I recently purchased this exhaust for my GSX-S750Z, received it quickly with no issues what so ever. Sounds great, deep and loud! just as I imagined. Also was really easy to install. I highly recommend this exhaust.
I'm very happy with this purchase. I bought it for my 2016 Ninja ZX6R, and couldn't be happier with the sound, and performance. Was a little bit of a struggle trying to get the pan out with the back wheel which I know would have been much easier with a rear stand which I don't have. Other than that, great product.