Suggested Silencer

Hi All
I have a AF Rayspeed 48 Clubman Exhaust fitted to my Li 150 Special 198cc Conversion. I find it a little too noisy and so do the neighbors.
Can an anyone recommend an alternative exhaust a lot quieter, which will not effect performance, if that is possible. I am not looking for a racing exhaust either.
Regards
I have a AF Rayspeed 48 Clubman Exhaust fitted to my Li 150 Special 198cc Conversion. I find it a little too noisy and so do the neighbors.
Can an anyone recommend an alternative exhaust a lot quieter, which will not effect performance, if that is possible. I am not looking for a racing exhaust either.
Regards