Disque SHIMANO RT MT900 CENTER LOCK Externe Diameter:180 mm Sizes Chest circumference (in cm) PBS_TROY036429 Sizes Chest circumference (in cm) Waist circumference (in cm) Hip circumference (in cm) Waist (in cm) XS 88 91 70 74 89 95 165 178 S 92 95 75 80 94 100 173 188 M 96 100 81 86 99 106 178 190 L 101 106 87 92 105 110 181 195 XL 107 113 93 99 109 116 >185 XXL 114 121 100 106 115 121 >185 Measure your chest circumference at the widest part of your torso and will be particularly effective as a rear tyre the design is optimised to clear mud and extend brake pad life The SHIMANO RT MT800 Ice Tech Freeza disc delivers consistent braking power in all riding conditions