The Northern California–based CarBahn gives the BMW M4 Competition xDrive an aftermarket makeover that builds on an ...

The latest BMW M4 is more grown up ... Exiting out back is a sport-tuned exhaust system with electronically-controlled flaps that can deliver a more raucous note when requested.

Few automotive brands are more iconic than BMW M. Originally founded as the racing division of the German luxury carmaker, it ...

The BMW M4 Competition Package is the first significant ... exterior styling upgrade is standard fit, as is the M sports exhaust system. The upgraded exhaust brings a more vocal character on ...

In the middle sits the BMW M4 CS, or Club Sport ... change to the powertrain is the fitment of a more free flowing exhaust system. Away from the dynamic upgrades the M4 CS is also the recipient ...

a better-flowing titanium exhaust system, and a cold-air intake. CarBahn’s CB3 Signature Package turns the BMW M4 Competition xDrive into a carbon-fiber-clad tour de force. Drew Phillips ...