CERAMICSPEED OVERSIZED PULLEY WHEEL SYSTEM
£ 399 ||| $ 599
It’s impossible to completely remove friction in a drivetrain, but Danish component maker CeramicSpeed come as close as anyone with their very smooth OSPW system. The 17-tooth Shimano example here is housed in a carbonpolymide cage. The OSPW system is available with standard bearings or CeramicSpeed’s signature coated ones. The system comes with 10ml of CeramicSpeed bearing oil.