BOYESEN competition valve slats 125cc 2-stroke HONDA NSR F, NSR R, RS ...

Here are the BOYESEN valve slats for HONDA NSR F, NSR R, RS ... 125cc. These competition valves will allow you a very good gain in power both in terms of torque and at high speed. The patented BOYESEN system uses 2 slats on each side!



A thinner for the couple (resonant frequency at low speed) and a very rigid for high speeds (frequency in very high speeds). These valves are delivered with an ultra complete manual (carburettor adjustment etc etc,) Stops special blades removed and stickers.