Shimano Deore XT Dyna Sys RD M780 Shadow Rear SGS Derailleur user reviews : 5 out of 5 - 3 reviews - mtbr.com
DYNA-SYS | SHIMANO BIKE COMPONENT
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New 10-speed Dyna-Sys Shimano XT and SLX for 2010 - BikeRadar
Shimano XT FC-M8100-1x 32T Chainring Dyna Sys II MTB Bike Crankset/BB 170mm | eBay