Mercedes-AMG GT63 S E Performance X290 Downpipes

Zefer Performance Downpipes for Mercedes-AMG GT63 S E Performance X290

Built to order for the GT63 S E Performance four-door hybrid, these downpipes offer a choice of catless construction or 200-cell sport catalytic converters. The design focuses on improved exhaust flow, a more pronounced V8 exhaust note and bolt-on fitment for the correct vehicle configuration.

Performance & Quality

• Application-specific bolt-on fitment for the X290 GT63 S E Performance.
• Flow-focused pipe routing to support a properly calibrated performance setup.
• Careful attention to fabrication, alignment and surface finish.
• Choice of catless or 200-cell sport-catalyst configuration.
• Optional performance heat shielding to help manage radiant exhaust heat around the downpipes.
• Finished-product photos emailed before your order leaves our warehouse.

Choose Your Configuration

• Catless — $1,500: A catalyst-free configuration for competition applications.
• 200-Cell Sport Cats — $2,200: A sport-catalyst configuration using 200-cell converters.

Finish & Heat-Shield Options

• Standard Finish — included: Standard unshielded finish.
• Sandblast Finish — free: A satin, matte metallic appearance at no additional charge.
• Performance Heat Shield — add $400: Available with either catless or 200-cell sport cats.

Sandblast finish and performance heat shielding cannot be combined. Choose one finish option when ordering. Heat-shielded pricing is $1,900 for catless or $2,600 for 200-cell sport cats.

What's Included

A downpipe set in your selected catalyst configuration and finish. Performance heat shielding is included when that option is selected.

Fitment & Professional Installation

For the Mercedes-AMG GT63 S E Performance X290 four-door hybrid with the M177 4.0L twin-turbo V8. Please provide your model year and VIN in the order notes so we can confirm the correct application before production.

Professional installation is strongly recommended. Bolt-on fitment describes the connection and mounting design; installation still requires proper access, alignment and clearance checks by an experienced shop.

200-cell sport-cat installation: The larger catalyst housings may require the engine to be lowered slightly to provide clearance and position the downpipes correctly. Have your installer plan for this before scheduling the work.

Catless installation: The catless configuration does not have the same clearance issue associated with the larger 200-cell catalyst housings.

Tuning & Calibration

Professional tuning is recommended to calibrate the vehicle for its selected downpipes and supporting modifications. Have a qualified tuner review the setup and verify operation after installation.

Made-to-Order Production & Shipping

Estimated production time is approximately 2–3 weeks, plus shipping time. Each set is made to order. We will email photos of your finished downpipes before they leave our warehouse. Please use a valid email address at checkout.

Product Images

The sandblast image is an illustrative finish preview of the catless configuration. Your selected configuration may differ in appearance. Photos of your completed order will be provided before dispatch.

Terms & Conditions

Please read Zefer Performance's Terms of Service and Return, Refund & Cancellation Policy before placing your order. Made-to-order cancellation restrictions, return eligibility and applicable restocking fees are governed by those policies.

Intended for competition applications. Confirm permitted use in your location before ordering; no road-use emissions certification is claimed for either configuration.