Mercedes Benz W205/W213/C253, C43/E43/GLC43 Catless Downpipe

The single biggest gain available to an M276. This Catless Downpipe kit removes both factory catalytic converters from the Mercedes-AMG C43, E43 and GLC43, replacing them with smooth mandrel-bent stainless pipes in a mirror-polished finish.

Nothing else in the exhaust costs the V6 as much flow as the standard downpipes. Taking both catalysts out of the equation is the largest single reduction in backpressure available to the engine, and it is where the real gains from a Stage 2 tune come from - on both banks at once.

Manufactured from T304 stainless steel with mandrel bends and precision TIG welding throughout, with the factory sensor bungs retained in their original positions.

Key Features

Full Catalyst Delete, Both Banks

The greatest single restriction in the system removed on each side, for maximum exhaust flow and the largest gain a downpipe can deliver.

Supplied as a Matched Pair

The M276 is a V6 with both turbochargers mounted inside the vee, so it runs two downpipes - one per bank. This kit replaces both. Changing only one leaves half the restriction in place.

T304 Stainless Steel Construction

High-grade, corrosion-resistant material built to withstand the exhaust gas temperatures a tuned M276 produces.

Mirror-Polished Finish

Fully polished inside and out, so the pipes look the part in an engine bay that is easy to see into.

Factory Sensor Bungs Retained

The oxygen sensors plug straight back into their original positions on both pipes.

Smooth Mandrel Bends

Consistent bore through every bend, so the gain is in flow rather than just in volume.

Direct Bolt-On Fitment

Mounts to the factory turbo flanges and mid section using the original mounting points, with no cutting or fabrication.

Performance Benefits

The largest power and torque gain available from a single exhaust part when tuned
Markedly faster spool on both turbochargers
Sharper throttle response
A deeper, harder-edged V6 exhaust note
Maximum reduction in backpressure

Vehicle Fitment

Mercedes-AMG C43 (W205, 2016-2021)
Mercedes-AMG E43 (W213, 2017-2019)
Mercedes-AMG GLC43 (C253 Coupe and X253 SUV, 2016-2022)

3.0L Twin-Turbocharged M276 V6 Engine

Supplied as a matched left and right pair. All three cars share the same M276 engine and downpipe layout, which is why one kit covers the range.

Please Note

Removing a catalytic converter is not legal for road use in Australia. This part is intended for off-road, track and motorsport use only, and it is the owner's responsibility to comply with the regulations in their state.

A catless downpipe will trigger a check engine light without a supporting ECU tune. An ECU tune is required, and professional installation is recommended.

This kit has no heat shielding. If the car is driven on the road regularly, our heat-shielded version is the better choice for the components packed around the pipes.

Why Choose Proven Performance Parts

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