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ShimanoGRX RD-RX810 Rear Derailleur - Bike Build


Item # SHIU1AK

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  • Black, Rear ($117.99)
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Item # SHIU1AK

Tech Specs
Cage Lengthmedium
Cassette Range[maximum] 11-34t, [minimum] 11-30t
Gearing1x11, 2x11
Compatibilityexisting 11-speed mechanical Dual Control levers, Shimano GRX levers
Recommended Usegravel
Manufacturer Warranty2 years

Actual Weight

Black, Rear

Claimed Weight

Claimed weights are provided by the vendor.

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Actual weights are measured in-house by the Competitive Cyclist team.

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What do you think about this product?



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.