Mercedes-Benz CLS550 M278 Catless Race Downpipes

For your Mercedes-Benz CLS550 (2012-2018) equipped with the 4.7L Twin-Turbo M278 V8 engine.

Our meticulously crafted Gapped Industries CLS550 M278 catless race downpipes deliver substantial performance gains while unlocking the full sound and potential of the twin-turbo M278 engine. By eliminating the restrictive factory catalytic converters, our race-engineered downpipes significantly reduce exhaust back pressure, allowing the turbochargers to spool more efficiently while increasing horsepower, throttle response, and exhaust volume.

Our race downpipes maintain a full 3" diameter throughout nearly the entire pipe to maximize exhaust flow and minimize restriction. Manufactured from premium 1.5mm wall TIG-welded 304 stainless steel, they are built to withstand extreme exhaust temperatures while providing a deeper, more aggressive exhaust note under acceleration.

Features

• Adds up to approximately 90-120 crank horsepower and 120-160 lb-ft of torque when paired with a Stage 2 ECU & TCU tune from our select tuning partners.
• Hand-built from premium TIG-welded 304-grade stainless steel.
• Smooth mandrel bends designed to maximize exhaust flow and turbocharger efficiency.
• Direct bolt-on installation with no cutting or welding required.
• All required hardware included for installation.
• 60-day return policy against fitment and manufacturing defects.
• Compatible with both left-hand drive (LHD) and right-hand drive (RHD) vehicles.

Vehicle Fitment

Mercedes-Benz CLS550 (C218/X218), 2012-2018, 4.7L Twin-Turbo M278 V8

Performance Benefits

Installing catless downpipes is one of the highest-value performance upgrades available for the M278 platform. When combined with a quality ECU calibration, owners can expect:

• Faster turbo spool
• Increased horsepower and torque
• Improved throttle response
• Lower exhaust back pressure
• More aggressive exhaust sound
• Greater tuning potential for future modifications

Returns & Support

Our commitment to customer satisfaction compels us to provide a 60-day return period from the initial purchase date for products returned in accordance with our defect and fitment policy.

For product questions or installation assistance, contact us at contact@gappedindustries.com or send us a direct message on Instagram @GappedIndustries for the fastest response.

NOTE: NOT INTENDED FOR ROAD USE OR USE ON POLLUTION-CONTROLLED MOTOR VEHICLES IN COMPLIANCE WITH STATE/FEDERAL EMISSIONS LAWS.

DISCLAIMER & RELEASE OF LIABILITY

GAPPED INDUSTRIES – CLS550 M278 Catless Race Downpipes

By purchasing this product, the buyer acknowledges and agrees to the following:

FOR OFF-ROAD OR RACING USE ONLY: These catless downpipes are not designed for street use and may violate emissions regulations in certain states or countries. It is the buyer's responsibility to verify all applicable local, state, and federal laws before purchase, installation, or use.

NO LIABILITY: Gapped Industries and its affiliates assume no responsibility for any legal consequences, fines, damages, vehicle malfunctions, or personal injuries resulting from the installation or use of this product.

VEHICLE WARRANTY & COMPLIANCE: Installation of this product may void manufacturer warranties and may cause the vehicle to fail emissions testing. The buyer assumes all responsibility for vehicle modifications and compliance with applicable laws.

NO WARRANTIES BEYOND STATED POLICY: This product is sold as-is, without any express or implied warranties beyond those outlined in our return policy. Gapped Industries shall not be liable for any direct, indirect, incidental, or consequential damages arising from the use of this product.

By purchasing this product, the buyer accepts full responsibility for its installation, use, and any consequences that may arise. If you do not agree with these terms, do not purchase or install this product.

NOTE: This product is not currently in full production. Shipping times may vary from our standard policy. Estimated shipping time is 10-14 business days.