Akrapovic Kawasaki Ninja ZX-10R 21-25, Ninja ZX-10RR 21-25 Evolution Line Exhaust System (Carbon Fibre) - S-K10E10-RCThis is a complete system constructed from high grade, race proven lightweight titanium alloys. It provides an impressive increase in power across the entire rev range while also improving torque delivery. The weight is decreased by over 6 kg. The system is finished with a hand crafted carbon fibre hexagonal muffler inspired by Jonathan Rea's (Kawasaki Racing Team) World Superbikewinning machine. The power level has been increased with an extra 8. 2