[Fast64ranchero]

Testing completed on a XC 525, Driver and I both thought the SX would dominate,,,

shows that the bone stock XC can is as good as the SX can, if your Limited by noise check out the ProMotoBillet, it's not bad...
tested DB levels using AMA test standards, although it was done in the dyno room not outside.
XC can 97 DB
SC Can 98 DB w/out the screen
Promotobillet open 104DB
PromotoBillet w/quite core 97 DB and 90 at idle
ProMotoBillet w/ultra quite core 96 DB and 88 at idle

 

[homdaddy]

do you have a picture of the promoto billet

 

[Fast64ranchero]

PromotoBillet end cap, fits XC or SX

and quite cores and sparky

 

[kiwi-craig]

WOW: now ain't that surprising, the 2 wheeler guys swear by the pro moto ends to quieten things down without losing power.....

You guys compare the XC can when gutted out vs stock ??

 

[japple226]

Question on the stock XC slip-on. Is it gutted? My is not gutted and I have the PMB end cap and it isn't that loud. Just wondering.

 

[Fast64ranchero]

Japple The XC can w/PromotoBillet end cap had the sparky removed,

Kiwi yes we did dyno my mod'd can, Driver and I did not put those numbers up as most people do not have the equipment to mod the can like I did,