Surly 1x1 Singleator - chain tensioner, black

Robust and versatile chain tensioner for converting to singlespeed. The forged arm ensures high stability and the chain line can be precisely adjusted. Compatible with 1/8" and 3/32" chains - ideal for singlespeed setups, commuters or conversions with variable chain length.
Used particularly frequently when mounting a Rohloff hub on the Surly Ogre, where a clean and stable chain tension is crucial.