Surly Singleator Chain Tensioner


Installing horizontal dropouts on your frame can be difficult and/or expensive, particularly if your steed is of the aluminum variety. The Singleator 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 single-speed drivetrains.The Singleator will fit most derailleur hangers, with adjustments for both chain line and spring tension, making it very flexible. Two spring options are also included so you can have it pulling up or down as you wish

  • Features a triple-sealed spring, large cog capacity, chain guides, fully-adjustable chain line, floating pulley, and a stainless steel pivot bushing
  • Forged main body for strength
  • 11-tooth pulley for smooth, quiet operation
  • Works with both 1/8" (BMX) and 3/32" (geared bikes) chains