OneUp Components Top Chainguide with Bash Guard ISCG-05 V2Eliminate dropped chains Almost every EWS pro runs both a chain guide and narrow wide chainring Combines upper chain retention with lower chainring bash protection Reinforced nylon bash guard and a back plate cut from 8mm thick 7075 T6 aluminum Boost and oval chainring compatible Tool less upper guide flip 5. 5mm of chainline adjustment Single tool install without removing your cranks Includes 3 different sizes of bash plate for compatibility with