Mercedes Downpipes – Catted & Decat Performance Exhaust Upgrades

Mercedes Downpipes – Unlock the True Potential of Your Engine

From the compact A-Class AMG to the luxurious S-Class and the high-performance AMG GT, modern Mercedes-Benz models deliver outstanding engineering and power. However, restrictive OEM downpipes limit exhaust flow, turbo efficiency, and tuning potential. Upgrading to a performance Mercedes downpipe is one of the most effective modifications to unleash hidden horsepower, improve throttle response, and enhance your exhaust note.

Why Upgrade to a Performance Mercedes Downpipe?

Factory downpipes are designed to meet emissions and noise regulations, but this often restricts power and responsiveness. A performance downpipe offers several advantages:

• +25–70 HP on turbocharged petrol and diesel engines.
• +80–120 HP when combined with Stage 2 ECU remapping.
• Faster turbo spool – reduced backpressure results in quicker boost response.
• Lower exhaust gas temperatures – better efficiency under heavy loads.
• Enhanced exhaust tone – catted for a smooth sporty note, decat for an aggressive motorsport roar.

Types of Mercedes Downpipes

We offer a wide selection of Mercedes downpipes tailored to various performance levels and driving styles:

Catted Mercedes Downpipes

Catted downpipes integrate a high-flow sports catalytic converter, offering improved exhaust flow while maintaining emissions compliance. Perfect for daily-driven AMG builds in regions with strict testing.

Decat Mercedes Downpipes

Decat downpipes remove the catalytic converter entirely, maximizing flow and performance. Ideal for track-focused cars, dyno tuning, and high-power AMG builds.

Material Options: Stainless Steel & Titanium

The material you choose for your Mercedes downpipe impacts weight, durability, and heat resistance:

• Stainless steel downpipes – durable, corrosion-resistant, and cost-effective.
• Titanium downpipes – ultra-lightweight, premium motorsport finish, and superior thermal efficiency.

Mercedes Models & Engine Compatibility

Our Mercedes downpipes are engineered for a wide range of platforms and engine configurations:

• Mercedes A45 AMG Downpipes – optimized for 2.0T M133 / M139 turbocharged engines.
• Mercedes CLA45 AMG Downpipes – designed for compact AMG sedans and shooting brakes.
• Mercedes C63 AMG Downpipes – engineered for 4.0 BiTurbo V8 M177 setups.
• Mercedes E63 AMG Downpipes – tailored for high-output 4.0 BiTurbo AMG performance.
• Mercedes AMG GT Downpipes – available for GT, GTS, GTR, and Black Series models.
• Mercedes GLC43 / GLC63 Downpipes – compatible with AMG 3.0 V6 BiTurbo and 4.0 V8 BiTurbo engines.
• Mercedes GLE53 / GLE63 Downpipes – optimized for SUV AMG performance builds.
• Mercedes S63 AMG Downpipes – designed for luxury flagships with 4.0 BiTurbo powerplants.
• Mercedes C-Class / E-Class / S-Class Downpipes – tailored for 2.0T, 3.0T, and diesel variants.
• Mercedes GLA45 AMG Downpipes – for compact high-performance SUV tuning.

Performance Gains with Mercedes Downpipes

Installing a performance Mercedes downpipe delivers measurable results:

• +25–70 HP on stock turbo setups.
• +80–120 HP when combined with Stage 2 ECU mapping.
• Faster throttle response and reduced turbo lag.
• Optimized torque delivery and better top-end performance.

Stage 1, Stage 2 & Hybrid Turbo Builds

Mercedes turbocharged engines respond exceptionally well to exhaust upgrades when paired with ECU tuning:

• Stage 1 – catted downpipe + ECU remap for safe, balanced gains.
• Stage 2 – decat downpipe + intercooler + custom mapping for maximum performance.
• Hybrid turbos – 3.0–3.5 inch downpipes for extreme AMG builds.

Choosing the Right Diameter

Pipe diameter is critical for optimizing performance:

• 2.5-inch downpipes – best for Stage 1 setups and mild tuning.
• 3.0-inch downpipes – recommended for Stage 2, hybrid turbo, and high-boost builds.

All Mercedes downpipes are designed for direct bolt-on installation with OEM-style flanges for seamless fitment.

Build Quality & Engineering

Our performance Mercedes downpipes are manufactured using motorsport-grade techniques:

• Mandrel-bent tubing ensures smooth, unrestricted exhaust flow.
• Precision TIG welding provides maximum strength and durability.
• OEM-style gaskets and fittings ensure leak-free installation.
• Optional ceramic coatings improve thermal management.

Tuning Potential

Pairing your Mercedes downpipe with ECU tuning unlocks its full performance capabilities:

• Significant horsepower and torque increases.
• Improved turbo efficiency and optimized fueling strategies.
• Customizable exhaust sound depending on catted or decat configuration.
• Essential for Stage 2 and Stage 3 AMG builds.

Catted vs Decat – Which Option Should You Choose?

The choice depends on your goals and usage:

• Catted downpipes – perfect for street-driven cars needing emissions compliance and refined tone.
• Decat downpipes – ideal for track-focused and high-performance AMG builds demanding maximum flow.

Conclusion

Upgrading to a performance Mercedes downpipe is one of the most effective ways to unlock more power, improve turbo efficiency, and enhance exhaust tone. Whether you choose a catted downpipe for street usability or a decat downpipe for ultimate AMG performance, our range guarantees premium quality, precise fitment, and proven gains. Take your Mercedes to the next level today.