it is used, and is only the back box, i nearly bought it but thought £200 was dear for a back box, when you can get the whole cat back system new for £300, you may need to get the cat back bits for it as it will be a different bore to the standard system, i think you payed to much for it to be honest as it is only the back box, cat back pipe is going to cost you around a £100+ i would of thought, you would of been better buying a brand new one and not used one as you would of got warranty with it.. as i think miltek only warranty there stuff if you have bought it from new!!!!!!