2009-2013 Corvette ZR-1

In 2009 Chevrolet released the ZR-1 powered by a supercharged LS9 engine.  Even though the LS9 was the most powerful engine ever developed by GM, we knew there was room for improvement.  Bolting on a set of the Mast LS3 255 Black Label heads to your LS9 will bring it alive.  They give you more room for more boost and more power.