Surly 1x1 Singleator – Chain tensioner, black

A robust and versatile chain tensioner for converting to single-speed. The forged arm ensures high stability, whilst the chainline can be precisely adjusted. Compatible with 1/8" and 3/32" chains – ideal for single-speed set-ups, commuter bikes or conversions with variable chain lengths.
It is particularly commonly used when fitting a Rohloff hub to a Surly Ogre, where clean and stable chain tension is crucial.

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