The competition package for the BMW F-series 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 / F33 till 06/2013 Intercooler Upgrade Kit 200001046 Stepped Competition Intercooler Core. Size 520 x 210 x130, 11.752cm³ Volume (OEM 510x130x110mm, 7293cm³ Volume). Approx. 85% bigger surface over OEM IC. CAD / FEM optimized Aluminum Cast Endtanks. Plug & Play Installation using the stock plumming, no cutting or bumper removal required. Weight 6,6kg Including TÜV certificate! Packing List: 1 Intercooler 1 Mounting material 1 Installation instruction 1 TÜV certificate 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