• Presumably though, they just made the pistons smaller for road use?

    How can they have too much power? It's not like they're going to bend a rotor is it? It's just a question of 'can I apply these enough to slow down rapidly, without immediately exceeding tyre grip?'

  • Should have made it clearer, I was expecting the caliper to be similar sized compared to mtb ones which means larger pads and more bite.

    Otherwise why go 4 pots?

  • You can still get larger pads, just not by way of larger total cylinder area. Two smaller cylinders adjacent can provide pressure across a larger pad as not all parts of the pad need support.

  • Otherwise why go 4 pots?

    I'm sure some guy has explained it twice already

  • That's like asking nodders why they're using a powermeter or why people commuting on carbon rims? I don't know, never having used them, but it's an option that didn't exist previously and might be useful.

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