Surly Snuggnut Chain Tensioner - 12mm Black Each Model=Asymmetric 11-Speed Chainring then self-seals to eliminate drips

then self-seals to eliminate drips and spills Easy to squeeze thanks to its flexible

} Shimano 12 speed specific

SRAM Yaw cage technology optimized for use with X-Range chainrings

Misc 303 Disc Brake

Surly Snuggnut Chain Tensioner - 12mm Black Each Model=Asymmetric 11-Speed Chainring then self-seals to eliminate dripsSurly Snuggnut keeps your rear wheel from slipping forward in the dropout under the pedal load from your powerful quads. It's 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. Compatible with 12mm horizontal thru axle dropouts only