Slats competition valves BOYESEN motorcycle 125cc HONDA NSR F, NSR R, RS ...

Here are the famous valves BOYESEN competition. These valves are made ​​for the 125cc machine equipped 2-stroke HONDA NSR F, NSR R, RS ....



It will allow an increase in power but also the couple! This is a patented double slat system, a thinner for low speeds and a thicker which kicks in (resonance) for high speeds! The fiberglass that is design the highest quality! Ideal to equip your unbridled and highly equipped machines. They come with instructions!



Mounts on (BOYESEN list):

-Honda NSR 125 F / R
-Honda RS 125