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A CarBahn-Tuned BMW M4 Competition xDrive in Photos
Driving a CarBahn-tuned BMW M4 Competition xDrive. CarBahn’s CB3 Signature Package turns the BMW M4 Competition xDrive into a ...
First Drive: This Tuned BMW M4 Is More Nimble and Forceful on the Road
The Northern California–based CarBahn gives the BMW M4 Competition xDrive an aftermarket makeover that builds on an ...
First Drive: CarBahn Amplifies the BMW M4 Experience. Here’s How.
CarBahn gives the BMW M4 Competition xDrive an aftermarket makeover that builds on an already-impressive model.