We did tests on the circuit of Zolder in Belgium to see if our new 'Circuit Silencers' wouldn't make more noise than the maximum limit of 95 dB (A). We did the test on the most popular sportbikes with original specifications; none of the bikes exceeded the maximum noise limit.     

Honda Hornet Cup racer.

Therefore our circuit mufflers got the approval and are now ‘circuit legal’. We will produce these for everyone who from time to time rides his or her bike on track days or for competition use.

Our mufflers are more powerful, lighter and cheaper than the original ones and make a more deep BOS sound without exceeding circuit noise limits.

These mufflers are only available in titanium and are marked ‘circuit approved’ at the rear side of the
muffler’s end pipe. You can find these also on our new updated price list.

Replacing dB eater for the next test.

CBR 600 full race with only
88 dB(A).