Exhaust› Exhaust Pipes, Systems and Components

IE Engineering

3" Cat-Back Exhaust System with 4" Quad Tips

$1,399.99

SKU: IEEXDB4

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The IE Engineering IEEXDB4 is a catback exhaust system designed for the Audi 8Y S3 2022-2025. It features a high-flow design with 3-inch piping that reduces to 2.5-inch tailpipes. The system is constructed from T304L stainless steel and is TIG-welded for durability. It includes 4-inch slash-cut quad exhaust tips for a motorsport look.
Show original supplier description
The IE Engineering IEEXDB4 catback exhaust system offers an aggressive yet refined exhaust note for your 2022-2025 Audi 8Y S3. The system features large 3-inch primary piping that transitions to 2.5-inch tailpipes, designed to maximize exhaust flow. Constructed from corrosion-resistant T304L stainless steel with mandrel-bent tubing and TIG-welded joints, this exhaust is built to endure. The system is visually complemented by four adjustable depth, 4-inch slash-cut quad exhaust tips with a motorsport-inspired brushed finish. Installation is designed to be DIY-friendly, with an average time of 1-2 hours using basic tools. Advanced R&D, including 3D scanning of the Audi 8Y S3 chassis, ensures an optimized fit with no rattles or rubbing. Note that this exhaust system is not currently legal for road use in California due to emissions compliance and may also carry a California Prop 65 warning.

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

BrandIE Engineering
Part NumberIEEXDB4
CategoryExhaust

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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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