Stage 2 B58 Performance
The B58 responds spectacularly to the right calibration and supporting hardware. On 100 octane, CarBahn Stage 2 delivers 513 HP and 570 lb-ft at the flywheel — backed by 421 horsepower at the wheels.
The Numbers Don't Lie
Choose your fuel. Unlock the corresponding calibration. Either way, the difference from stock is substantial.
The Full Build
Start With The Heart
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.
CarBahn Stage 2 calibration transforms the B58 with substantially increased output while retaining the refinement, drivability and engineering discipline expected from a modern BMW.
Power means heat. Increased cooling capacity helps control charge temperatures so the B58 can keep delivering when repeated pulls, canyon runs and summer temperatures expose lesser setups.
Let The B58 Breathe
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.
Increased airflow meets motorsport-inspired carbon fiber. Sharpen the intake side of the B58 while turning the engine bay into something worth opening the hood for.
Give the B58 the voice it should have had from the factory. A freer-flowing stainless system adds character, aggression and presence without turning the car into a one-note noise machine.
Power Means Nothing Without Control
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.
Lower the stance and sharpen the chassis without forgetting this is still a BMW. Developed for more control, more confidence and a properly aggressive ride height.
Adjustable links allow the suspension system to operate correctly at the new ride height while helping deliver more precise chassis response.
Reduce compliance where precision matters. Monoballs deliver more immediate steering response, improved feedback and a noticeably more connected front end.
More precise rear suspension geometry improves stability, alignment control and confidence when the chassis is loaded.
Functional chassis reinforcement rendered in carbon fiber. Because structural performance doesn't need to look industrial.
Finish The Damn Car
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.
Small hardware. Big difference when you're sweating the details. A subtle finishing touch throughout the engine bay.
Clean, purposeful and aggressive without turning the rear deck into a science project. Exactly enough carbon.
Open the hood and make the statement again. Lightweight, motorsport-inspired dry carbon gives the B58 engine bay the centerpiece it deserves.
One Car. One System.
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.
Because Stock Is A Temporary Condition
The Signature Package is the foundation. These optional upgrades let you push thermal capacity, chassis adjustability, appearance and protection even further. Optional upgrades are priced separately and are not included in the Signature Package price or package discount.
Upgrade the ignition system with CarBahn coils engineered for high-output BMW applications.
Add front camber adjustment for drivers looking to optimize alignment, front-end grip and track performance.
Finish the exhaust with carbon fiber tips that give the rear of the car a more purposeful visual edge.
Add another level of confidence to your performance build with available CarBahn warranty protection.
Additional thermal capacity for drivers who repeatedly push the drivetrain hard in demanding conditions.
Increase engine oil cooling capacity for demanding street, mountain and track use where thermal management becomes critical.
CarBahn B58 Signature Package
Up to 513 HP. 570 lb-ft. Cooling, airflow, exhaust, suspension, chassis and carbon — developed as one complete build for the BMW M240i, M340i and M440i.
Build Your Signature Package