• New P5 disc:

    looks a bit like a p4

  • why would one want discs on a bike which in theory never needs to stop?

    TT courses with no braking are mainly a UK thing. Many a grand tour prologue can be won or lost based on time made up in the braking zones.

  • Removing the faff of designing a caliper brake frees up a lot more space for actual aerodynamic engineering, especially on the front end. Modern frame specific calipers on TT bikes were all pretty rubbish, much like the Venge Vias and cables don't like the kinks that can come from completely internal routing.

    Disc rotors are probably a touch 'slower' on paper compared to a hidden caliper but the scope they have for new fork designs (new Shiv, S5D etc) will save a lot more watts in the long run. The new Shiv has fork legs that look over 100mm apart, there's no way you could get a decent caliper rigged up on there. Hydro hoses are loads easier to hide too.

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