Exhaust› Catalytic Converters

CTS Turbo

High-Flow Cat Downpipe

$459.99

SKU: CTS-EXH-DP-0024-S

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The CTS Turbo High-Flow Cat is a performance downpipe designed for the 2020+ Toyota Supra B58 engine. It is constructed from T304 stainless steel with hand TIG welded and back-purged seams for durability. This high-flow cat downpipe replaces the restrictive factory unit to maximize exhaust flow for increased power gains and an improved exhaust note.
Show original supplier description
The CTS Turbo High-Flow Cat is engineered to significantly enhance exhaust flow for the 2020+ Toyota Supra equipped with the B58 3.0L engine. This performance downpipe replaces the restrictive factory component with a 4.5-inch high-flow 200-cell catalytic converter, designed to maximize power output and deliver a sportier exhaust sound without drone when paired with the factory exhaust. Constructed from premium T304 stainless steel, this downpipe features hand TIG welded and back-purged construction to ensure longevity and reliable performance. It is precisely designed using CAD technology to fit perfectly in place of the factory downpipe, reducing to 3.15 inches (80mm) for seamless integration with factory or aftermarket exhaust systems. Installation requires replacing the downpipe gasket; the factory BMW gasket (18328612538) is recommended and not included. For optimal performance and to prevent a check engine light, Stage 2 software is required. This downpipe is only compatible with vehicles that do not have a GPF/OPF (Gasoline Particulate Filter/Otto Particulate Filter) and is intended for competition use only, not for highway or street vehicles. It is important to note that catalytic converters damaged by "crackle tunes" are not covered under warranty. This product is specifically designed for the B58 engine and fits the 2020+ MK5 A90/A91 Toyota Supra models only.

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

BrandCTS Turbo
Part NumberCTS-EXH-DP-0024-S
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.

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