Riders driven to win are relentless in their pursuit of even the slightest weight reduction—shaving off just a few grams.

The R-model is the ultimate racing tire, uncompromising in its pursuit of the lightness needed to win.

product number     size         　ETRTO       weight（g）  Recommended Pressure（kPa）

F740-GKZX-R-SX2     700×40C 　40-622        460             MAX 400

F745-GKZX-R-SX2     700×45C 　45-622 　　510             MAX 400

F740-GKZX-R-SX2     700×50C 　50-622 　　600             MAX 400