Surly Singleator Chain Tensioner
The Singleator has been designed for any vertical dropout frame with derailleur hanger to convert to single speed.
It mounts right up to your derailleur hanger and provides a simple, effective and adjustable means of tensioning the excess chain slack found in vertical dropout singlespeed drivetrains.
The Singleator features a triple-sealed spring, large cog capacity, chain guides, fully-adjustable chain line, floating pulley, and a stainless-steel pivot bushing.
- Compatibility: 1/8" (BMX) or 3/32" (Geared Bikes) Chains
*Images are from Surly