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ARM Motorsports

B9 3.0T Downpipe

$547.00 $497.00 Save $50.00

SKU: B930TDP

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The ARM Motorsports B9 Downpipe is an exhaust component designed to improve performance and sound for Audi 3.0T engines. It replaces restrictive sections of the stock exhaust system, allowing the turbo to spool faster and exhaust to flow more freely. The downpipe features a precision CNC machined turbo flange and a large 6.5-inch section for maximized exhaust flow. It includes midpipe gaskets and hardware for installation.
Show original supplier description
The ARM B9 3.0T Downpipe is engineered to enhance the exhaust flow and performance of your Audi B9 S4/S5. This upgrade replaces the most restrictive parts of the stock exhaust system, allowing your turbo to spool faster, your exhaust to flow more freely, and resulting in a more aggressive vehicle sound. While not requiring a tune to function, pairing it with a tune will significantly amplify power gains. Constructed from durable 304SS, this downpipe features a precision CNC machined turbo flange designed to mate seamlessly with OEM turbos or any turbo upgrade compatible with the OEM downpipe. It incorporates a substantial 6.5" exhaust section immediately after the turbo to maximize flow, which then transitions into a 3.5" Y-section. This Y-section gradually steps down to precisely match the OEM midpipe flanges, ensuring compatibility with both the stock B9 midpipes and ARM's own B9 Midpipes. The downpipe includes necessary midpipe gaskets and hardware for installation. This downpipe is compatible with the Audi B9 and B9.5 S4, and B9 and B9.5 S5 Coupe and Sportback models equipped with the 3.0T engine. ARM Motorsports backs this product with a lifetime warranty covering defects in craftsmanship and fitment, offering a replacement unit for covered issues.

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

BrandARM Motorsports
Part NumberB930TDP
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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