Spark Exhaust Kawasaki Ninja ZX-10R "Grid-O" Semi-Full Exhaust System (2021+). Constructed with catalyst eliminating titanium link pipe 60mm. Handcrafted in Italy, Approximately 4 lbs, Dyno Tested for maximum horsepower increase over stock, 113 db. Non-Homologated Racing Version for Maximum Performance. *Mounts to Passenger Footpeg (Race Hangar sold separately). *Includes removable DB Killer.