This part is used on Shimano Shadow rear derailleurs starting 2013. Bolt included.
Improves shifting performance on 1-10 systems.
Increases chain wrap, eliminates the need to drastically thread in the b-tension screw.
Replaces the Direct Mount link on 2013 or later Shimano 10-speed Shadow+ rear derailleurs to reduce premature shifting degradation.
Shimano Shadow direct link Rear DerailleurWill fit a cassette size of 40T or biggerWorks with any 11-40t or 11-42t 10-speed cassette