Dinan High Flow X-Pipe for BMW M3 F80 / M4 F82 (2015-2020)

The Dinan High Flow X-Pipe D660-0060 replaces the factory center exhaust section of the S55-powered F80 M3 and F82 M4, from just behind the secondary catalytic converters back to the rear muffler. Both factory resonators are deleted, and the stock 65 mm hydro-formed tubing gives way to 2.75-inch (70 mm) mandrel-bent T304 stainless steel tubing.

The centerpiece is a custom mandrel-bent X crossover rather than the stamped X found on many aftermarket pipes, the same layout Dinan used on its E9x M3 race mid-exhaust. Expect a louder, deeper and more aggressive note, especially paired with Dinan's Free Flow axle-back, and more drone in the cabin than stock because the resonators are gone.

Fitment is the 2015-2018 F80 M3 sedan and the 2015-2020 F82 M4 coupe, as listed by Dinan and by another retailer; Dinan's own instruction sheet was written for 2015-2017 cars. Dinan has only confirmed fit with its Free Flow axle-back and the stock non-M Performance rear exhaust, so fit with other axle-backs is not guaranteed. The F83 M4 convertible, M4 CS and M4 GTS are not on Dinan's list, so call us before ordering for those cars.

Dinan describes the kit as bolt-on, but its instructions have you cut both factory pipes at measured points behind the cats and cut the stock muffler just ahead of its Y-pipe welds (skip the rear cut if a Dinan muffler is already fitted), then join everything with the supplied clamps and couplers. Spacer plates are included to gain clearance at the center cross brace. Dinan quotes about 2 hours of labor and 1 Dinan point. Emission code 5: it does not affect emissions and is legal in all 50 states. Coverage is Dinan's limited warranty: the remainder of the vehicle's factory limited warranty (up to 4 years / 50,000 miles) or 2 years with unlimited miles, whichever is greater. It ships in one carton of about 65 x 24 x 7 inches at roughly 24.4 pounds. Dinan installation instructions (PDF).

Features

• Replaces the F80 M3 / F82 M4 center section and deletes both resonators
• 2.75-inch (70 mm) mandrel-bent T304 stainless tubing
• Mandrel-bent X crossover, not a stamped X
• Deeper, more aggressive note; more cabin drone than stock
• Clamps, couplers and spacer plates included

What's Included

• Dinan High Flow X-Pipe (D660-0060)

Specifications

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.

Fitment Notes

• S55 F80 M3 (2015-2018) and F82 M4 (2015-2020) only.
• Only confirmed with the stock non-M Performance or Dinan Free Flow axle-back.
• F83, M4 CS and M4 GTS not listed by Dinan; call first.