ForceGT.com Car News, Car Reviews, Video Reviews, Tuning and much more. Vorsteiner is celebrating its 10 year anniversary with special limited edition model, code named GTRS4, debuting at the upcoming 2014 SEMA Show. The GTRS4 is a full lightweight carbon composite wide body conversion for the 2014 BMW M4 coupe. The idea was first conceived on a blank sheet of paper …
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