The braking surface is positioned 5mm below the rims outer diameter and directly in line with the strongest part of the H section. This eliminates the braking and tyre pressures from working against each other. The clincher wheel set has a great rigidity, fantastic aerodynamics and solid braking surface. Tyre pressure rating 125psi. Carbon clincher wheel sets simply do not get any better.X one Hubs, 28/24 aero spokes and ceramic bearings (option) complete the package. Weight: 1450g. Technical Details Rear Rims: 50mm clincher (full carbon) Braking surface: Basalt fiber (volcanic rock) Blocks and pads are included. Hub assembly: (X one) CNC machined 7075 T651 aircraft alloy bar. Spoke count: 28 PSR TB Aero 1422, 270/272 crossed twice. Nipples: Alloy Hex Nulock nut Bearing: 4 fully floating sealed bearings (ceramic bearings option available) Axles: 12mm diameter CNC machined 7075 T651 alloy Cassette body: CNC machined 7075 T651 alloy; Shimano or Campagnola compatible Colour: Carbon Front Rims: 50mm clincher (full carbon) Braking surface: Basalt fiber (volcanic rock) Front hub: CNC machined 7075 T651 alloy (Anodized) Spoke count: 24 PSR TB Aero 1422, 264mm radial. Nipples: Alloy Hex Nulock nut Axle and spacer: CNC machined 7075 T651 alloy Bearing: 2 precision high speed sealed bearing (ceramic bearings option available) Axel size: CNC machined 12mm diameter 7075 T651 alloy Colour: Carbon
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