Audi RS3 8V / TTRS 8S EA855 EVO Turbo Inlet 4 Inch (102 mm) – High-Performance CNC Aluminum Upgrade

This 4-inch (102 mm) turbo inlet has been specifically developed for the Audi 5-cylinder EA855 EVO engines (DAZA / DNWA). Designed to replace the restrictive factory component, this high-performance inlet made from CNC-machined cast aluminum ensures maximum strength, perfect fitment, and significantly improved airflow. It is the ideal solution for drivers aiming for more power and efficiency in both street and motorsport applications.

Why upgrade to a 4-inch turbo inlet?

The OEM turbo inlet on the Audi RS3 and TTRS creates a bottleneck in the intake system, especially once tuning or larger turbochargers are installed. This 102 mm turbo inlet eliminates that restriction, increasing airflow by up to 45% compared to stock. The results are faster spool times, improved throttle response, higher efficiency, and more power – providing the perfect foundation for serious performance builds.

Key Benefits

• Up to 45% more airflow vs. OEM inlet
• Improved throttle response & faster boost build-up
• Greater efficiency for both stock and tuned setups
• Perfect for motorsport and high-performance upgrades
• Made from CNC-machined cast aluminum – durable & heat-resistant
• Precision fitment with maximum stability
• Adapter ring for stock turbo included

Technical Specifications

• Internal diameter: 4 inch / 102 mm
• Material: CNC-machined cast aluminum
• Airflow: up to 45% more vs. OEM
• Compatibility: 2.5 TFSI R5 EA855 EVO (DAZA / DNWA)
• Vehicles: Audi RS3 8V & Audi TTRS 8S
• Power output: 400 HP (OEM) – designed for tuned applications
• Model years: 04/2017 – 10/2020

Who is this inlet for?

This 4-inch inlet is designed for enthusiasts who want to push their Audi RS3 or TTRS beyond factory limits. Suitable for ECU-tuned cars as well as big turbo conversions, it offers substantial improvements in airflow and performance. For motorsport use, where every bit of airflow matters, this inlet provides the reliability and efficiency needed to unlock maximum potential.

Installation & Fitment

The CNC-machined construction ensures precise fitment and easy installation. A dedicated adapter ring is included for use with the stock turbo, while compatibility with aftermarket intakes allows seamless integration into performance builds. Professional installation is recommended for optimal results.

Included in the Box

• 4-inch (102 mm) turbo inlet – CNC-machined aluminum
• Adapter ring for stock turbo
• Required mounting hardware

Note

The turbocharger / compressor housing is not included. This part replaces only the OEM turbo inlet.

Conclusion

The 4-inch (102 mm) turbo inlet for the Audi RS3 8V and TTRS 8S (EA855 EVO) is the ultimate upgrade for drivers who want more airflow, power, and efficiency. With up to 45% more flow, improved response, and CNC-machined durability, this inlet provides the perfect basis for future performance modifications and motorsport use.