Very happy with these pipes. I bought the Road Star with some short Rinehart's that were just too loud. Replaced them with the Cobra PowerPro HP 2-into-1 and couldn't be happier. Took under an hour to replace the pipes. The sound is great - loud, but not too loud, especially while cruising. I can hear my blu-tooth headset with no problems (speakers are in pockets in the helmet. The other pipes were do loud I was wearing earplugs.