View Full Version : pipe

02-15-2009, 09:14 AM
I'm going to try and run my first WORCS races this year. Hopefully Milford and the two in WA. I wanted to know what pipes people were running to meet the sound restrictions? I've always raced MX and am looking to replace the Sparks exhaust on my YFZ with something acceptable for WORCS. Thanks

02-15-2009, 11:25 AM
Im currently running motoworks on my 06' yfz with quiet core. passed 97 db's. I just repacked it for round 2. I ran LRD at havasu last season with a quiet core and was 95db's. sparks would be tough to pass sound.

02-15-2009, 11:40 AM
Yeah that's why i'm getting rid of the Sparks. It tested at 101 with their "quiet" tip and spark arrestor in.

race proven
02-15-2009, 12:38 PM
Motoworks has a new pipe that will pass sound.

02-16-2009, 03:31 PM
My FMF Factory 4.1 pipe passed with 96 with no cores or spark arrestors!

02-17-2009, 10:27 AM
My sparks passed twice last year. Just put an old wore out seat on it. :D