TRP's new one-piece six-bolt disc rotor in 2.3mm thickness, coming in all sizes of 223 mm, 220 mm, 203 mm, and 180 mm. Details: 47% increased torsional stiffness 8% better cooling capacity Rotor wear indicators Improved design reduces vibrations and increases stiffness and power 2.3mm thick Compatibility: TRP S01E 2.3mm rotors are compatible with the following: Hub: 6-bolt hubs Brake Set/Caliper: TRP DH-R, DH-R EVO, Trail EVO and E-MTB