For R8000/R9100 R9150 R7000 SERIES：

• System for 9100/9150 and 8000 SS/8050 SS

• The overall power savings of the System for 9100/9150 /8000 reach 30%-60%, or more in some cases, over a stock setup.

• The oversized pulley wheels have 3-5 times longer lifetime than the commonly used standard pulleys on the market.

• The 9100/9150 and 8000 SS/8050 SS OSPW system is compatible up to a 32 tooth cassette for both Dura Ace & Ultegra derailluers.

• Please note: The System for 9100/9150 and 8000 SS/8050 SS is compatible with Ultegra 8000-GS or 8050-GS (medium cage) derailleurs, nor with the clutch equipped Ultegra RD RX800 & RX805.