RENNtech 200-Cell Sport Catted Downpipes – AMG GT / GT S / GT C / GT R C190 M178

RENNtech 200-Cell Sport Catted Downpipes – AMG GT / GT S / GT C / GT R C190 M178

Built from high-strength 304 stainless steel with 200-cell sport catalytic converters, these RENNtech downpipes reduce exhaust backpressure, support quicker initial turbo response, and give the exhaust a stronger sound. Designed and manufactured at RENNtech’s headquarters in Stuart, Florida.

Features & Included Components

• Designed to connect to the factory exhaust system.
• Downpipe assembly with 200-cell sport catalysts and required mounting hardware and clamps.
• RENNtech-reported gains: up to 10 HP and 10 lb-ft. Actual results depend on the vehicle and configuration.
• Manufacturer part number: 49.178.0374.

RENNtech’s photos show the downpipes before ceramic coating to display their fabrication and welds.

Vehicle Fitment

• AMG GT: MY2016–2017 pre-facelift; MY2018+ facelift
• AMG GT S: MY2015–2017 pre-facelift; MY2018+ facelift
• AMG GT C and GT R: MY2018+

For the original 190-series M178 AMG GT family. Black Series uses a separate listing; this is not a C192 or X290 application.

Please provide your VIN, model year, engine, and body style to confirm compatibility before fulfillment.

Shipping & Availability

• U.S. shipping included: The displayed price includes $60 for shipping within the United States.
• International orders: Shipping costs vary by destination. We will email you with the final shipping adjustment before your order is fulfilled. The $60 already included will be credited toward that shipping total; any additional balance must be approved and paid before shipment.
• If confirmed in stock: Please allow approximately 2–3 business days for packing and dispatch by RENNtech. This is processing time, not delivery time.
• Lead times: If a production or supplier lead time applies, we will notify you before moving forward. Zefer Performance always works to get your products to you as quickly as possible.

Availability must be confirmed with RENNtech. These products are listed by the manufacturer for custom order. Dispatch and delivery estimates may change; weekends and holidays are excluded from business-day estimates.

Installation & Terms

Professional installation required. Installation and ECU software are not included. Do not assume a check-engine-light-free result or emissions inspection approval.

Review RENNtech’s manufacturer terms for warranty, special-order deposits, returns, and cancellations. Contact Zefer Performance before arranging a return or warranty claim.

Motorsport Use

For closed-course motorsport or export. Not intended for vehicles driven on public roads in the United States. Catalytic converters do not establish road-use approval. Confirm the intended use and destination requirements before purchase.