Mercedes W176/C117, A45/CLA45 AMG Catted Downpipe With Heat Shield

Free up your Mercedes-AMG A45 or CLA45 without giving up emissions control entirely. This catted performance downpipe replaces the restrictive factory unit with a high-flow sports catalytic converter and full woven heat shielding, delivering most of the gain of a catless pipe while keeping a working catalyst in the system.

Manufactured from premium T304 stainless steel and precision TIG welded throughout, it is the sensible choice for a daily driven car. The sports catalyst keeps the exhaust note cleaner and considerably less raspy than a catless pipe, and dramatically reduces the chance of a check engine light or a failed visual inspection.

Key Features

High-Flow Sports Catalytic Converter
A far less restrictive catalyst than the factory unit, retaining emissions control while releasing most of the flow a catless pipe offers.

Full Integrated Heat Shield
Woven stainless heat shielding wrapped over the length of the pipe, reducing radiant heat into the engine bay and protecting the components packaged around it.

Premium T304 Stainless Steel
High-grade, corrosion-resistant material built to withstand the exhaust gas temperatures a tuned four cylinder produces.

Flexible Braided Joint
Absorbs engine movement and driveline flex so the system is not stressed at the turbo flange, a common failure point on rigid aftermarket pipes.

Cleaner Tone Than Catless
The catalyst takes the hard rasp out of the note, which is the difference between a car you still enjoy on a long drive and one you do not.

Direct Bolt-On Fitment
Mounts to the factory turbo flange and mid section using the original mounting points, with no cutting or fabrication required.

Performance Benefits (When Tuned)

• Increases of 20-30 HP and 35-50 Nm of torque

• Faster turbo spool and sharper throttle response

• Deeper exhaust note without the rasp and drone of a catless pipe

• Far less likely to trigger a check engine light than a catless downpipe

Vehicle Fitment

• Mercedes-AMG A45 - W176 (2013-2018)

• Mercedes-AMG CLA45 - C117 (2013-2019)

• 2.0 litre turbocharged four cylinder

Please Note

A high-flow sports catalytic converter is not a factory replacement part. Emissions hardware is regulated and the requirements vary between states, so please check your local regulations before purchasing or installing. An ECU tune is recommended to realise the full benefit of the part, and professional installation is recommended.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles — Volkswagen GTI & R models, Audi S/RS platforms, BMW M cars and Mercedes-AMG. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.