Kia Motors in the United Kingdom turned a Kia Stinger GT S pre production car into this GT420 which is designed purely for track racing. It's a smart idea since it was most likely going to be crushed anyway.
But seeing this only makes me hope that Genesis does something crazy like this with a G70.
The name is a reference to the model’s power, which has been increased from 365 hp (370 PS) in the standard car to 422 hp (428 PS). The peak torque delivered by the 3.3-liter twin-turbo V6 engine has also been raised from 510 Nm (376 lb-ft) to 560 Nm (413 lb-ft).
With support from the Hyundai Motor Europe Technical Centre in Rüsselsheim, Germany, the team got to work on the Stinger420. The list of engine modifications is very long and includes HKS M45il spark plugs for enhanced combustion, a K&N sports air filter, and a lightweight Milltek Sport quad-exit exhaust system with catalysts deleted
The automatic transmission was also upgraded with a six-row cooler in place of a four-row item to prevent overheating on the track. Additionally, the gearbox software was recalibrated to provide quicker shifting characteristic in Sport and Sport+ modes.
To successfully turn the road-going Stinger into a track car, the team also removed all unnecessary weight, including the seats and belts, airbags, sound system, interior trim, and rear window regulators. The engine cover, undercovers, parking sensors, boot and bonnet dampers, and rear bumper beam and foam were also taken out.
Furthermore, the rear windows were glued into place and lightweight door cards were installed. Finally, the sunroof was removed and replaced by a steel panel. In total, engineers were able to cut 150 kg (331 lbs) of weight even after the installation of the roll cage, Sparco race seats, belts, fire extinguisher, and underbody stiffening.
To improve track performance, Kia UK also fitted Eibach Pro lowering springs and anti-roll bars, wider OZ Racing Leggera rims shod with Pirelli Trofeo R tires (235/35/R19 at the front and 265/30/R19 at the rear), and uprated Brembo front brakes, among other upgrades.
Rounding off the changes are some visual tweaks that include a Stillen front splitter and rear diffuser, a rear spoiler by Air Design, and an eye-catching wrap.
Kia UK saved a Stinger GT S pre-production car from the crusher by making it a track special