I got the R4 on my raptor, and i was impressed very much. and then after i jetted it, oh boy....... tears rolled down my cheek. My friend has a E-series on his raptor, and it didnt do much for low end. i have rode quads with fmf megamax and yoshimira and all that high priced stuff. to me, nothing comapred to the R4, and i only got the slipon. The pipe is loud, but if u dont make a big scene, the DNR doesnt care... For my eagle scout project i put up signs and stuff on the trails, and i took my raptor out there, and there was a bunch of DNR guys that could have gave me tickets, but they didnt cuz i wasnt making a big scene with it.

 

R4??? which company makes that?

 

The R4 is the whitre brothers "race pipe" just go to www.magicracing.com and look for white brothers exhaust and u will find it, it is a really great pipe.

 

i beleive the promeg is 94-96 db i dont have any experience w/ the r-4.