Carbuerator - Intake

Increased airflow performance.

Boyesens' revolutionary dual-stage Pro Series reed design delivers more usable power than stock. Your original one-stage reed operates most effectively only within a narrow RPM range. Boyesen'...

Replacement Pro Series Reeds for Boyesen RAD Valves. Includes petals, rev-plates and extra screws.

Lenhartsville, PA – Boyesen Engineering has now introduced the NEW Power X-Wing™, which increases horsepower and torque on 2 and 4 stroke bikes. On 2 strokes, the PowerWing improves power ...

    THE GATEKEEPERS OF POWER Quickest acceleration any reed can offer for that all important holeshot Crisper throttle response making challenging obstacles effortless More overrev so...