AMG 45 RSS

2.0T, 200-Cell Downpipes, 400-Cell Downpipes, A45, AMG 45, Bahrain, C117, Catless Downpipes, CLA45, Downpipe, Downpipes, ECU Tuning, Exhaust Upgrade, GCC Tuning, GESI, GLA45, High-Flow Catted, Kuwait, Lifetime Warranty, M133, Mercedes-AMG, Oman, Performance, Power Gains, Qatar, Saudi Arabia, Stage 2, Turbo Inline-4, UAE, W176, X156, YPG Motorsport - September 21, 2026

Mercedes-AMG A45, CLA45 & GLA45 Downpipe Guide — Catless, 200-Cell & 400-Cell | M133 2.0T | Power Gains, Sound & Installation

The Mercedes-AMG 45-series — A45, CLA45, and GLA45 — packs a remarkable amount of performance into a compact package. The M133 2.0-liter turbocharged inline-4 was the most powerful series-production four-cylinder engine in the world when it launched, and it remains one of the most tunable platforms in the AMG lineup. A single downpipe replacement is the highest-impact bolt-on modification you can make to this engine.This guide covers everything you need to know about upgrading the downpipe on your M133-powered AMG: catless versus high-flow catted options, real-world power gains, exhaust sound transformation, fitment across all 45-series models, and why an ECU...

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