Strong and light at the same time has outstanding features on wood and cement tracks when speed is key and you have no time to think pista is the tubular to rely on details use track racing size 2834 width 2034 weight 180 gr tpi 300 bead carcass silk bar 8 14 psi 116 203 challenge tubulars hand made all tubular and open tubular produced by challenge are special products machines are not able to produce them and the manual skill required in each step to obtain a good quality standard i