Surly Snuggnut Chain Tensioner – 12mm Black Each. Surly Snuggnut keeps your rear wheel from slipping forward in the dropout under the pedal load from your powerful quads. Its specifically designed for Surly bikes featuring 12mm horizontal vertical-slotted dropouts and is particularly suited for singlespeed application. Snuggnut is CNC-machined for durability and good looks and shares many design features found on Tuggnut and Hurdy Gurdy.

• TECH SPECS