Borla 60662 SwitchFire X-Pipe Fits 15-23 MustangExhaust Crossover Pipe SwitchFire X Pipe SwitchFire X Pipe; 2. 5 in. Into 2 in.; Incl. X Pipe Assembly Hardware; Designed To Replace OE Resonator Only; SPECIFICATIONS: WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: This product in the physical form it is sold does not present a hazard. However; operations including; but not limited to welding; brazing; or thermal cutting can expose you to chemicals including Chromium;