The competition package for the BMW F-serie consists of the intercooler upgrade kit, the N55 downpipe kit without catalyst and fits the following vehicles. BMW M135i F20 / F21 till 06/2013 BMW 335i(x) F30 / F31 / F34 till 06/2013 BMW 435i(x) F32 / F36 till 06/2013 Intercooler Upgrade Kit 200001071 The high-performance intercooler has the following dimensions (520mm x215mm x145mm /stepped 13.840cm³ / Stock IC 510mm x130mm x110mm, 7.293cm³) Approx. 85% bigger surface and 90% more volume over Stock Intercooler. The competition core provides excellent cooling properties and weight is also very low (8,6kg). The end tanks of the intercooler are made of cast aluminum and have been optimized with the help of flow analysis in the CAD system. Plug & Play Installation using the stock plumming, 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