Upgrade for 12-speed Sram Rival eTap AXS derailleursBuilt to offer extremely low friction paired with increased stiffness for loss free shiftingLong tooth profile on lower pulley offers best possible chain retentionLower pulley assembly features a chain catcher to prevent jamsCan be used dependably on or off roadOversized 14 and 19 tooth Kogel pulleysSram Rival eTap AXSBlackUPC/EAN/GTIN: 735201959870