Fluidity smoothness and noise reduction: the 5.5mm Chorus(TM) chain fully meets the quality and performance standards of the 11-speed(TM) groupsets.
The strength of the treated steel links is absolute and the Ultra-Link(TM) closure system guarantees safety and the long life of the chain.
Technical Specifications:
width 5.5 millimetres
Ultra-Link(TM) fastening system
external links in special new steel
Ni-PTFE anti-friction treatment
2.24g /link