Mercedes A45s AMG Stage 2 Package | Downpipe And OPF Delete + Stage 2 Custom Tune 500 BHP

The Narkos Performance Stage 2 Package for the Mercedes-AMG A45S and CLA45S is engineered for drivers looking to unlock serious power, sharper throttle response, and an aggressive exhaust note—without compromising reliability.

At the heart of this upgrade is the Narkos Heat-Shielded High-Flow Downpipe, designed to significantly improve exhaust flow while reducing under-bonnet temperatures. Paired with a bespoke Narkos Performance ECU calibration, this package transforms the already potent M139 engine into a true performance weapon.

With all labour fully included in the price, this is a complete, hassle-free Stage 2 solution.

Performance Gains

• 500–520 BHP

• Substantial torque increase

• Faster spool and improved mid-range pull

• Sharper throttle response

Stage 2 Package Includes

• Narkos Performance Heat-Shielded High-Flow Downpipe

• Custom Narkos ECU Tune tailored to the vehicle

• Full professional installation

• Pre- and post-install health checks

Sound & Driving Experience

• Significantly louder and more aggressive exhaust tone

• Enhanced turbo sound

• Optional overrun pops & bangs (switchable on request)

• Sportier driving feel in all modes

Why Choose Narkos Performance?

• Developed specifically for the M139 AMG platform

• Safe, reliable power delivery

• Custom tuning – not off-the-shelf software

• Proven results on road and dyno

If You have Any questions please Whatsapp on +44 7917867252, We may be able to help you there further.