These are our Richter decat downpipes developed for the N54 BMW twin turbo engine as found in 2007-2009 135i and 335i. This exhaust option sounds brilliant, even with a standard cat-back system allowing for a much sportier, deeper tone. These are suitable for left and right hand drive cars. The kit also includes a new uprated gasket and bolt kit.
Please note, these downpipes require removal of the rear lambda sensors. The JB4 (or other stage 2 map) can remove the fault codes associated with rear lambda removal. If you plan on using a tune that is not a JB4 or our custom stage 2 remap please contact your tuner to discuss this.