Thanks to those who have responded to my two posts in the past month. After not owning a bike for about 15 years I purchased a 2000 WR this summer so I could ride with my two boys. I've tried to read all I can about exhausts for the WR but have a few specific questions yet to answered. Bottom line I'm looking to replace my stock exhaust so I can save some weight and increase performance. I ride mostly MX (for fun). The places we ride offroad have signs posted "Maximum 99 db". Here's my question: Which after-market pipe will save weight, increase performance, help with MX riding and keep the sound under 99 db? Thanks!