NOW WITH INCLUDED CARBON TIP COVER… The EVOlution GT, for the Z06 Chevrolet Corvette, combines the best of GReddy’s 40 years of exhaust design expertise, in one unique system. Increased performance, refine exhaust note, and a substantial weight savings come through a creative layout with our distinctive dual EVO mufflers. Large 76mm (3”) mandrel-bent piping is configured with a superior “X-pipe." It is then linked to a set of our compact, but highly-efficient, straight-through, mufflers and twin center-exit, 115mm (4.5”) GReddy slash cut tips. To complete the look, a GReddy Carbonfiber Tip Finshier is included to accent the EVO GT exhaust. In dyno tests, the system gains the Z06, 27.2whp / 34.7ft-lb of performance, while producing just an 8-10 decibel increase in sound, (at idle and our test RPM = ¾ redline, 5250). By eliminating the heavy OEM valve system and unnecessary tips, weight is reduced by 34% (-24.2lbs.) Fitment and installation is top notch and straight forward, with better-then OEM investment cast stainless-steel GReddy flanges. (There is no cutting or sloppy slip-on joints to figure out.) Like all GReddy EVOlution GT systems, they are all made from fully hand-welded, 304 stainless-steel and each exhaust carries a GReddy Limited Lifetime warranty.