Exhaust› Exhaust Pipes, Systems and Components

COBB

3-Inch Cat-Back Exhaust

$50.00

SKU: COBB516100

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The COBB SS 3" Cat-Back Exhaust is a direct bolt-on system for the VB Subaru WRX. Constructed from 304 stainless steel and TIG welded, it offers durability and a refined appearance. It incorporates two bespoke COBB-designed mufflers and adjustable slip-fit tips.

It is not an emissions-related part, making it suitable for emission-controlled vehicles.
Show original supplier description
The Cobb Stainless Steel 3-Inch Cat-Back Exhaust is a performance upgrade for the 2022-2026 Subaru WRX equipped with the FA24WGT engine, available for both manual and CVT transmissions. This system is crafted from mandrel-bent 304 stainless steel tubing, maintaining a consistent 3-inch diameter from the catalytic converter outlet to the rear. The larger 3-inch diameter offers significantly improved exhaust flow capacity compared to the factory system, leading to reduced backpressure. This reduction in backpressure directly benefits the turbocharger, allowing it to spool more freely and reach boost targets faster. Cobb has meticulously engineered this cat-back system as a matched assembly, specifying the mid-pipe diameter, resonator volume, muffler packing, and tip size to achieve a specific sound character. The result is an exhaust note that is intentionally louder and more purposeful than stock, with a tuning focus on minimizing highway cruise drone. This system is designed to complement Accessport calibrations at Stage 2 and above, completing the full-system flow improvement required for higher boost targets. All necessary installation hardware, including hangers, gaskets, and clamps, is included in the box for a complete installation. Cobb Tuning, with its extensive experience in performance software and hardware since 1999, ensures this exhaust system is validated as part of a complete performance package, delivering consistent and reliable results.

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

BrandCOBB
Part NumberCOBB516100
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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