The system consists of Top 14t & Bottom 16t alloy pulley wheels fitted with low friction bearings and a lightweight cage made from 7075 Alloy. The Oversized Pulley Wheel System reduces friction in the pulleys by 45 % and for your optimised performance.
eBay
The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur. The design includes an integrated stop tower for easier mountingFeatures a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimization of the rear derailleur. Coated bearing races increase bearing service life by increasing hardness of race and reducing corrosion. Precision machined aluminum pulleys are durable and lightweight. Carbon fiber cage. Includes an integrated stop tower for easier mounting. Compatible with 9100/9150 and 8000 series - exception being the R8000 GS (long cage) or clutch equipped Ultegra RD RX800 and RX805. Item Specifications: Fits Brand, , Fits Model, Ultegra R8000-SS,Ultegra R8050-SS,Ultegra.
eBay
The system is compatible with Shimano Ultegra r8000 r8050 / Dura Ace r9100 r9150 11s rear derailleur. KCNC Wheel Bearings reduce friction, which gives you a lower rolling resistance. The system consists of Top 12t & Bottom 16t alloy pulley wheels fitted with low friction bearings and a lightweight cage made from 7075 Alloy.
eBay
1pcs R8000 Front Derailleur. 1pcs R8000 Rear Derailleur SS/GS(need choose). Series: Ultegra. Compatible: 2X11 Speed. Brake Type: Hydraulic Disc Brake. Hydraulic Disc Brake Dual Lever (ST-R8020). 1pair R8020/R8070 Hydraulic Disc Brake Set.
eBay
eBay
Shimano Ultegra RD-RX800 Rear Derailleur - 11 Speed Used and working correctly. Please see pictures of condition of the actual item you will receive. No returns, please check this is suitable for your needs. Thank you for looking.
eBay
The system is compatible with Shimano Ultegra r8000 r8050 / Dura Ace r9100 r9150 11s rear derailleur. KCNC Wheel Bearings reduce friction, which gives you a lower rolling resistance. The system consists of Top 12t & Bottom 16t alloy pulley wheels fitted with low friction bearings and a lightweight cage made from 7075 Alloy.
eBay
Shimano item no.: Y5YC98140. Precision sealed bearings in both guide and tension pulleys keep drivetrain smooth and friction-free. Ultegra RD-6800. Ultegra RD-6870.
eBay