Ridley ASTR Rival XPLR AXS Black BronzeThe ASTR brings all the features of the ASTR RS to an affordable price point: from aerodynamic improvements to modern gravel geometry. The ASTR is ready for every fast ride or gravel race on every type of terrain. Just like the ASTR RS, the ASTR has a tire clearance of 47 52 mm (52 millimeters with a 1x setup and 47 millimeters with a 2x setup) for increased grip and comfort. Modern performance geometry also requires more stability due to increasingly