BRS Motorsport resonator delete, this might fit an F56 S and F55 S as well, but not 100%. Was fitted to my JCW for 11k miles without a issue. I suspect this is only good for Pre LCI cars, I don't think it'll work on any car with a GPF.
Comes with a single clamp for the front connection, I had the rear clamp, but it's shot, so it'll need a new one of those, pretty cheap off ebay. Standard exhaust will of course need cut to fit.
£50