Fluidity, smoothness, and noise reduction: the 5.5mm Chorus chain fully meets the quality and performance standards of the 11-speed groupsets. The strength of the treated steel links is absolute, and the Ultra-Link closure system guarantees safety and the long life of the chain.
Width 5.5 millimetres
Ultra-Link fastening system
External links in special new steel
Ni-PTFE anti-friction treatment