The performance package for the BMW F-series consists of the intercooler upgrade kit, the N55 downpipe kit without catalyst. Intercooler Upgrade Kit 200001066 The high-performance intercooler has the following dimensions (520mm x215mm x145mm /stepped 13.840cm³ / Stock IC 510mm x130mm x110mm, 7.293cm³) Approximately 85% bigger surface and 90% more volume than the OEM Intercooler. The competition core provides excellent cooling properties. Weight (11,5kg). The end tanks of the intercooler are made of cast aluminium and have been optimized with the help of flow analysis in the CAD system. Plug & Play Installation using the stock plumbing, no cutting or bumper removal required. Packing List: 1 Intercooler 1 Mounting material 1 Installation instruction Downpipe-Kit N55 catless 500001014 Replacement for OEM BMW Part# 18328603875 Made out of high quality stainless steel 1.4301 (SS304) 100% perfect fit, replace OEM Less thermal load on the turbocharger More power by reducing back pressure Significantly more torque Without Catalytic Converter Connection diameter 105mm