Specialized Fast Trak Grid 2Br Black 29X2.3

.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}We took the tread design of the Fast Trak GRID 2Bliss Ready tire a step further by manipulating each knob with Finite Element Analysis. We improved an already proven tread design by having more consistent shoulder blocks for better cornering traction, as well as having the block spacing being configured for better self-cleaning. And now, it also features our own GRIPTON(R) compound that maximizes mechanical grip, damps vibration, and offers unparalleled traction in either wet or dry conditions. 29 x 2.1", psi 25-50, approximate weight 670g29 x 2.3", psi 25-50, approximate weight 720g29x2.6, psi 20-40, approximate weight 845gBead: FoldableButyl wrapped bead = 2Bliss ReadyCasing: Additional sidewall protection for exceptional durability, plus added sidewall stiffness for enhanced stability.Compound: GRIPTON(R)