Dinan Exhaust for BMW E82 E88 135i 2008-2013

Dinan's free flow exhaust for the 135 improves exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound.

Dinan's free flow exhaust for the 135 improves exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound that is civilized when you want it to be and pleasantly aggressive under harder acceleration. 100% stainless steel construction and exacting specifications ensure that the system fits correctly using the factory hangers and will resist corrosion for years to come. The design reduces overall weight as well and features two 3.5'' polished stainless tips for a tasteful high performance look.

Specifications

Max HP Gain: 6 @ 6600 rpm

Max Torque Gain: 5 lb-ft @ 6600 rpm