calipers are now Brembo M50 Monoblock and the master cylinder is a radial Brembo. The brake lines are now braided stainless-steel. A first for production sport bikes a 43 mm Showa Balance Free Fork derived from WSBK. Kawasaki also offers Race Kit parts for chassis and engine. 2017 Kawasaki released a homologation special, the ZX-10RR with the modified cylinder head. Race-kit parts can be ordered such as high lift cams, DLC coated valve train, a beefed-up crankcase, Marchesini seven-spoke forged aluminum rims, a bi-directional quickshifter, and a single seat. The model was a limited-run of 500 units. 2018–2019 For the 2018 race season, Kawasaki adopted the motto "Ninja Spirit" due to race organisers imposing technical penalties based on Kawasaki's analysed prior successes, resulting in limitations to the maximum revs their engine could achieve in race operation. Kawasaki asserted the new rules would affect their machines more than the other manufacturers, resulting in their reaction: "The spirit of accepting a challenge of striving for on-track excellence, and never giving up.". In late 2018 Kawasaki released a homologation special run of 500 ZX-10RR machines having a redesigned engine with modifications including finger cam followers that allowed for higher revs and greater power output. This was used by World Superbike riders Jonathan Rea and Leon Haslam during 2019. 2020 Production of the 2020 model year ZX-10R benefited from racing experience, having piston and cylinder head components previously available only on the ZX-10RR. Specifications Notes References Kawasaki ZX-10R Road tests of all Kawasaki ZX-10R models Motorcycle USA 2011 Kawasaki Ninja ZX-10R First Ride External links (United States) Ninja ZX-10R Sport bikes Motorcycles introduced in 2004