Hello!
I have had my share of shitty rear brakes over the years. This time I will make it right. I have a rear 2 piston caliper, which is descibed like this: "1.25 inch piston on brake caliper- 2 1/4 inch wide brake pad better contact area"

Can anyone tell me what bore my master cylinder should have? I want some Excel forward controls. They come in 3/4" and 5/8"

Can anyone help me?

Thanks
Rune