Shimano ULTEGRA RD-RX800-GS RX Rear Derailleur 11-SpeedShimano ULTEGRA RD RX800 GS RX Rear Derailleur 11 speed With an integrated chain stabilizer mechanism, the ULTEGRA RX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain tensioner. MODEL NO : RD RX800 GS SERIES : SHIMANO ULTEGRA RX Series Color : Series color Average weight : 248 Remarks : * w o bracket spec available

SERIES                     : SHIMANO ULTEGRA R8000 Series

diglycerin

CS-M8100-12

Combination:

Rotor (Optional): G3/HS1/RT56

multiple shifts (Main lever/rear)   : 4

Model: CS-HG31-8Teeth: 32/34TSpeed: 8 SpeedWeight: approx 310gHyperglide sprockets have a computer designed tooth configuration with contoured shift gates

Total Capacity：41T

Series: Tourney

Long lasting good braking performance

Weight: 89 (Actual Measurement on Scale)

the replaceable pins with optimized arrangement ensure also secure grip