CTS TURBO MERCEDES-BENZ AMG W205/M177 C63/63S DOWNPIPES HIGH-FLOW CATS

CTS Turbo is proud to announce the release of our 3" High-Flow for the Mercedes-Benz W205 C63/63S. Performance was our main focus for these downpipes. We have them wrapped in shielded material to help keep the heat in the exhaust for and out of the engine bay. Now you can drive your M177 for longer and harder without the worry of excessive heat.  You'll notice the improved spool and throttle response. Designed using the latest in CAD technology; this part is made to fit perfectly in place of restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back-purged to ensure years of reliable performance. Another benefit is the improved sound, providing a louder and deeper tone, which sounds mean and wonderful at the same time. FEATURES:

• 3" downpipes with 200 cell high-flow catalytic converters
• Bolt-on install, no welding required
• Hand-crafted from 304 Stainless Steel tubing
• OE-style heatshielding to keep the temperatures down
• TIG welded and back-purged
• Improved power
• Beautiful exhaust sound
• Quicker spool and throttle response.
• Reuses OEM mounting points

FITMENT:

• 2015-2021 Mercedes-Benz C63/C63S

Downpipe-specific tuning (stage 2) is required in order to remove the CEL.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 2 applications

C63S

Make	Model	Engine	Years
MERCEDES-BENZ	C63S (W205)		2015–2021

C63

Make	Model	Engine	Years
MERCEDES-BENZ	C63 (W205)		2015–2021

Fitment data last updated: 2026-09-25

✓ Fits 2 vehicle applications Check vehicle fitment before ordering View fitment