i have a limited edition 04 raptor 660 and it is to bloody loud. i have a bills thunderpipe, what can i do to make it quiet, i have been told to repack it with fibreglass. should i do this? how should i do this? what should i do?

 

The bills pipe is Bloody loud to start with. You should be able to pick up a "repack kit" from your local dealer or order from Rocky Mountain or straight from Bills. Check your jetting to make sure you you are not running to hot and speeding up the decay of the packing.