Shimano Saint RD-M820-SS1 Rear Derailleur – 10 Speed Short Cage Black. Shimano Saint RD-M820 Rear Derailleurs

• Shadow+ chain stabilizer provides a simple lightweight chain control solution
• Mode Converter allows the derailleur to track different type of cogsets
• DH mode is a close ratio mode to track up to a 23T-28T low gear
• AM mode is optimized for a wider ratio cogset with a 32T – 34T low gear

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