OneUp Components Underbash Only, ISCG05 Black Guards & Bashrings

- Lower chainring bash protection without upper chain retention \n - Reinforced nylon bash guard and a back plate cut from 8mm thick 7075-T6 aluminum \n - Boost and oval chainring compatible \n - 2.5mm chainline adjustment \n - Designed for frames with 2 ISCG-05 tabs only (Evil, Rocky Mountain, etc). Should not be used on frames with 3 ISCG-05 tabs \n - Includes 3 different sizes of bash plate for compatibility with chainrings from 28-36t