ApplicationCompatible for BMW 1 Series (F20) M 135 i / M 135 i XDrive 235 kW, 240 kW N55 engine2013-07- Compatible for BMW 1 Series (F21) M 135 i / M 135 i XDrive, 235 kW N55 engine 2013-07- Compatible for BMW 2 Series (F22) M 235 i, Coupe, 240 kW N55 engine 2013-07- Compatible for BMW 2 Series (F23) M 235 i, Cabriolet, 240 kW N55 engine 2013-07- Compatible for BMW 3 Series (F30) 335 i / 335 iX, Sedan, 225 kW, 240 kW, 250 kW N55 engine 2013-07- Compatible for BMW 3 Series (F31) 335 i / 335 iX Touring, 225 kW, 240 kW, 250 kW N55 engine 2013-07- Compatible for BMW 3 Series GT (F34) 335 i / 335 iX, Gran Turismo, 225 kW, 240 kW, 250 kW N55 engine 2013-07- Compatible for BMW 4 Series (F32) 435 i / 435 iX Coupe, 225 kW, 250 kW N55 engine 2013-07- Compatible for BMW 4 Series (F33) 435 i / 435 iX, Cabriolet, 225 kW, 250 kW N55 engine 2013-07- Compatible for BMW 4 Series (F36) 435 i / 435 iX Gran Coupe, 225 kW, 250 kW N55 engine 2013-07-SpecificationProduct Specific : Downpipe diameter : 4 inch / 102mm 1 X Downpipe Decat PipeFeaturesCondition: 100% Brand new Warranty: one year warranty for any manufacturing defect Material: 201 grade stainless steel, anti-magnetic and not easy to get discolouration. TIG welding: super strong , prevent cracking, and long-lasting durability Flanges :CNC machined for strong, solid support and an accurate fit Surface: Hand polished mirror polished. Integrated flexi section: helps reduce exhaust strain Smooth and deep tone sound Installation notice：Direct fit bolt on, no modification needed, to ensure the correct fitment, we highly recommend you find a professtional mechanic to help you install it.NoticeDesigned to improve power and torque across the entire RPM range Noticeably improves throttle response One of the most cost effective ways of releasing power from your car With this Down Pipe between the turbocharger and the exhaust system, it could Increase both power and acceleration, the turbocharger can work better more efficiently and the exhaust gas temperature decreases significantly. achieve a significantly increased engine power and a higher torque. you can achieve a distinctive exhaust sound.Noticeable performance increase