Exhaust› Exhaust Pipes, Systems and Components

Grimmspeed

3" Catted Downpipe Limited

$859.00

SKU: 007098

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 GrimmSpeed 3" Catted Downpipe Limited is a performance exhaust component designed to significantly improve your vehicle's performance potential by replacing restrictive OEM catalytic converters with a single high-flow unit. This downpipe features a high-flow, 300-cell metallic substrate catalytic converter and is proudly made in the USA. It includes GrimmSpeed gaskets and offers provisions for factory O2 sensors and aftermarket wideband AFR sensors.
Show original supplier description
The GrimmSpeed 3" Catted Downpipe Limited is engineered for performance enthusiasts looking to unlock significant power gains by addressing the restrictive nature of OEM catalytic converters. This downpipe replaces the factory units with a single, high-flow 300-cell metallic substrate catalytic converter, drastically improving exhaust flow and performance potential while retaining emissions control. Proudly manufactured in the USA, this downpipe is constructed with innovative 3-D contour flanges and features divorced wastegate routing for optimal flow dynamics. Key features include provisions for both the factory O2 sensor and aftermarket wideband AFR sensors, ensuring compatibility with various tuning setups. The limited edition also includes a black ceramic coating for enhanced durability and aesthetics. Installation instructions are available, and the package comes complete with GrimmSpeed gaskets for a proper seal. This downpipe is specifically designed for a range of Subaru models, including the 2008-2014 WRX, 2008-2021 STI, 2005-2009 Legacy GT (Manual transmission only), and 2009-2013 Forester XT. Fitment confirmation is highly recommended before purchase to avoid potential 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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandGrimmspeed
Part Number007098
CategoryExhaust
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy