Joined: Apr 2010
From: Aromas, CA
I Ride: 2014 Ninja 1000, lots of ZX7s and Z1000s
What year is your 12? The biggest issues with these are clutch baskets on 2000-2003. All the baskets suck, but the early ones really tend to break. If you can find a Muzzy basket you are way ahead.
Another known issue is a leaky valve cover. There are a couple fixes for this. Machine the cover back flat and run washers under the bolts. Do not over torque is the biggest thing.
All of them have a flat spot around 4000 RPM. A couple tuners have improved this, but something you just have to live with.
Congrats. One of my favorite bikes. I miss my 04.
Builds in Progress
K ZX7R Superbike-ish
M ZX7R Crevier Superbike - Complete
M ZX7R Russell Superbike
N ZX7RR Yanagawa-ish Superbike
Z750S Frankenstein-ish bike