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Exhaust› Exhaust Pipes, Systems and Components

MAD

S58 Catless Downpipes

Name: S58 Catless Downpipes
Brand: MAD
SKU: MAD-2041

$435.53

SKU: MAD-2041

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The MAD X3M Catless Downpipes are an upgrade for your BMW X3M, engineered to increase power and performance. The catless design removes restrictions for increased power and an aggressive exhaust note. They are a direct bolt-on replacement for factory catalytic converters and work with stock or aftermarket exhaust systems.

Show original supplier description

Upgrade from the stock BMW X3M X4M S58 downpipes to the MAD S58 catless downpipes for maximum airflow, power, and sound. By eliminating the backpressure caused by stock catalytic converters, these downpipes allow your turbos to spool faster and achieve maximum power, while also enhancing the vehicle's exhaust note. Expect an increase of up to 30HP on a tuned BMW S58 with stock turbos, with even greater gains possible on cars equipped with upgraded turbos. The design incorporates a flex pipe section to reduce stress and unwanted vibration, ensuring a more durable installation. Key features include spot-on fitment for the specified models, compatibility with both right-hand drive and left-hand drive vehicles, and a lifetime warranty on defects and fitment. The product also comes with a 90-day return period, and all orders ship within 1-2 business days. Fitment is specifically for 2019+ BMW X3M and X4M models.

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

Brand	MAD
Part Number	MAD-2041
Category	Exhaust

Videos

I Installed Two EASY Mods On My BMW S58 and Made 700 Horsepower!!!

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Returns & Fitment

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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