Nice upgrade guys, especially if you install the 6 pot GSX/R calipers to go with it.

 

Cant see pics where Im at..
What brand? size? and OEM application if there is one?

Thanks

 

Looks like a Nissin, so it's either a 19x18 or a 17.5x18 (not certain about the latter's fulcrum but the piston size is 17.5mm).

Having run a 19x18 for two seasons (mated to 34/32 piston-size Nissin calipers, as on F4i, SP1, 98-99 900RR), I can say this a very worthwhile upgrade.....