Active Autowerke Catted Downpipes BMW F90 M5 / M8

SKU: 11-063
Price
$2,999.00
Currently Backordered - You can still place your order and we'll ship your order as soon as the product is back in stock!

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Installation Services

Don’t worry about the hassle — let our expert team at Forza Motorworks handle the installation for you. Our professional installation ensures everything fits and operates exactly as intended, giving you clean, factory-quality results, proper wiring or mounting, and avoiding the risks of DIY mistakes. You’ll save time, avoid frustration, and get peace of mind knowing the job is done right the first time. Contact us to learn about our installation services and enjoy a seamless upgrade from day one.

FAQ

Shipping Information
For items that are in stock, purchases made after 9am EST will be usually be shipped out in the next 1-2 business days. Please inquire to confirm lead times if you have specific time constraints. Orders will be sent via signature required at our discretion unless otherwise requested. 

International Shipping
Any and all customs duties, taxes, import fees, and/or tariffs assessed in connection with the purchase shall be the sole responsibility of the customer/end user.

Cancellations / Returns

Original sales receipt or order number must accompany all return requests.

Forza Motor Works accepts returns for exchange, store credit, or refund within fourteen (14) calendar days of the delivery date, subject to the terms and conditions below. After fourteen (14) calendar days, all sales are final unless otherwise approved in writing by Forza Motor Works.

To be eligible for return, products must be in new, unused, unaltered, and resalable condition, including all original packaging, instructions, hardware, documentation, and accessories. Returned items must not show any signs of installation, use, wear, damage, modification, painting, coating, or alteration of any kind.

The following items are non-returnable and non-refundable:

• Special-order products
• Custom-built or made-to-order products
• Products manufactured to customer specifications
• Custom color or finish products
• Manufacturer-direct-shipped products designated as non-returnable
• Products with extended lead times, including but not limited to headers, exhaust systems, wheels, and other special-order performance products
• Any item specifically identified on the product page as non-returnable

Orders for special-order, custom-built, made-to-order, vehicle-specific, or manufacturer-direct-shipped products may not be canceled once the order has been submitted to the manufacturer.

If an item is received damaged during shipping or was shipped incorrectly by Forza Motor Works, Customer Support must be contacted within forty-eight (48) hours of delivery. Claims for shipping damage must include clear photographs of the product, packaging, shipping box, and shipping label at the time of unpacking.

Products determined by Forza Motor Works to have been incorrectly shipped may qualify for replacement, store credit, or refund at our sole discretion. Manufacturer defects are subject to the applicable manufacturer's warranty policies and procedures. Forza Motor Works does not provide any separate product warranty unless expressly stated in writing.

All returns must be authorized prior to shipment and must be assigned a Return Merchandise Authorization (RMA) number. The RMA number must be clearly displayed on the outside of the return package. Returns received without an authorized RMA number may be refused or denied credit.

To obtain a Return Merchandise Authorization (RMA), please contact:

Forza Motor Works
Email: info@forzamotorworks.com

All refunds, exchanges, and store credits are contingent upon inspection and approval of the returned merchandise. Forza Motor Works reserves the right to deny any return that does not comply with this policy.

Approved returns may be subject to a restocking fee of up to twenty five percent (25%) of the purchase price. Original shipping charges are non-refundable. Customer is responsible for all return shipping costs unless the return is the direct result of an error made by Forza Motor Works.

FITMENT, INSTALLATION & PRODUCT USE

Customer is responsible for verifying vehicle compatibility, fitment, and intended use prior to installation. While Forza Motor Works makes reasonable efforts to provide accurate product information and fitment guidance, final responsibility for compatibility rests solely with the customer.

Products that have been installed, test-fitted, modified, painted, coated, damaged, or otherwise used are not eligible for return.

Many aftermarket performance products are intended for off-road, racing, or competition use only and may not be legal for use on public roads in all jurisdictions. Customer is solely responsible for determining compliance with all applicable federal, state, and local laws and regulations.

LIMITATION OF LIABILITY

FORZA MOTOR WORKS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL DAMAGES ARISING FROM THE PURCHASE, INSTALLATION, USE, MISUSE, FAILURE, OR INABILITY TO USE ANY PRODUCT SOLD BY FORZA MOTOR WORKS.

FORZA MOTOR WORKS SHALL NOT BE RESPONSIBLE FOR LOSS OF TIME, LOSS OF REVENUE, LOSS OF PROFITS, LOSS OF VEHICLE USE, TOWING CHARGES, RENTAL VEHICLE COSTS, STORAGE FEES, DIAGNOSTIC FEES, INSTALLATION COSTS, REMOVAL COSTS, ALIGNMENT CHARGES, TUNING FEES, SHIPPING EXPENSES, FINES, PENALTIES, PROPERTY DAMAGE, VEHICLE DAMAGE, OR ANY OTHER INCIDENTAL OR CONSEQUENTIAL LOSS OR EXPENSE.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, FORZA MOTOR WORKS' TOTAL LIABILITY FOR ANY CLAIM ARISING FROM THE PURCHASE OR USE OF A PRODUCT SHALL NOT EXCEED THE AMOUNT PAID FOR THE SPECIFIC PRODUCT GIVING RISE TO THE CLAIM.

By placing an order with Forza Motor Works, the customer acknowledges and agrees to all terms and conditions contained herein, including all return, exchange, warranty, and limitation-of-liability provisions.

Product Description

The Active Autowerke Catted Downpipes for the BMW F90 M5, F9X M8, X5M, and X6M are a high-flow exhaust upgrade engineered to unlock more power and responsiveness from your S63TU twin-turbo engine. These downpipes dramatically reduce the restrictive characteristics of the factory units, promoting quicker turbo spool, improved throttle response, and increased horsepower and torque throughout the RPM range — all while retaining emissions capability and minimizing check-engine-light issues when used with the included high-flow catalysts. Built from premium materials with precision fitment, this upgrade is ideal for enthusiasts who want measurable performance gains and a more engaging driving experience.

Fitment Notes

  • Designed specifically for BMW F90 M5 (2018+) and BMW F9X M8 (2019+).

  • Also fits BMW X5M (F95) and BMW X6M (F96) applications when equipped with the S63TU engine.

  • Direct bolt-on downpipe replacement — no cutting, welding, or fabrication required.

  • Accepts OEM O2 sensor heat shields to retain a stock-like engine bay appearance.

  • Includes high-flow catalytic converters designed to avoid CEL and maintain OBD2 compliance in most regions (excluding California).

  • Not legal in California or other CARB-regulated states due to emissions equipment requirements.

Included

  • Pair of high-flow catted downpipes specifically engineered for S63TU engines.

  • GESI Ultra High Output catalytic converters (4.5″) to maintain emissions functionality and help prevent a check-engine light.

  • OEM-compatible mounting flanges, gaskets, and hardware for a complete install.

  • Installation instructions for straightforward bolt-on fitment.

Product Specs

  • Piping Diameter: 4.50″ high-flow mandrel-bent construction for improved exhaust velocity.

  • Material: TIG-welded 304 stainless steel for corrosion resistance and long-term durability.

  • Catalyst Type: GESI Ultra High Output 400 CPSI catalysts, EPA registered and 49-state compliant.

  • Fitment: Direct bolt-on downpipe replacement with factory-matched 3.5″ V-band connections.

  • Power Handling: Rated for applications up to 500–850 hp, suitable for stock and tuned engines.

  • Temperature Tolerance: Withstands exhaust gas temperatures up to 1500 °F.

  • Compliance: OBD2 compliant for no CEL in most states; not CARB approved in California.

  • Warranty: Typically includes a 5-year/50,000-mile warranty on housing and a 2-year/25,000-mile warranty on catalytic core (varies by retailer).

Product Features

  • High-flow catalytic converters help maintain emissions compliance without triggering a check-engine light in most OBD2 vehicles.

  • Significantly reduced turbo lag and quicker turbo spool thanks to free-flowing downpipe design.

  • Improved horsepower and torque across the powerband by eliminating restrictive stock sections.

  • 304 stainless steel construction with TIG welding ensures durability and resistance to high temperatures.

  • Direct bolt-on fitment with OEM-matched V-bands and heat-shield compatibility for simpler installation and stock aesthetics.

  • EPA registered and OBD2 compliant in 49 states (excludes California) for broad legality outside CARB jurisdictions.