MSL Performance 3.5" Decat Downpipes for C63 & C63S AMG W205

MSL Performance 3.5″ Decat Downpipes for C63 & C63S AMG (W205)

Let’s be honest, you own a monster. The W205 C63, with its 4.0-litre “hot-vee” Bi-Turbo V8, is a masterpiece of modern muscle. But its single biggest flaw is how muffled it sounds from the factory. The standard catalytic converters, buried deep in the V of the engine, are incredibly restrictive. They are designed to choke the engine for emissions, and in doing so, they kill the sound, restrict horsepower, and stifle the twin turbos.

It’s time to uncage the beast. Our 3.5-inch MSL Performance Decat Downpipes are the single most effective hardware upgrade you can make to transform your C63.

By completely removing the restrictive primary catalysts, these pipes create a massive, free-flowing 3.5-inch path for the exhaust gasses to escape. This allows the twin turbos to spool with lightning speed and the M177 engine to exhale with zero restriction. The result is a total transformation in sound, power, and response.

Key Features & Benefits:

• Unleashes the True V8 Roar: This is the upgrade you’ve been waiting for. It completely uncorks the M177 engine, releasing a dramatic increase in volume, a deep, aggressive V8 bark, and a savage barrage of pops, crackles, and bangs on the overrun. This is how your C63 was always meant to sound.
• Unlocks Full Stage 2 Performance: These downpipes are the essential component required for our Stage 2 remap. The free-flowing design removes all back-pressure, allowing us to safely dial up the boost and unlock a massive increase in horsepower and torque, pushing your C63 into true supercar territory.
• Faster Turbo Spool & Throttle Response: With back-pressure eliminated, your turbos spool instantly. The car feels more alive, more responsive, and relentlessly powerful through the entire rev range.
• Premium “Hot-Vee” Construction: Precision engineered from high-grade T304L stainless steel, fully TIG-welded and back-purged for maximum strength. These are built to withstand the extreme, focused heat generated inside the “hot-vee” layout.
• Direct Bolt-On Fit: Designed to be a perfect, 100% bolt-on replacement for the factory downpipes, ensuring a straightforward installation.

Fitment:

• Mercedes-AMG C63 (W205 Saloon)
• Mercedes-AMG C63S (W205 Saloon)
• Mercedes-AMG C63 (S205 Estate)
• Mercedes-AMG C63S (S205 Estate)
• Mercedes-AMG C63 (C205 Coupé)
• Mercedes-AMG C63S (C205 Coupé)
• Mercedes-AMG C63 (A205 Cabriolet)
• Mercedes-AMG C63S (A205 Cabriolet)

CRITICAL INFORMATION:

• A Stage 2 ECU remap is ESSENTIAL after installation. This is required to optimise performance, adjust for the new airflow, and prevent any engine management lights (CEL) from appearing.
• This product removes the primary catalytic converters. It is therefore intended for motorsport, track, or off-road use only.