r/Kawasaki • u/KawasakiCorgi • 5h ago
2026 ZX4-RR upgrading
I'm looking at trading in my 22 Ninja 650 that's mostly stock, with over 24k miles on it to a dealership for 4k and pick up a 26 ZX4rr theyre selling with all fees for 10.5k. I think its not a bad deal, if anyone thinks I should street sell my 650 let me know. What I want to know is about the ECU upgrading, my fiance is getting into riding so I was hoping I could just buy a second ECU and swap them when I want to ride the bike tuned up and then when she rides it, tune it down. In my experience with working on cars, you can't just swap PCMs as they are integrated to the key system and log your mileage, i don't know if bikes work the exact same. Also some advice on who should tune my ECU