Description

COPATIBLE: (4.4L – N63B44)

2011 – 2017 BMW 550i

2011 – 2017 BMW 550i xDrive

Dinan’s Free Flow Axle-Back Exhaust 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 with zero drone. 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. A vacuum controlled butterfly valve is utilized to improve flow at wide-open throttle while keeping things civilized and “drone” free throughout. The design reduces overall weight as well and features 3.5” polished, or ceramic black, tips for a tasteful high-performance look.

• More Power: +10 HP when coupled with engine software

• Drone abatement technologies used to reduce cabin resonance

• Enjoyably louder, sportier sound

• Quad 3.5″ laser engraved, polished or ceramic blackexhaust tips

• 100% 304 stainless steel construction

• Uses the factory brackets and hangers for a factory-like fitment

ABOUT DINAN CARS

Founded in 1979, Dinan is well established as North America’s premiere BMW tuner. In recent years Dinan has further expanded its portfolio to include other European marques such as MINI and Mercedes Benz. For all makes, Dinan develops, manufactures and markets a comprehensive line of high performance products and systems, distributed through a worldwide network of Authorized Dinan Performance Centers that include New Car Dealerships as well as Independent Service/High Performance facilities. The expansive dealer network coupled with Dinan’s industry leading warranty program, quality products and solid engineering have helped make Dinan a household word among driving enthusiasts that desire “performance without sacrifice.”

Install Guide:

WARRANTY: