PULLEY OSPW CERAMIC SPEED ALLOY SHIMANO DA9100 & ULT8000 BLACK COATED

This new design has an integrated stop tower for easier mounting. The CeramicSpeed Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world, providing energy savings starting from 2.4 watts over standard Shimano systems. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings. In The Box A complete 13-tooth/19-tooth OSPW System CeramicSpeed Bearing Oil in 15ml dropper bottle