Adding a 42-tooth ‘crawler cog’ to your 1x10 drivetrain may make the climbs easier but it also leaves a big gap between sprockets that can cause shifting problems, or at least require painstaking set-up. Enter OneUp with the RADr cage. Designed to replace both cages on your Shimano Shadow Plus rear derailleur, it moves the top jockey wheel backwards for better shifting between the big sprockets.
It’s straightforward to fit, and the 7075-T6 alloy cage has a low profile to help keep it out of the way of rocks.
