OSPW System for Shimano Dura Ace 9200 and Ultegra 8100 Series Element while also remaining soft against

while also remaining soft against the skin and quite breathable

Together they create AfterShock technology

forged in the heat of Grand Tour battle

but too often the price tag puts them out of reach

Designed with your ultimate comfort in mind

OSPW System for Shimano Dura Ace 9200 and Ultegra 8100 Series Element while also remaining soft againstThe CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low friction bearings and unique overall design. Features 13 tooth upper and 19 tooth lower, aluminum pulley wheels with Grade 3 Silicon Nitride balls Robust cage crafted from polyamide and carbon fiber for durability and light weight Hardened steel bearing races Compatible with Dura Ace 9200 and Ultegra 8100