Akrapovič Mercedes A 45/A 45S/CLA 45/CLA 45S/GLA 45/GLA 45S (W177/C118/X118/H247) OPF/GPF Sport Cat Downpipe
The Downpipe with Cat (SS) is a high-performance addition developed and tested specifically for use with the Evolution Line (Titanium) exhaust system. This upgrade is designed for track enthusiasts looking to push their vehicle’s performance to the next level. The system includes a high-flow 200 CPSI sport catalytic converter, which eliminates the Otto/gasoline particulate filter (OPF), resulting in a significant boost in sound and performance. This upgrade is ideal for creating a pure racing sound from the engine, giving drivers a heightened sensory experience.
Key Features:
- Enhanced Sound: The downpipe delivers a noticeable increase in sound levels, starting with a deep, powerful tone in the lower and mid rev ranges and evolving into a high-rev, race-inspired acoustic experience. Gear shifts are accentuated by sharp crackling sounds, while deceleration delivers a thrilling burble, especially in sport mode.
- Performance Gains: By eliminating the OPF, this upgrade provides a more efficient gas flow, contributing to enhanced performance, particularly at high revs.
- Track-Oriented: Despite its focus on racing performance, the system maintains comfort during everyday driving in Comfort mode, without any unwanted noise or drone in the cabin.
Important Installation Notes:
- Mandatory ECU Remapping: After installing the downpipe, ECU remapping is required to prevent “check engine light” warnings and to optimize performance.
- Fitment Notice: This product is not compatible with 2021 vehicles equipped with an Otto/gasoline particulate filter (OPF).
Compliance Warning:
- This product does not meet emission compliance requirements for street or highway use. It is intended for track and closed-course use only.
By adding this downpipe to the Evolution Line system, drivers can experience the full potential of their vehicle’s performance while enjoying a distinct and exhilarating sound.

