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With a shoulder part 50mm narrower than the SPA model and a seat cushion width reduced by 10mm
-10 offset
making it perfect for any activity
By optimizing flow and resonance and utilizing BMW's original actuators
Installing it is a breeze
Dinan 16-18 BMW 340i (F30)/17-20 BMW 440i (F32) Free Flow Axleback Exhaust System - Polished Tips M850I Painted Reflectors With a shoulder part 50mmDinan engineers designed the F30 340i and F32 440i exhaust to improve 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 hard acceleration. Not only is the tone improved but the additional burbles and pops that come with it are simply intoxicating. Dinan also incorporates a Helmholtz chamber design that reduces resonance