D660-0079 – Dinan Freeflow Stainless Exhaust with Polished Tips for the BMW F90 M5
Dinan’s Free Flow Exhaustimproves 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.
Please note: Due to size and weight there will be a shipping surcharge of $90.00 for this item.
- 10HP @ 6600 RPM, 8FT-LB @ 6600 RPM
- Enjoyably louder, sportier sound
- 100% 304 stainless steel construction
- Four massive 4" diameter clamp-on, double-walled, polished and laser engraved exhaust tips.
- Larger diameter piping for increased flow (83mm vs 80mm)
- Stock exhaust valve actuators reused and operation of exhaust valve is unchanged so exhaust tone can be adjusted via the M-drive settings
- Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions.
- Twin secondary exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves
- Easy bolt-on installation with included mounting hardware