HGS will give tuners and distributors the option to have there company name or logo stamped in the pipe,to name a few RR,MXW,ZA,JR,EHR,BUD.
There is NO difference between these exhausts, except another name having been stamped on it. While we are happy that all customers may choose to buy a hgs with a extra logo on it,we wish to ensure its for that reason and not because you have been mislead by another seller suggesting a higher performance.