The special-edition Guilia and Stelvio models were first unveiled in Geneva earlier this year.
Under the bonnet is a 2.9-litre V6 twin-turbo petrol engine, tuned to deliver 520 bhp – 10 more than standard – and 443 lb-ft of torque. That gives the Giulia Quadrifoglio a 0-62 time of just 3.9 seconds and a top speed of 191 mph, while the Stelvio SUV does the 0-62 sprint in 3.8 seconds and a top speed of 176 mph.
As well as the engine tweaks, both cars have a Sauber-engineered aero enhancement package, which adds wider side skirts, unique front splitter, a more prominent spoiler, and side winglets on the front wings. Completing the track-inspired exterior is an exposed carbon fibre roof on the Giulia, dark alloy wheels (19-inch on the Giulia and 20-inch on the Stelvio), carbon ceramic brakes with red brake callipers and carbon fibre details on the wing mirrors.
Inside there's even more racing inspiration, with Sparco racing seats with red stitching and carbon shell structure, red seatbelts, a Mopar automatic gear selector with carbon insert, and a leather and Alcantara steering wheel with carbon inserts.
Both 'Alfa Romeo Racing' models are also complete with tinted windows, Adaptive Cruise Control, Harman Kardon premium audio package and the Alfa Connect 3D Nav by Mopar infotainment system with 8.8-inch screen, with DAB radio and Apple CarPlay and Android Auto compatibility.
Only 10 Alfa Romeo Racing edition Giulia Quadrifoglios are coming to the UK, each priced from £89,500; while the equivalent £96,500 Stelvio will be even rarer, with just four coming to the UK.
As well as both Alfa Romeo Racing models being on show on UK shores for the very first time, Alfa Romeo Racing driver Antonio Giovinazzi will be running up the famous Goodwood hillclimb course in an Alfa Romeo-liveried Sauber C32 on Saturday and Sunday.