Shimano Ultegra CS-6800 cassette cogs and lockring.

the original 16T cog is missing

Speeds: 11-speed.

Tooth Range: 12-25T.

Silver steel loose cogs from an Ultegra CS-6800 cassette, compatible with Shimano 11-speed road freehub bodies.

Lockring is marked Shimano Ultegra CS-6800, 11 SPEED ONLY, LOCK 40 N·m, JAPAN VIA.

Cogs are stamped 11S with tooth counts for the 12-25T range and feature pinned carrier spiders as shown in the photos.

Weight: 230 g.