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Active Autowerke Catted Downpipes BMW F87 M2 Competition / F80 M3 / F82 M4

SKU: 11-080A
Price
$2,399.00
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.

Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. All returns are subject to a restocking fee based on item and package condition. Buyer is responsible for paying for return shipping costs. If you need a return label, we will email you a return label and deduct cost from refund. Original shipping costs are not refundable. Special order items are not eligible for return.

Cancellation Policy
In order to cancel your order you must email within 24 hours of placing your order or before your order has shipped, whichever occurs first. Special order items are not eligible for cancelation.

Exchange Policy
We have a 30-day exchange policy, which means you have 30 days after receiving your item to request an exchange. To be eligible for an exchange, your item must be brand new in box. Buyer is responsible for paying all shipping costs to exchange product.

Product Description

The Active Autowerke F8X S55 Downpipes with Active AFlow Catalysts are a high-flow exhaust upgrade engineered for BMW F87 M2 Competition, F80 M3, and F82/F83 M4 models equipped with the S55 twin-turbo engine. These downpipes replace the restrictive factory units with a freer-flowing design that promotes quicker turbo spool, stronger throttle response, and improved horsepower/torque potential without the need for an ECU tune. The included Active AFlow ultra-high-output catalytic converters are EPA-registered and fully OBD2-compliant for most 1996+ vehicles outside California, helping to avoid check-engine lights while increasing flow and performance.

Fitment Notes

  • Designed for BMW F87 M2 Competition (S55) chassis.

  • Fits BMW F80 M3 and F82/F83 M4 models with the S55 3.0 L twin-turbo engine (2015–2020).

  • Direct bolt-on replacement for stock downpipes — uses OEM mounting points and V-band flanges.

  • Includes Active AFlow catalytic converters that are EPA-registered and OBD2 compliant in 49 states (not CARB/California legal).

  • No performance tune required to avoid check-engine lights when installed and functioning as designed.

Included

  • Pair of Active Autowerke downpipes with integrated high-flow Active AFlow catalysts.

  • 304 stainless steel V-band flanges for precise OEM-style fitment.

  • Mounting hardware and gaskets for direct bolt-on installation.

  • Basic installation guidance.

Product Specs

  • Material: TIG-welded 304 stainless steel construction for strength and corrosion resistance.

  • Catalyst Type: Active AFlow ultra-high output 400 CPSI catalytic converters (EPA registered).

  • Fitment: Direct bolt-on downpipe replacement with OEM-matching V-bands and vacuum/O2 sensor ports.

  • Performance Rating: Catalysts rated for engines up to approximately 500 hp while providing high flow and emissions control.

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

  • Warranty: 5-year/50,000-mile warranty on shell/tube ends and 2-year/25,000-mile warranty on catalytic core (terms apply).

Product Features

  • High-flow Active AFlow catalysts promote freer exhaust flow versus OEM pipes while maintaining emissions compliance in most regions.

  • Quicker turbo spool and improved transient response due to reduced backpressure.

  • Durable 304 stainless steel construction with TIG welding for long life under thermal stress.

  • OEM-compatible V-band flanges and sensor ports ensure a precise, leak-free install.

  • No CEL guarantee for catalytic efficiency when functioning as designed (Active AFlow cats), reducing the need for aftermarket tuning.

  • EPA registered and 49-state compliant (excludes California/CARB states).