CTS Turbo Stage 2+ Turbocharger Upgrade for BMW M2C/M2CS/M3/M4 with S55 engine

The CTS Turbo Stage 2+ Turbocharger Upgrade transforms the factory twin-turbo setup in S55-equipped BMW M vehicles. Designed for M2 Competition, M3 F80 and M4 F82 platforms from 2015 onwards, this upgrade delivers improved airflow capacity to complement advanced ECU tuning and supporting modifications. CTS Turbo engineers these units with uprated internals to handle increased boost levels while maintaining reliable operation. Ideal for serious builds targeting substantial performance gains beyond Stage 1 hardware limitations, this turbocharger upgrade unlocks the true potential of BMW's inline-six powerplant.