Whats the ACU noise limit for motorcylce... Read More >>

105 decibels is the limit set ,as per the ACU regulations, for all classes , both two and four strok... More

How do I work out the gearing for each c... Read More >>

It depends on many factors really. How long are the straights? Is there a slow hairpin. You need to ... More

My bike has failed a noise test at the t... Read More >>

If you have a race type silencer fitted and you are say 2-3 dB over , then fitting a noise reduction... More