I bought the sbp expansion chamber and i was wondering if it would be beneficial for me to sawzawl the muffler end off?
Expansion chamber mod?
- Thread starter maximillian
- Start date
*shrug* Other than it'll be annoying, even ear-bleedingly loud and perhaps reduce performance (being a "tuned pipe" the size of the outlet is more than likely part of it's design) - it's yer bike man 
