If you're reading this, you probably know what you're doing. The Shimano Saint Rear Derailleur Chain Unit is basically the friction adjuster and roller clutch that is the heart of your Shimano clutch goodness. If, for whatever reason, a rebuild is necessary, these are the parts you need. These parts are compatible with a range of Saint, Deore, XT, SLX and ZEE derailleurs, see specs below.
Shimano Saint Rear Derailleur Chain Unit Specifications:
OEM Shadow+ chain stabilizer unit for Saint RD-M820, XT RD-M786, SLX RD-M675, ZEE RD-M640 and Deore RD-M615 rear derailleurs
The original unit had actually stopped working cause the rear derailleur clutch to bind up. The grease was completely dry, so I was glad to have this as a replacement unit. Derailleur is back to work as originally intended.
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Strong, reliable and affordable. What more could you
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