Dinan Free Flow Axle-Back Exhaust – BMW M5 (F10)

OVERVIEW

Dinan's Free Flow Axle-Back exhaust for the F10 M5 is built entirely from stainless steel and measured to exact specifications so it hangs from the factory hangers and mounting points. Dinan dyno tuned the system for maximum exhaust flow with minimum backpressure, using its Helmholtz chamber and butterfly valve technologies to deliver a more aggressive sound under acceleration while holding down drone inside the cabin.

Gases exit through larger, laser engraved quad tips, offered in ultra durable polished stainless or ceramic black. The system is designed and tested in Morgan Hill, California, carries Dinan's factory matching new car warranty, and can be purchased and installed at any Dinan Approved BMW dealership nationwide.

SPECS

• Power gain: +8 HP
• Construction: 100% 304 stainless steel
• Muffler design: "straight through" canister with Helmholtz chamber and butterfly valve technology to remove drone
• Tips: quad 3.5 in, laser engraved, black ceramic coated or polished stainless
• Mounting: uses the factory brackets and hangers for factory-like fitment
• Dinan published install time: 1.9 hours
• Emissions: Dinan states this part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations. No CARB Executive Order number is published for this part.
• Warranty: Dinan covers the part for the remaining term of the vehicle manufacturer's new car limited warranty (typically 4 years / 50,000 miles) if the vehicle is still covered, otherwise 2 years / unlimited mileage from date of purchase. Maintenance and wear items, improper installation, racing use and competitive event damage are excluded.

PARTS INCLUDED

• Left and right Dinan muffler assemblies.
• Dinan mounting hardware kit.
• Complete kit as supplied by Dinan; see the installation instructions for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• None. Dinan specifies no additional hardware for this part — the mufflers mount to the factory hangers and mounting points, and the required hardware is supplied in the kit.
• Installer-supplied tools: standard metric hand tools, vehicle lift or jack stands, and penetrating oil for the factory exhaust clamp hardware.

Installation

• Dinan D660-0044 / D660-0044-BLK Free Flow Exhaust installation instructions (PDF)
• Dinan notes that some mechanical skill is required to install this muffler and recommends a qualified BMW repair facility if you are not familiar with the procedure.

PART NUMBER

• D660-0044-BLK — black ceramic coated tips (the finish stocked by Speed Logic)

VEHICLE APPLICATIONS