OSPW System for Shimano Dura Ace 9200 and Ultegra 8100 Series Element and quiet handling from city

and quiet handling from city streets to dirt roads for when you’re feeling adventurous

while still allowing room for a jersey or baselayer underneath

Aerodynamic performance without compromise

forged in the heat of Grand Tour battle

OSPW System for Shimano Dura Ace 9200 and Ultegra 8100 Series Element and quiet handling from cityThe 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