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Our Factory Matching Warranty
CarBahn offers a factory matching warranty on our ECU tunes to give you peace of mind.
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Tuning Cars Since 1977
Steve Dinan and his team have been tuning BMWs, Audis, and Mercedes for almost a half a century with industry leading engineering.
#WeSpeakSpeed
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U.S. Based Sales & Support
Our team offices in Littleton, Colorado & San Jose, California. Let's talk shop!
New products from Steve Dinan
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Brake Beast - Wheel & Tire Cleaner 16oz
Regular price From $19.99Regular priceUnit price / per -
Stage 3 S58 Engine High Performance (B30A) BMW M2/M3/M4 RWD
FITS YOUR VEHICLE:BMW-M2-2023 BMW-M2-2024 BMW-M2-2025 bmw-m3-2021 bmw-m3-2022 bmw-m3-2023 bmw-m3-2024 bmw-m3-2025 BMW-M4-2021 BMW-M4-2022 BMW-M4-2023 BMW-M4-2024 BMW-M4-2025 - Fits Make: BMW
- Fits Models: M2, M3 Competition, and M4 Competition
- Fits Chassis: G87, G80, and G82
- Fits Years: 2021 - 2025
- Fits Engines: S58
- Part Number: CBS58-6032
Regular price $17,995.50Regular priceUnit price / per$19,995.00Sale price $17,995.50Sale -
High-Performance Engine Oil Cooler | BMW F1X M5/M6 & F9X M5/M8
- Fits Make: BMW
- Fits Models: M5, M5 Competition, M6, M6 Competition, M850i, M850i xDrive, M8, and M8 Competition
- Fits Chassis: F06, F10, F12, F13, F90, F91, F92, F93, and G15
- Fits Years: 2012 - 2025
- Fits Engines: S63
Regular price $699.00Regular priceUnit price / per -
Stage 3 3.0L S58 High Performance Engine (B30A) BMW X3M/X4M
FITS YOUR VEHICLE:BMW-X3M-2021 BMW-X3M-2022 BMW-X3M-2023 BMW-X3M-2024 BMW-X4M-2021 BMW-X4M-2022 BMW-X4M-2023 BMW-X4M-2024 S58 Engine - Fits Make: BMW
- Fits Models: X3 M, X4 M, X3 M Competition, and X4 M Competition
- Fits Chassis: F97 and F96
- Fits Years: 2021 - 2025
- Part Number: CBS58-6031
Regular price $17,995.50Regular priceUnit price / per$19,995.00Sale price $17,995.50Sold out -
Stage 3 3.0L S58 High Performance Engine (B30A xDrive) BMW M3/M4
FITS YOUR VEHICLE:bmw-m3-2021 bmw-m3-2022 bmw-m3-2023 bmw-m3-2024 bmw-m3-2025 BMW-M4-2021 BMW-M4-2022 BMW-M4-2023 BMW-M4-2024 BMW-M4-2025 S58 Engine - Fits Make: BMW
- Fits Models: M3 Competition and M4 Competition
- Fits Chassis: G80, G82, and G83
- Fits Years: 2021 - 2025
- Part Number: CBS58-6033
Regular price $17,995.50Regular priceUnit price / per$19,995.00Sale price $17,995.50Sale -
Carbon Fiber Aerodynamic Package | BMW G87 M2
- Fits Make: BMW
- Fits Models: M2
- Fits Chassis: G87
- Fits Years: 2023 - 2025
Regular price $3,150.00Regular priceUnit price / per$3,505.00Sale price $3,150.00Sold out -
Intake Silencer Delete Kit | BMW B58 G2X M240i/M340i/M440i/Z4M40i
- Fits Make: BMW
- Fits Models: M240i, M340i, M440i, Z4 M40i, M240i xDrive, and M340i xDrive
- Fits Chassis: G20, G22, G26, G29, and G42
- Fits Years: 2020 - 2024
- Fits Engines: B58
- Part Number: CBB04-20-0511
Regular price $50.00Regular priceUnit price / per -
529 HP Stage 1 Software | Audi B9 RS5
FITS YOUR VEHICLE:Audi-RS5-2018 Audi-RS5-2019 Audi-RS5-2020 Audi-RS5-2021 Audi-RS5-2022 Audi-RS5-2023 Audi-RS5-2024 New - Fits Make: Audi
- Fits Models: RS5
- Fits Chassis: B9
- Fits Years: 2018 - 2024
Regular price From $995.00Regular priceUnit price / per$995.00Sale price From $995.00 -
773 HP Stage 2 Software | EVO Smooth Power | Audi C8 RS6/RS7
- Fits Make: Audi
- Fits Models: RS6 and RS7
- Fits Chassis: C8
- Fits Years: 2021 - 2023
- Part Number: CBA11-SW-0052
Regular price From $1,195.00Regular priceUnit price / per$1,195.00Sale price From $1,195.00 -
711 HP Stage 1 Software | EVO Smooth Power | Audi C8 RS6/RS7
- Fits Make: Audi
- Fits Models: RS6 and RS7
- Fits Chassis: C8
- Fits Years: 2021 - 2023
- Part Number: CBA11-SW-0051
Regular price From $750.00Regular priceUnit price / per$995.00Sale price From $750.00Sale -
683 HP Stage 1 Performance Controller | Audi C8 RS6/RS7
- Fits Make: Audi
- Fits Models: RS6 and RS7
- Fits Chassis: C8
- Fits Years: 2021 - 2023
- Part Number: CBA11-PC-0051
Regular price From $795.00Regular priceUnit price / per -
728 HP Stage 2 Performance Controller | Audi C8 RS6/RS7
- Fits Make: Audi
- Fits Models: RS6 and RS7
- Fits Chassis: C8
- Fits Years: 2021 - 2023
- Part Number: CBA11-PC-0052
Regular price From $995.00Regular priceUnit price / per -
Stage 1 Performance Controller | Audi B9 S4/S5/SQ5
- Fits Make: Audi
- Fits Models: S4, S5, and SQ5
- Fits Chassis: B9
- Fits Years: 2018 - 2024
- Part Number: BA11-PC-0101
Regular price From $795.00Regular priceUnit price / per -
Carbon Fiber Engine Chassis Brace Set | BMW X3/X4
- Fits Make: BMW
- Fits Models: X3 M40i, X4 M40i, X3 M, and X4 M
- Fits Years: 2018 - 2024
- Part Number: CBB12-00-0531
Regular price $500.00Regular priceUnit price / per -
Stainless Steel Brake Line Front & Rear Package | BMW X3M/X4M
- Fits Make: BMW
- Fits Models: X3 M, X3 M Competition, X4 M, and X4 M Competition
- Fits Chassis: F97 and F98
- Fits Years: 2020 - 2024
Regular price $185.00Regular priceUnit price / per -
Stainless Steel Brake Line Front & Rear Package | BMW F9X M5/M8
- Fits Make: BMW
- Fits Models: M5, M5 Competition, M5 CS, M8, and M8 Competition
- Fits Chassis: F90, F91, F92, and F93
- Fits Years: 2017 - 2024
Regular price $200.00Regular priceUnit price / per -
Stainless Steel Brake Line Front & Rear Package | BMW F8X M2/M3/M4
- Fits Make: BMW
- Fits Models: M2, M2 Competition, M2 CS, M3, M3 Competition, M3 CS, M4, M4 Competition, M4 CS, and M4 GTS
- Fits Chassis: F87, F80, F82, and F83
- Fits Years: 2015 - 2020
Regular price $185.00Regular priceUnit price / per -
Stainless Steel Brake Line Front & Rear Package | BMW G8X M3/M4
- Fits Make: BMW
- Fits Models: M3, M3 Competition, M3 Competition xDrive, M3 CS, M4, M4 Competition, M4 Competition xDrive, and M4 CSL
- Fits Chassis: G80, G82, and G83
- Fits Years: 2021 - 2024
Regular price $175.00Regular priceUnit price / per -
Stainless Steel Rear Brake Lines | BMW F8X M2/M3/M4
- Fits Make: BMW
- Fits Models: M2, M2 Competition, M2 CS, M3, M3 Competition, M3 CS, M4, M4 Competition, and M4 CS
- Fits Chassis: F87, F80, F82, and F83
- Fits Years: 2015 - 2020
- Part Number: CBB16-00-1521
Regular price $80.00Regular priceUnit price / per -
Stainless Steel Rear Brake Lines | BMW X3M/X4M
- Fits Make: BMW
- Fits Models: X3 M, X3 M Competition, X4 M, and X4 M Competition
- Fits Chassis: F97 and F97
- Fits Years: 2020 -2024
- Part Number: CBB16-00-2285
Regular price $80.00Regular priceUnit price / per
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Garage Talk with Steve Dinan

About Steve Dinan's New Company CarBahn
CarBahn, founded by Steve Dinan, is the premier destination for BMW, Audi, and Mercedes tuning, engines, and aftermarket parts.
With a passion for performance and precision engineering, CarBahn specializes in enhancing the driving experience of BMW enthusiasts worldwide. Steve Dinan’s expert team meticulously crafts high-quality upgrades, from engine modifications to suspension enhancements, ensuring optimal performance and reliability.
Whether you’re seeking increased horsepower, improved handling, or simply a personalized touch to your BMW, CarBahn delivers unparalleled expertise and cutting-edge solutions. Explore CarBahn’s comprehensive range of products and services to elevate your driving experience to new heights. Shop CarBahn.com today or visit an authorized dealer to get the perfect upgrade.
When it comes to BMW tuning & suspension, CarBahn stands out as the best in the industry. With a team of highly skilled technicians and engineers, CarBahn offers unparalleled expertise in BMW performance tuning. Whether you’re looking to enhance your BMW’s horsepower, torque, or overall driving experience, CarBahn’s state-of-the-art tuning solutions deliver exceptional results. Our commitment to quality and precision ensures that every BMW we tune performs at its peak potential. Trust CarBahn for the best BMW tuning services, and experience the ultimate in performance and reliability. Learn more about our comprehensive BMW tuning & suspension options and take your driving experience to the next level.