Gemballa Gemballa was founded in 1981 by Uwe Gemballa at Leonberg and specialised in tuning and aftermarket parts for Porsches. After his death in 2010, the company has continued with cars based mainly on McLarens as well as Porsches. 2006 Gemballa Avalanche GTR 650. Model by Spark 2007 Gemballa Mirage GT. Model by Spark 2008 Gemballa GTR 700 Tornado. Model by Spark 2010 Gemballa Mig U1. Model by Spark