Cadillac CT6 3.0T 2016-2020 Stainless Steel Downpipe

$827.00 USD

Shipping calculated at checkout.

Unblock Your Horsepower — HMD Performance Downpipe for Cadillac CT6 2016-2020

Cadillac CT6 (3.0T V6 Twin-Turbo, 2016-2020) — the factory downpipe is the single most restrictive part of your exhaust system. HMD's direct bolt-on performance downpipe replaces it with a smooth-flowing SUS304 stainless steel unit that cuts backpressure, drops exhaust gas temperature and wakes up turbo response.

Why Upgrade Your Downpipe?

Free Heat Shield Upgrade — effectively reduces under-hood and downpipe surface temperatures, at no extra cost.
SUS304 Stainless Steel, 1.5mm Wall — wear and corrosion resistant for a long service life
Premium Metallic Sport Catalyst Core — palladium & rhodium precious-metal loading delivers excellent heat resistance: more exhaust flow AND efficient emissions cleaning to help meet tailpipe standards.
Restore Lost Power — replaces the restricted factory unit to unblock airflow, sharpen throttle response and unlock performance.
100% Bolt-On, No Cutting or Welding — direct OEM replacement, precision TIG hand-welded inside and out for crack-proof durability.
Free Laser Logo Engraving — personalize your downpipe at no charge.

Product Overview

Brand	HMD Performance Exhaust
Fitment	Cadillac CT6 (2016-2020)
Product Type	Performance Downpipe
Material	Premium SUS304 Stainless Steel, 1.5mm wall thickness (lightweight options available on request)
Welding Process	High-temperature TIG tension welding, internal and external double-layer full weld — crack-proof and ultra-durable
Installation	Direct OEM plug-and-play replacement, no cutting or welding required
Performance Gain	Reduced exhaust backpressure, improved exhaust flow, faster turbo response, higher engine efficiency, deeper and more penetrating exhaust sound
Installation Recommendation	Professional installation highly suggested
Custom Service	Free laser logo engraving
Lifespan & Warranty	2-year official warranty, over 10-year service life
Origin	Made in China
Contact	+86 18924479531 (WeChat / WhatsApp / Kakao Talk)

Variants — Choose Your Configuration

No cats — race-spec uncatalyzed pipe, strictly intended for closed track events and off-road use only where permitted by local regulations; may trigger a check engine light, ECU tune recommended.
100 Cell / 200 Cell / 300 Cell — high-flow metallic sport catalytic converters for off-road, track and motorsport use where local regulations permit; please check your local laws regarding emissions equipment before ordering.

Vehicle Fitment

Send your vehicle details (model year, VIN if available) to customer service after order placement — we confirm exact fitment before shipping. Please confirm the exact vehicle year before purchase.

HMD Performance Downpipe — The Ultimate Choice for Flow, Durability & Responsive Power.