• Ultegra RD-R8000 tension and guide pulley set
• Precision sealed bearings in both guide and tension pulleys keep drivetrain smooth and friction-free
• Compatible with RD-R8000-GS, RD-R8000-SS, RD-R8050-GS, RD-R8050-SS, RD-RX800-GS, RD-RX805-GS, RD-RX812, RD-M8000-GS, RD-M8000-SGS, RD-M8050-GS, RD-RX817