Not too long ago, the crazy folks over at ABT Sportsline revealed their take on the Audi RS4 Avant, boosting the sleek wagon’s already impressive peak outputs to an eye-bulging 375 kW and 680 N.m. But that seemingly wasn’t enough for the German tuner…

Now, ABT has revealed its RS4-R, which hikes the 2,9-litre turbocharged V6’s maximum figures to 390 kW and 690 N.m (for the record, that’s 59 kW and 90 N.m more than the standard model). The result is a top speed of 280 km/h and a claimed 0-100 km/h time of just 3,8 seconds, the latter representing an improvement of three-tenths.

ABT Sportsline achieved these figures thanks to the implementation of its in-house-developed ECU, along with the installation of an uprated cooling kit (including a heftier pump) and an ABT exhaust system (with a quartet of 102 mm exits, each trimmed in carbon-fibre).

The body kit that accompanies the power hike includes a new front lip, front flicks, grille frame and rear skirt, all fashioned from carbon-fibre. A set of 21-inch alloys wrapped in 275/25 rubber is also part of the package, along with height-adjustable springs and an anti-roll bar.

Inside, you’ll find ABT branding on the floor mats, door sill, start-stop button and leather seats, along with an ABT gear shift cover. The company says it will build just 50 examples of its RS4-R, with the package priced at €33 100 (that’s a little more than R480 000), including installation.