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Heavy duty Mandrel bent 304 stainless steel
2013-2016 BMW 235i & 435I N55 Single Turbo Engine
Build From August 2013 to 2016 BMW 135i & 335i N55 Single Turbo Engine
Will NOT FIT BMW 135i & 335i Built Before August 2013
Tig Welded & Mandrel Bent Stainless Steel Integrated extra O2 Sensor Plugs For Wideband 4" HI Flow Downpipe for HP & TQ Gains Gains up to 25 Rwhp and 30 Rwtq with proper TuningHeavy duty Mandrel bent 304 stainless steel