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Challenge Grifo Seta Ultra S 700c Tubular Cyclocross Tyre

£85.38 RRP £136.00
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In 1990, Max Brauns was driven by a passion for hand-crafted performance tyres and moved to Thailand, where the World's best natural rubber (rather than artificially-produced petroleum-based rubber) could be sourced. In 2000, Challengetech was born.
Challenge Grifo Seta Ultra S 700c Tubular Cyclocross Tyre

The Grifo Seta Ultra S is a handmade tubular tyre from Challenge, sewn around a seamless latex innertube and featuring a silk casing. The natural rubber used to make these tyres offers amazing suppleness which enables greater traction and precise handling. Silk casing gives you the highest ride quality available, and it's threads are so fine that a TPI measurement is not available. Silk is a stronger and more adaptable option than cotton or polyester. An extra layer of uniquely-crafted fabric (PPS) with highly resistant properties sits between the casing and the tire to reduce the risk of punctures.


  • Use: Cross Racing / All round soft pack
  • Size: 700 x 33c
  • Tubular
  • Tyre sewn around latex innertube
  • Internal Rim Width: 15-19 mm
  • Weight: 405g
  • Casing: Silk
  • Flat protection: Puncture Protection Strip (PPS)
  • BAR: 1.6-6
  • PSI: 23-90

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