Dinan Free Flow Axle-Back Exhaust - 2008-2013 BMW M3 | D660-0027

The Dinan Free Flow Axle-Back Exhaust (D660-0027) is the most technologically advanced acoustic solution for the 2008-2013 BMW M3 (E9x), reflecting Dinan's pedigree as a championship-winning racing supplier. This system is engineered to solve the common compromise in performance exhausts by employing leading-edge technology, including a Helmholtz chamber and a straight-through, single-channel absorption design.

This technology increases flow while effectively reducing unwanted noise and eliminating the "drone" typically experienced at light throttle cruise. The system delivers a verified power increase of +6 HP and +5 LB-FT of torque at 6800 RPM and is a full 10 lbs lighter than the stock BMW part. Built from 100% 20 gauge-304 stainless steel to resist corrosion, this civilized exhaust provides a sporty sound at wide-open throttle while remaining quiet at light throttle cruise, consistent with Dinan's philosophy of "Performance Without Sacrifice."

Features:

• Verifiable Power Gains: Delivers an increase of +6 HP and +5 LB-FT of torque at 6800 RPM.

• Advanced Drone Abatement: Integrates a Helmholtz chamber and single-channel absorption design to effectively remove drone and reduce cabin resonance.

• Optimized Flow & Weight: Features a single-channel "straight through" canister design and is a full 10 lbs lighter than the stock exhaust.

• Superior Material: Built from 100% 20 gauge-304 stainless steel to resist corrosion.

• Aesthetic Excellence: Finishes with quad 3" laser engraved, polished stainless exhaust tips (ceramic black tips also available) for a tasteful high-performance look.

• Fitment Integrity: Uses the factory brackets and hangers for a guaranteed, factory-like fitment.

Product Contains:

• (1) Dinan Axle-Back Muffler Assembly

• (4) Quad 3" Polished Stainless Exhaust Tips

• (1) Complete Installation Hardware Kit

Warranty This product is backed by Dinan's comprehensive 4-year/50,000-mile factory matching new car warranty. Note: Manufacturer warranty terms are subject to change.

Installation Instructions