ShimanoGRX RD-RX810 Rear Derailleur - Bike Build
Item # SHIU1AK
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What do you think about this product?
June 20, 2020
To be clear: is this compatible with existing Shimano 11sp road brifters? (I have Ultegra R8020 mech and am unhappy with slack tension and chain slap, also occ ride gravel with my road bike). Would like to upgrade without major overhaul.