporates a specially shaped top reed and a ported bottom reed. 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 R...

Boyesen's Pro Series Reeds are designed with the racer and avid enthusiast in mind. They offer you the latest in carbon reed technology with all the advantages of Boyesen’s dual-stage design. A carbon fiber top reed is combined with a fiberglass bottom reed for unrivaled performance. The unique, ...

Replacement Pro Series Reeds for Boyesen RAD Valves. Includes petals, rev-plates and extra screws.   We recommend all motorcycle parts are fitted and tested by qualified professionals. If you are unsure about the part choice for your bike, please contact us before purchase.

Ride with style and make your motorcycle stand apart from the rest of the pack with the ultimate look in race performance. Boyesen Clutch Covers are guaranteed not to warp and are individually surfaced for a perfect, leak-free fit. Investment Cast Aluminum - Provides excellent heat dissipation...

Replacement Clutch Cover gaskets for Boyesen Clutch Covers. Includes 1 nitrile bound gasket.   We recommend all motorcycle parts are fitted and tested by qualified professionals. If you are unsure about the part choice for your bike, please contact us before purchase.  

Ride with style and make your motorcycle stand apart from the rest of the pack with the ultimate look in race performance. Boyesen Ignition Covers are guaranteed not to warp and are individually surfaced for a perfect, leak-free fit. Investment Cast Aluminum - Provides excellent heat dissipation...

Replacement Ignition Cover gaskets for Boyesen Ignition Covers. Includes 1 nitrile bound gasket.   We recommend all motorcycle parts are fitted and tested by qualified professionals. If you are unsure about the part choice for your bike, please contact us before purchase.  

Boyesen's Powerwing is the perfect air delivery enhancement upgrade used to increase horsepower and torque by maximizing your intake system. The Powerwing's unique design maximizes airflow to increase horsepower, torque and responsiveness, without restrictions to your existing carburetor.    We...

The Gulp Factor - Your engine is a glutton for air. It will take over 200 'gulps per second, at velocities over 500 MPG - if your intake valve will let it. Boyesen's RAD Valve's seamless, one-piece, precision casting and continuous aeroform surfaces ensure maximum flow velocities and instant, exp...

BOYESEN RAD Valve Boot & Clamp & Parts   We recommend all motorcycle parts are fitted and tested by qualified professionals. If you are unsure about the part choice for your bike, please contact us before purchase.

The Boyesen SuperCooler water pump kit is an aluminum cast water pump cover and impeller combo; specifically designed to enhance the performance of your engines cooling system.   We recommend all motorcycle parts are fitted and tested by qualified professionals. If you are unsure about the part...