Just recently bought this for my 06 RSX. all the pieces fit perfectly and it comes with all the required hardware you need. For the sound quality? It is absolutely perfect if you're going for a decently loud exhaust. Its not super loud at high end but you will feel good at low end, plus the sound quality isn't "ricey" at all, it sounds very healthy and throaty.

I like it, sound good not too loud and quiet it. Just the way I like it on my RSX.

Super fast shipping, Kseries has the cheapest prices I could find. Super happy with my purchase. Exhaust sounds amazing

Soung great. You can feel the increase in performance. Just have to remove the bis silencer from the exhaust.

Sounds awesome on my 02 base with everything else stock. Don't let the youtube videos fool you, it sounds better than that, very deep and tame with the catalytic converter on especially. The fit hugs the bumper perfectly, its got a decent upwards angle and hella side angle, and the silencer insert even looks better than most. The only flaw though that cost it one star is because of the cool huge tip and upwards angle, a decent amount of rain water will get inside the muffler when parked and HKS hasn't put any kind of drainage for that, so you'd either have to cover the tip with something, or maybe drill a little hole for drainage. Also, although the silencer itself looks nice, the two bolts on the side to hold it look a little funny.