Fazer 600 has a detuned R6 engine

[stevierst]

I've gone from a string of fazers over the years, to currently owning a t'cat, and there's not a huge ammount of difference. It's basically just a sporty version of a fazer with better suspension, and a peakier power delivery.
I'm pretty certain that there's few components from each engine that are interchangeable (still got my sons fazer in the garage next to the cat.)
The fazers better round town due to the low down torque being slightly higher, and lower gearing. Get a t'cat on the open road, and it's clear to see where the improvements are.

And all you need to do is swap the clip ons over left to right, and it massively improves comfort (trust me, I've done it!). It's an all day proper sports tourer now.