BMW 8 Series M8 & M8 Competition 4.4l V8 Twin Turbo F93 Gran Coupe LCI (OPF/GPF Equipped Cars Only) (2021-2026) SSXBM1185 Particulate Filter-back OPF/GPF Back System with valved Rear Silencer Bypass & GT-115 Polished Trims (OE requires cutting) 80mm /