Exhaust› Catalytic Converters

CT

3-Inch High-Flow Downpipe w/ Catalytic Converter

$499.99

SKU: CTS-EXH-DP-0001-CAT

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 CTS Turbo downpipe is a 3-inch high-flow exhaust component with an integrated catalytic converter, constructed from T304 seamless stainless steel. It features CNC machined turbine discharge flanges, mandrel-bent tubing, and T304 stainless steel flanges and O2 bungs. This modular design allows for simple installation of the catalytic converter and smooth transitions for optimal exhaust gas flow.
Show original supplier description
The CTS Turbo 3" High Flow Downpipe is engineered to improve exhaust gas flow, potentially freeing up additional horsepower. Constructed from premium T304 seamless stainless steel tubing and flanges, it boasts 100% TIG welding for durability. The downpipe includes T304 stainless steel O2 bungs and clamps, with a CNC machined turbine discharge flange and mandrel-bent 3" tubing. Installation is made straightforward due to its modular design, which simplifies the integration of the catalytic converter. A note regarding the Check Engine Light (CEL) is essential: proper software tuning is required to prevent or clear the CEL that will occur with this modification. Additionally, this product is not for sale or use in the state of California on any pollution-controlled vehicle, as per the California Air Resources Board regulations.

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

BrandCT
Part NumberCTS-EXH-DP-0001-CAT
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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