We take the brand new Kawasaki ZX-4RR out for an on track first ride review. After trying this bike on the street earlier, we tried it again but this time out at the The Ridge Motorsports park for a trackday test. We also review the ECU reflash from @2wheeldynoworks and slip on exhaust from @GravesMotorsports . How do they change the way this bike performs? Watch and find out!
#kawasaki #zx4rr #trackday
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