Shimano Ultegra RDR-8000 GS 11-speed

FEATURES of the shimano,Ultegra RD-R8000,rear,Derailleur Sleek,integrated appearance New low-profile design Race endurance Optimized slant angle Wide compatibility RD-SS covers:,11-25T to,11-30T RD-GS covers:,11-28T to,11-34T Cable adjuster B-axle_hollow axle Direct attachment (conventional) Pulley_G pulley bearing Pulley_sunken type pulley boLT,Pulley_T pulley bearing Top-normal spring type_shadow RD Specifications Average weight: 210 g Remarks: W/o bracket spec available Compatible chain: HG-EV,11-speed/ HG-x11 Fluoric coated link bushings:,4 Low sprocket_Max:,34T Low sprocket_Min: 28T Max.,front,difference:,16T Pulley_Teeth:,11T Pulley cage: GS,rear,speeds:,11 Top sprocket_Max:,12T Top sprocket_Min:,11T Total capacity:,39T Mount: Direct attachment (conventional) Tension pulley bearing: Sealed bearing Guide pulley bearing: Sealed bearing Max low sprocket:,34,30 Min low sprocket: 25 28