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So, a little research turns up that the CBR600F2 rotors I'm currently using are 276mm and the SP1 rotors on the way are 320mm.
I also have a complete SP2 master cyl on the way (right down to the lever).
Why?
More progressive brakes.
A little googling reveals the SP2 MC piston is 17mm instead of the SP1 19 mm piston.
All reports on the SP1 vs SP2 brakes is the lever pull is much more progressive with better feedback as a result of the diameter change.
Before anyone asks, I have a set of SP2 calipers from the same year as the master cyl (2003) sitting on the shelf in the garage........;-)
Should be a nice upgrade if I can build the carriers to work properly.
My initial thought is to turn down a set of VF rotors to just the carrier, chuck the SP rotors up in the lathe a turn the center of the carriers out, then off to the TIG machine at work to mate the two.
I need to get all the stuff here first though, it may not work at all....
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