FOR SALE: 2021 Ford Mustang Shelby GT500KR Coupe

Professionally executed King of the Road conversion

Now offered for sale on Bring a Trailer, this 2021 Ford Mustang Shelby GT500KR  stands out as a highly exclusive example showing just 1,400 miles. After a brief period with its original owner, the car was acquired in 2021 by its current custodian and transformed through Shelby American with the sought-after King of the Road (GT500KR) package.

Finished in Shadow Black and accented by Velocity Blue racing stripes, the exterior makes a bold impression with a full suite of carbon-fiber upgrades. These include a vented hood, front splitter, rear diffuser, rear wing with Gurney flap, rocker extensions, and detailed bumper accents. 

The GT500KR conversion also sharpens the car’s dynamics, incorporating adjustable ride-height springs, upgraded sway bars, caster-camber plates, and a recalibrated MagneRide suspension system. It sits on 20-inch Shelby forged aluminum wheels wrapped in Michelin Pilot Sport 4S tires for exceptional grip and handling.

Inside, the Ebony leather cabin is elevated with custom blue accents and Alcantara-trimmed heated and ventilated seats, each embroidered with GT500KR branding. The Technology Package adds a 12-speaker Bang & Olufsen sound system, navigation, and advanced driver aids including blind-spot monitoring with cross-traffic alert. 

The Alcantara-wrapped steering wheel, highlighted by a gray center stripe, frames a 220-mph speedometer and 8,000-rpm tachometer, along with auxiliary gauges. Additional oil pressure and temperature displays are mounted atop the dashboard, while Shelby American CSM plaques—numbered #21KR0021—appear on both the dash and engine bay, verifying its authenticity.

At its core is a heavily upgraded 5.2-liter Predator V8, fitted with a 3.8-liter Whipple supercharger, revised intake system, and upgraded intercooling components. The result is a formidable 900 horsepower sent to the rear wheels through a seven-speed dual-clutch automatic transmission and limited-slip differential, along with a Shelby-tuned Borla cat-back exhaust system.

Offered on dealer consignment, this GT500KR is accompanied by a Shelby American invoice, digital window sticker, accessories, a clean Carfax report, and a Texas title—representing a rare opportunity to acquire one of the most potent modern Mustangs ever built.

2021 Ford Mustang Shelby GT500KR Coupe For Sale on Bring a Trailer – Image Gallery

Source: Bring a Trailer