Exhaust› Catalytic Converters

HJS

Performance Catalytic Converter for Porsche 992 GT3 / GT3 RS

$5,496.95

SKU: FS.POR.992GT3.MH.SC

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 HJS catalytic converter is a direct-fit performance upgrade for Porsche 992 GT3 and GT3 RS models from 2022-2025 worldwide. It features a modular design with quick-release V-band connectors, allowing for easy switching between the catalytic converters and optional link pipes. This system is constructed from T304L stainless steel with precision investment cast inlet flanges.
Show original supplier description
The HJS FS.POR.992GT3.MH.SC is a performance catalytic converter system designed for all worldwide Porsche 992 GT3 and GT3 RS models (2022-2025). This U.S. Patented RENNKRAFT modular system features a quick-release V-band connector, enabling owners to swap between the EMITEC HJS 200-cell Euro 6 homologated catalytic converters and optional QUICKTRACK link pipes for dedicated track use. Constructed from CNC mandrel-bent T304L stainless steel, the system includes lost wax precision investment cast inlet flanges and CAD-designed CNC flanges. Extensive dyno development has confirmed significant power gains, with the Sport Cats yielding +19 HP / +20 lb-ft of torque at the crank (16 whp / 20 lb-ft whp). The system also saves 6 lbs compared to the factory headers. It is important to note that this system deletes the GPF on EU cars and may cause a check engine light unless a simulator or tune is used. The optional cat bypass pipes are strictly for off-road track use only and are not intended for street usage, as they bypass emissions controls. Switching to cat-bypass for track events helps prevent catalytic converter degradation during competition.

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

BrandHJS
Part NumberFS.POR.992GT3.MH.SC
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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