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Exhaust› Catalytic Converters

Evolution Racewerks

3-Inch High-Flow Catted Downpipe

$2,495.00 $1,936.12 Save $558.88

SKU: BM-EXH038SCAT

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Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The Evolution Racewerks BM-EXH038SCAT is a high-flow catted downpipe designed for the 2025+ BMW M5 S68 engine. It features a 3-inch mandrel-bent piping and is constructed from 100% stainless steel, TIG welded for quality. This downpipe replaces the primary catalytic converter with a high-flow 200-cell metallic unit, aiming to increase horsepower and torque.
Show original supplier description
The Evolution Racewerks Sports Series High Flow Catted Downpipe (BM-EXH038SCAT) is engineered to enhance performance for the 2025+ BMW M5 equipped with the S68 engine. Manufactured in the USA, this downpipe utilizes a 3-inch mandrel-bent piping constructed from 100% stainless steel and features 100% TIG welded seams for superior quality. This downpipe incorporates a high-flow 200-cell metallic catalytic converter, designed to significantly reduce exhaust flow restrictions compared to the factory ceramic unit. This results in higher maximum horsepower, an improved torque curve with faster spool-up, and enhanced throttle response. The precision CNC machined V-band flange ensures a precise fit to the turbocharger. Installation is designed as a 100% bolt-on process, compatible with both factory and aftermarket exhaust systems, and includes all necessary hardware. Options for finish include brush, polish, or a thermal-coated black finish to help reduce underhood temperatures. **Important Restrictions:** This product is intended for OFF ROAD COMPETITION USE ONLY and is not legal for use on pollution-controlled vehicles on public roads or highways. It is FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. A Vehicle Compliance Waiver must be signed. This item is NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA. It is available for international customers without restriction.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandEvolution Racewerks
Part NumberBM-EXH038SCAT
CategoryExhaust
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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