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BMW M240i/M340i/M440i CarBahn B58 Signature Package

Build The B58 BMW Should Have.

Thirteen carefully selected upgrades spanning power, cooling, airflow, exhaust, suspension, chassis and carbon fiber.

No random collection of parts. No stopping halfway. One complete B58 performance package.

 

 

Adding horsepower is the easy part. Building a complete performance car takes more. The B58 Signature Package goes beyond engine calibration to address thermal management, airflow, exhaust, suspension geometry, chassis response and carbon-fiber finishing.


The result isn't simply a faster M240i, M340i or M440i. It's a more complete one — faster in a straight line, sharper in a corner, more composed when pushed and unmistakably CarBahn.


Start With The Heart

Power

More power is easy. Repeatable power is engineering. Stage 2 calibration and substantially increased charge-air cooling give the B58 the foundation it needs to perform when the road — and the temperatures — start fighting back.



Let The B58 Breathe

Airflow & Exhaust

Get air in. Get exhaust out. Then make the process look and sound significantly better while you're at it. The Signature Package opens both sides of the B58's breathing system.



Power Means Nothing Without Control

Suspension & Chassis

Horsepower gets the headlines. Chassis work is what makes the entire car feel expensive. Lower center of gravity, tighter geometry, reduced deflection and more immediate response.



Finish The Damn Car

Aero & Cosmetics

Performance shouldn't disappear when the car is parked. Carbon accents and subtle finishing pieces complete the build without burying the original BMW design under unnecessary theater.

 


The History of How We Got Started

CARBAHN Autoworks is led by Steve Dinan, a luxury car enthusiast just like you. His vast experience with high-powered BMW performance is more than just a hobby. He even took his BMW expertise to the race track, where he gained firsthand knowledge about maximizing your BMW’s potential. From behind the wheel of a BMW, he’s gained a more in-depth knowledge and understanding of how to maximize their performance and potential. CARBAHN Autoworks reputation for unmatched technical knowledge and attention to detail builds from a lifetime in the auto service industry. In fact, it’s our exceptional service, state-of-the-art diagnostic technology, and competitive pricing that make CARBAHN Autoworks the premier alternative to dealer service for complete BMW and Mercedes repair. As an automotive and race engineer Steve’s passion for these superior vehicles translates into a deep understanding of, and intense commitment to how they perform. In 1979, he started the largest company in North America dedicated to BMW high performance (Dinan Engineering). He was acting CEO and Technical Director for 36 years. Dinan secured a contract with BMWNA in 1997 and is the only company that has approval to sell their product out of BMW dealers. Sixteen years as a racing driver retiring from driving in 1996. A racing chassis engineer for 10 years. A racing engine supplier for 10 years. Steve Dinan has won 11 championships including two 24 hours of Daytona!