2025 Kawasaki Ninja Zx-4rr Top Speed. Compression ratio is 12.3:1 which gives a claimed power figure of 57kw (76.4hp), rising to 59kw (79.1hp) when ram air effect is added at speed. Without getting anywhere near top speed, the reduced power output stood out versus the honda, too.

The rr edition will price. Bell race star flex dlx: