Dinan High Flow X-Pipe - 2015-2020 BMW M3/M4 Wheel Spacers including a Helmholtz chamber and

including a Helmholtz chamber and single-channel absorption increases flow while reducing unwanted noise and weight

Dinan's Wheel Spacers physically move the wheel further away from the hub

The rotors cannot be resurfaced and must be replaced when worn

Compared to the factory 3 inch downpipe

'Dinan's high flow intake system for the 550i dramatically increases intake air-flow volume and velocity as well as ensuring the lowest possible intake air temperatures for maximum power gains

Dinan High Flow X-Pipe - 2015-2020 BMW M3/M4 Wheel Spacers including a Helmholtz chamber andThe Dinan High Flow X pipe for the F8x M3 M4 elicits an aggressive sound that is sure to capture the ear of all bystanders and delivers the aural recognition that all M3 M4 owners deserve. Coupled with the associated Dinan exhaust the sound is further perfected into an aggressive growl that harkens back to the Dinan E9x M3 racing middle exhaust. Rightly so, as the same custom 'X' that was used in that application is implemented on the new F8x chassis