The GTRS4 is a widebody
conversion for the new BMW M4 Coupe and has been revealed at this year's
SEMA in line with Vorsteiner's 10th anniversary.
In addition to widening the rear track by 7 inches and the front by 4 inches, Vorsteiner also offers an engine tune of up to 550 hp for the Bavarian sports car.
To improve road-holding ability, the BMW M4 GTRS4 by Vorsteiner features KW Suspension's sleeve kit allowing for height adjustment as well as keeping the original BMW Dynamic Drive features.