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AMS street downpipe with GESI cat for the Toyota GR Supra 3.0

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AMS street downpipe with GESI cat for the Toyota GR Supra 3.0, front view

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AMS Street Downpipe with GESI Cat | 2020-2026 Toyota GR Supra 3.0

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Regular price: $1,649.95
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AMS Street Downpipe with GESI Cat | 2020-2026 Toyota GR Supra 3.0

Subtotal: $1,649.95

Not sure it fits? Text us your VINSee all fitment

Vendor: AMS Performance

SKU: AMS.38.05.0001-2

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Overview

The AMS Performance Toyota GR Supra Street Downpipe (part number AMS.38.05.0001-2) pairs the AMS 4.5" mandrel-bent stainless downpipe with a high-flow GESI catalytic converter. Power comes in earlier and turbo spool improves noticeably, while the cat keeps emissions in check.

The GESI converter uses a newly formulated substrate and wash made for current vehicle emissions requirements; it is not an off-the-shelf cat. AMS describes it as 49-state legal. Long gradual bends keep exhaust velocity up without building back pressure, so gas flows more freely across the turbine wheel.

AMS designed and 3D printed the pipe for OEM-level fit. It bolts in with no cutting, the O2 sensors stay in the OEM locations, and it works with the stock or an aftermarket cat-back. An adjustable mounting bracket and detailed instructions are included.

Features

4.5" mandrel-bent stainless
High-flow GESI catalytic converter
Described by AMS as 49-state legal
Faster spool and earlier power
O2 sensors in OEM locations
Bolt-on, no cutting

What Is Included

Stainless Supra street downpipe with EPA compliant GESI catalytic converter
Adjustable mounting bracket
Installation instructions

Specs

Specification	Detail
Part number	AMS.38.05.0001-2
Brand	AMS Performance
Product	Toyota GR Supra Street Downpipe with GESI Catalytic Converter
Material	Stainless steel
Diameter	4.5" mandrel bent
Catalytic converter	GESI, EPA compliant
Market	US-market cars only
Shipping weight	14 lb
Shipping box	30 x 10 x 10 in

FAQ

Is it legal in California?
AMS describes it as 49-state legal. Check California rules before installing.

Will it fit a non-US car?
No. AMS says it does not fit world-market cars.

Do I need a tune?
A tune is recommended with any downpipe change.

Fitment Notes

Fits 2020-2026 Toyota GR Supra 3.0 with the B58 sold in the US. Not for the 2.0L Supra. Browse all AMS Performance parts.

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.

Year	Make	Model	Chassis	Engine
2020-2026	Toyota	GR Supra 3.0	A90	3.0L B58 turbo I6

Fitment

Year	Make	Model

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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