Chape Intérieure + Galets 12V SRAM EAGLE XX1 Gris No CCM Sizes Chest Waist XS 89–94 Size:45 48 Sizes Chest Waist XS 89–94 cm 74–79 cm S 94–99 cm 79–84 cm M 99–104 cm 84–89 cm The 104–109 cm 89–94 cm XL 109–114 cm 94–99 cm XXL 114–119 cm 99–104 cm XXXL 119–124 cm 104–109 cm Measure your chest circumference by running the tape measure under your armpits and across the fullest part of your chest which optimises energy transfer to the pedals: it reduces the dead point of the foot and thus the tension throughout the rest of the leg This kit is specifically designed for Eagle XX1 derailleurs The SRAM Eagle XX1 derailleur kit allows you to replace the pulleys as well as the inner cage of your 12 speed derailleur to restore original performance