Slats of BOYESEN 125cc motorcycle APRILIA RS, RX, PEGASO, AF1, RED ROSE ... ROTAX 122 and 123

Here are the famous BOYESEN competition valves. These valves are made for 125cc 2-stroke machines APRILIA RS, RX, PEGASO, RED ROSE and many others.



They will allow an increase in power but also in torque! It is a patented system with double strips, a thinner one for low revs and a thicker one that comes into action (resonance) for high revs! The fiberglass that designs them is of very high quality! Ideal for equipping your unbridled and highly equipped machines. They are delivered with a notice!

Mounts on :

ROTAX 122 engine

ROTAX 123 engine

APRILIA AF1 125cc

APRILIA AF1 125cc FUTURA

APRILIA AF1 125cc REPLICA

APRILIA AF1 125cc SINTESI

APRILIA EUROPA 125cc

APRILIA PEGASO 125cc

APRILIA RED ROSE 125cc

APRILIA RS 125cc

APRILIA RS 125cc EXTREMA

APRILIA RX 125R

APRILIA SPORT 125cc

APRILIA SX 125cc

APRILIA TUAREG RALLY 125cc

APRILIA TUAREG WIND 125cc

HM CRE 125cc

HM DERAPAGE 125cc

And many other 125cc motorcycles.