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CarBahn BMW Engine Program

Built For Your BMW. Engineered For Your Goals.

From refined street builds to serious high-horsepower engine programs, CarBahn performance engines are developed around your platform, turbo system, fuel type, and intended use. Explore expertly engineered solutions for BMW B58, S55, S58, S63, S68, and S85 applications — backed by decades of BMW performance experience led by Steve Dinan.

Browse Engines or call (866) 558-4314 to speak with a specialist

Free Engine Consultation

Tell us about your build goals

1

Choose Your Platform

Select your BMW engine family and explore the right build path for your goals.

2

Free Build Consultation

We review fitment, power goals, turbo setup, fuel type, and intended vehicle use.

3

Core & Build Planning

We confirm your core strategy, pricing, refresh kit needs, and any platform-specific requirements.

4

We Build Your Engine

Your engine is machined, assembled, and configured around the demands of your specific application.

5

Ship For Installation

Your completed engine ships to your preferred dealer, installer, or qualified performance shop.

Choose The Engine Program That Matches Your Build

CarBahn engine programs are built around how the vehicle will actually be used. Some platforms offer all three lanes, while others are focused on Street and Race only. In general, OEM+ is the most refined road-car path, Street is designed for higher-output performance builds, and Race is reserved for maximum-effort applications.

OEM+ Refined Road-Car Program

OEM+ Engines

Designed for strong street performance with the greatest emphasis on drivability and refinement

The most road-focused engine program in the lineup.

Best For Customers who want a stronger engine foundation for daily-driven or premium street builds without giving up the character of a well-sorted road car.

Warranty Position Road-car oriented warranty coverage when paired with the correct tune, torque target, and supporting components for the specific platform.

Investment Level Typically the most accessible engine program where offered.

Street High-Output Performance Program

Street Engines

Built for higher-output street performance with more headroom for boost, load, and sustained use

The most common path for serious street and dual-purpose builds.

Best For Customers targeting meaningful horsepower gains with upgraded turbo systems, stronger internals, and a build path that still supports real-world street use.

Warranty Position Road-car warranty coverage may still apply, but always depends on platform, tune, torque limits, and supporting hardware.

Investment Level Mid-tier to premium pricing depending on engine family and configuration.

Race Maximum-Output Competition Program

Race Engines

Configured for maximum cylinder pressure, sustained load, and the most aggressive power goals

The highest-capability engine program in the CarBahn lineup.

Best For Dedicated track, competition, or maximum-horsepower builds where outright durability and performance take priority over road-car compromise.

Warranty Position Materials and workmanship only. Race engines are intended for competition or extreme-output use and should be serviced accordingly.

Investment Level Highest overall investment level with the most aggressive internal components, machining, and supporting requirements.

Program availability varies by engine family. Some platforms offer OEM+, Street, and Race, while others are intentionally focused on Street and Race only. Final recommendations should always be based on platform, fuel type, turbo system, intended use, and overall build strategy.

Shop by Engine Platform

CarBahn builds complete engines for the most popular BMW and M powertrains. Choose your platform below to see available Stage 1, Stage 2, and racing engine programs.

S58 engine thumbnail
Inline-6 Turbo

S58 Engines

G80 M3 • G82/G83 M4 • G87 M2

Built for modern M cars that demand extreme torque, rapid spool, and track-capable reliability.

View S58 Engines
S63 engine thumbnail
Twin-Turbo V8

S63 Engines

F9X X5M/X6M • F90 M5 • F91/F92/F93 M8

High-output V8 programs for heavy-hitting street and track builds with massive torque potential.

View S63 Engines
S55 engine thumbnail
Inline-6 Turbo

S55 Engines

F80 M3 • F82/F83 M4 • F87 M2 Competition

Proven M platforms supported with race-bred internals and tuning headroom for serious power.

View S55 Engines
B58 engine thumbnail
Inline-6 Turbo

B58 Engines

M240i • M340i • M440i and related B58 applications

Street-focused performance builds with the headroom and durability to support advanced tuning.

View B58 Engines
S85 engine thumbnail
Naturally Aspirated V10

S85 V10 Engines

E60 M5 • E63/E64 M6

Iconic high-revving V10 programs for enthusiasts preserving or elevating BMW’s most exotic M powerplant.

View S85 Engines
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Additional BMW / M Platforms

Other Engines

N55 • legacy platforms • special projects

Have a specific BMW or M engine in mind? Contact our team to discuss availability, custom programs, or upcoming applications.

Talk to an Engine Specialist

Engine Warranty & Additional Information

OEM+ & Street Engines

Road-Car Programs
Coverage: 2 years / 24,000 miles when applicable

OEM+ and Street engines are designed for road-car use and may qualify for 2 years / 24,000 miles of coverage when paired with the appropriate CarBahn tune, torque target, and supporting components for the specific engine family.

What Coverage Depends On:

  • Running a CarBahn-approved tune where required
  • Remaining within the recommended torque limits for that engine program
  • Using the proper fuel system, turbo system, and supporting hardware for the application
  • No other vehicle components causing the premature failure

Important:

  • Some platforms offer OEM+, Street, and Race, while others are Street / Race only
  • Coverage may be reduced to materials and workmanship only if torque limits are exceeded
  • Failures caused by non-approved tuning, fueling, turbo systems, or supporting components are not covered
  • Final warranty determination is made by CarBahn based on the application and failure analysis

Race Engines

Competition / Extreme Output
Coverage: Materials & workmanship only

Race engines are designed for competition or maximum-output applications where cylinder pressure, load, and overall operating stress exceed the expectations of a typical road-car program.

What’s Included:

  • Materials and workmanship defects on the initial engine build
  • Precision machining, assembly validation, and component-fit processes

What’s Not Covered:

  • Failures caused by tuning, detonation, calibration error, or fuel system issues
  • Damage related to boost pressure, RPM, heat cycles, load, or competition stress
  • Failures caused by turbo systems, ignition systems, or other supporting components
  • Normal service, wear, or rebuild intervals associated with race-oriented use

Race engines should be inspected and serviced periodically based on runtime, mileage, and operating conditions.

WARRANTY LABOR COVERAGE

CarBahn's sole obligation under this warranty is the repair or replacement of covered component(s), at CarBahn's sole discretion. Warranty coverage applies to covered parts and components only. Labor associated with diagnosis, removal, installation, reinstallation, shipping, towing, or related services is not covered unless the engine was originally installed by CarBahn. CarBahn will not reimburse third-party labor charges or related expenses.

Note: Racing engines are not legal for sale or use in California on any pollution controlled motor vehicle.
Racing engines may also not be legal in your state. Please check your local laws prior to purchase or installation.

Coverage, legality, and final engine recommendations vary by platform. Always review the specific engine-family page and consultation details for OEM+, Street, and Race availability, torque limits, core requirements, and build-specific warranty terms.