The Shimano Compatible Cassette Cog at J&R Bicycles is a durable quality cog splined for Shimano HG freehub capability and made from tough chromoly alloy. The steel construction with chrome finish allows for long-lasting superior performance and weighs under 2oz. Recommended chain size is 3/32" yet 1/8" will also work. FEATURES Steel with chrome finish Cogs are splined for Shimano HG freehub compatibility Compatible with 3/32" and 1/8" chains FIT: Shimano compatible cassette cog (Redline, Bombshell, Rhythm, SINZ, Excess, OEM and more) CHAIN FIT: 3/32" recommended (1/8" can be used as well) MATERIAL: Chromoly steel WEIGHT:1.4oz/39.6G (16t) J&R Helpful Hint: Cogs and sprockets wear over time. We recommend replacement every 6 months due to chain wear.
