Shimano DURA-ACE CN-HG901 11sp Chain sram The SM-EW90 junction box features

The SM-EW90 junction box features an integrated battery level indicator

Half-ring: Adjustable ring connected to adjustment system enclosing half of the head

Muc-Off Dry Lube is a highly versatile

improves durability

with traditional aesthetic and smooth surface slide easily to different riding positions

Shimano DURA-ACE CN-HG901 11sp Chain sram The SM-EW90 junction box featuresShimano Dura Ace HG901 is a premium 11 speed chain engineered for top tier road and mountain drivetrains. Featuring Shimanos SIL TEC surface treatment and an asymmetric plate design, it delivers ultra smooth shifting, reduced noise, and enhanced durability. Compatible with Dura Ace, Ultegra, and XTR systems, its also rated for E bike use and includes a quick link for easy installation. Specifications Use: Road, MTB, and E bike (11 speed systems)