Weight : 66 g
Watt Saved: 4 – 5 W
Please note :In this version, The NOVA OSPW System for 9100/9150 and 8000 SS/8050 SS is NOT compatible with Ultegra 8000-GS or 8050-GS (medium cage) derailleurs, nor with the clutch equipped Ultegra RD RX800 & RX805.