Dinan engineers designed the F22 BMW M235i 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. Dinan also incorporates a Helmholtz chamber design that reduces resonance or “drone” at low RPM.

The system is built to exacting specifications to ensure perfect fit using the factory hangers. It is made from 100% 16 gauge 304 stainless steel and will resist corrosion for years to come. The design features twin 89mm polished exhaust tips for a tasteful, high-performance look.

Note: For vehicles WITH the M-Performance rear valence.

Features:

• +6 HP @ 6600 RPM, +5 lb/ft @ 6600 RPM
• Uses the factory brackets and hangers for a factory-like fitment
• Weight Savings
• Dinan’s Tuned Resonance Chamber Technology
• Helmholtz chamber reduces drone
• 100% 304 stainless steel construction
• Dual 89mm (3.5″) laser engraved polished stainless steel or black ceramic exhaust tips

Installation Instructions: Dinan F22 M235i Axle-Back Exhaust D660-0048 Instructions

VEHICLE FITMENT

• F22 BMW M235i – N55