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.