The German tuners says that acceleration from zero to 60 mph (96km/h) is trimmed from Audi's 4.6-second claim for the stock TT RS to 3.8 seconds on the TT RS "Ur Quattro" while top speed is increased from 174mph (280km/h) to 194mph (312 km/h).
Avus also modified the coupe's suspension with adjustable coil-over shocks (priced at €1,299) that lower the ride height and help the RS handle the corners.
The TT-RS' exterior has been upgraded with a flat-black finish (vinyl wrap) that costs €1,999 and a set of 20-inch Sportec Mono alloy wheels in a glossy black finish shod in 255/30/20 Hankook S1 Evo tires priced at €6,400 but only until December 15, as Avus currently offers a 25 per cent discount on the tire/alloy combos.
Buyers can also opt for a pair of Recaro bucket seats and various accessories for the interior.