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RennTech Stage 2 Turbo Upgrade for the 2018-2021 AMG GT R: stock and RennTech turbochargers side by side

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RennTech upgraded turbocharger next to the stock unit - RennTech Stage 2 Turbo Upgrade for the 2018-2021 AMG GT R

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Pair of turbochargers with stock and upgraded labels - RennTech Stage 2 Turbo Upgrade for the 2018-2021 AMG GT R

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Upgraded turbocharger compressor inlet - RennTech Stage 2 Turbo Upgrade for the 2018-2021 AMG GT R

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RennTech Stage 2 Turbo Upgrade 2018-2021 Mercedes-Benz AMG GT R C190

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Regular price: $16,373.60
Regular price: ~~$16,880.00~~
Sale price: $16,373.60
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Subtotal: $16,373.60

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RennTech Stage 2 Turbo Upgrade 2018-2021 Mercedes-Benz AMG GT R C190

Subtotal: $16,373.60

Not sure it fits? Text us your VINSee all fitment

Vendor: RennTech

SKU: PKG.09.178.2012

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Overview

RennTech's Stage 2 Turbo Upgrade for the 2018-2021 AMG GT R replaces the factory turbochargers with larger, lightweight billet-wheel units and pairs them with a matching RennTech calibration. It is one of the biggest power steps you can make on the 4.0L M178 twin-turbo V8. RennTech rates the AMG GT R at up to 761 hp and 632 lb-ft with this upgrade.

Features

Larger billet compressor wheels
Matched RennTech engine calibration
Built to handle the added boost reliably

What is included

Stage 2 Turbo Upgrade

Specs

Part number	PKG.09.178.2012
Engine	4.0L M178 twin-turbo V8
RennTech rated output	761 hp / 632 lb-ft

Fitment notes

For the AMG GT R (C190), 2018-2021. Please include your VIN with the order so RennTech can confirm the exact application. The full calibration needs 93 octane or better fuel. Check the fitment table before ordering, and contact us if your car differs.

Fitment

Make	Model	Chassis	Year	Engine
Mercedes-Benz	AMG GT R	C190	2018-2021	4.0L M178 twin-turbo V8

Fitment

Year	Make	Model
2018–2021	Mercedes-Benz	AMG GT R

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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