Corvette Genuine GM Stage 2 Rear Spoiler Upgrade : C7 Z06 July 28, 2018 AdminCorvette Exterior Accessories Product Features C7 Corvette Z06. Genuine GM Stage 2 Rear Spoiler Upgrade This is for a right and left spoiler upgrade. Painted Carbon Flash Easy, do-it-yourself installation. No drilling required Remove Stage 1 and replace with stage 2.