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AMS stainless race downpipe for the Toyota GR Supra 3.0 B58

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AMS stainless race downpipe for the Toyota GR Supra 3.0 B58, front view

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AMS stainless race downpipe for the Toyota GR Supra 3.0 B58, top view

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AMS stainless race downpipe for the Toyota GR Supra 3.0 B58, side view

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AMS stainless race downpipe for the Toyota GR Supra 3.0 B58, detail view

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AMS stainless race downpipe for the Toyota GR Supra 3.0 B58, installed view

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AMS Stainless Race Downpipe | 2020-2026 Toyota GR Supra 3.0 B58

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Brand: AMS PerformanceSKU / Part #: AMS.38.05.0001-1

Regular price: $649.95
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AMS Stainless Race Downpipe | 2020-2026 Toyota GR Supra 3.0 B58

Subtotal: $649.95

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Overview

The AMS Performance Toyota GR Supra Stainless Steel Race Downpipe (part number AMS.38.05.0001-1) replaces the restrictive factory downpipe on the A90 Supra with the 3.0L B58. Its 4.5" mandrel-bent 304 stainless design steps down to a 3.5" flex section, which maximizes volume and flow and sharply cuts back pressure.

With less back pressure, exhaust gas flows more freely across the turbine wheel, so power arrives earlier and the turbo spools noticeably faster. The turbine flange gives a smooth transition from the turbo outlet, and long gradual bends keep exhaust velocity high. AMS designed it in SolidWorks and 3D printed it to confirm OEM-level fit.

It bolts to the factory location with no cutting, the threaded O2 sensor bungs sit in the OEM locations so no extensions are needed, and the 3.15" (80mm) outlet works with the stock or an aftermarket cat-back. Heavy-gauge stainless keeps heat in the pipe and resists cracking.

Features

4.5" design stepping to a 3.5" flex section
304 stainless, mandrel bent
Faster spool and earlier power
O2 sensors in the OEM locations
3.15" (80mm) outlet for stock or aftermarket cat-back
Bolt-on, no cutting

What Is Included

Stainless steel race downpipe
Adjustable mounting bracket
Installation instructions

Specs

Specification	Detail
Part number	AMS.38.05.0001-1
Brand	AMS Performance
Product	Toyota GR Supra Stainless Steel Race Downpipe
Material	304 stainless steel
Main diameter	4.5", reducing to 3.5" flex section
Outlet	3.15" (80mm)
Catalytic converter	None (race use)
Shipping weight	10 lb
Shipping box	28 x 10 x 10 in

FAQ

Is this street legal?
No. It is a race downpipe without a catalytic converter, intended for off-road and competition use.

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

Do I need a tune?
Yes. A tune is required for a catless downpipe.

Fitment Notes

Fits 2020-2026 Toyota GR Supra 3.0 with the B58 sold in the US. Not for the 2.0L Supra. For off-road and competition use only. 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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