CTS Turbo Mercedes-Benz M177/W213 E63S High-Flow CATS

CTS Turbo's high-flow catted downpipes for the Mercedes-Benz M177/W213 E63S are built to maximize exhaust flow and unlock the most power from your 4.0 twin-turbo V8.

Built to last, built to fit

CAD-designed to drop perfectly into the restrictive factory catalytic-converter location and manufactured from cast T304 stainless steel, then hand TIG-welded and back-purged for years of reliable service. They sit within the OEM heat shields.

Sound and performance

Beyond the power, expect a louder, deeper growl with a pronounced exhaust crackle on downshift and a confident punch through the gears on up-shift — even more aggressive paired with an aftermarket exhaust, yet subtle when cruising with no drone on the factory system.

Product details

• Cast T304 stainless steel, TIG-welded and back-purged construction
• Replaces the restrictive factory catalytic converter
• Fits within OEM heat shields
• Strong power upgrade with uncompromising performance
• Sporty exhaust sound, subtle when cruising
• No drone with factory exhaust

Fitment

• 2019-2020 Mercedes-Benz E63S AMG (W213)
• 2019-2020 Mercedes-Benz AMG GT 63/63S (X290)

Proper Stage 2 tuning software must be used to clear the CEL that will otherwise occur.

Emissions disclaimer: This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.