Calipers size

[flat]

Let me step back a little. Your problem is that you have too much front brake and not enough rear, right? So you see how increasing the front caliper size will only increase the front bias.

The circuits in a dual master cylinder act in parallel, not series. They are both working together, at the same time. If you have a master cylinder issue, you can try a large master. Something like a 20.6mm.

In general, you want the front to lock up slightly before the rears, it's easier to control a car the understeers versus a tail-happy beast.

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