Which non original front brake mastercylinder do you use ?

I am trying to find out which one I could use f,ex, ISR but I need these data for the NSR MC21, or the type of any nonoriginal that is known to work:

Cylinder diameter 17.5 mm

Cylinder diameter 14 mm

Reservoir capacity 50 cm3

Hydraulic thread M10 x 1.25
Weight 0.42 kg
Leverage ratio Adjustable: 5:1 - 3,8:1
Handlebar size 22 mm diameter


http://www.isr-brakes.se/products/mastercylinders/21-006.shtml
_________________
Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom