Description |

The Surly Singleator is a chain tensioner made for single speed setups using frames with vertical dropouts. It mounts directly to a derailleur hanger and gives riders a simple and adjustable way to take up excess chain slack when a frame does not allow traditional chain tension adjustment. Surly developed it for single speed drivetrains and describes it as one of its original products for riders getting into derailleur free bikes.

The main body is forged for strength, and the design includes a triple sealed spring, chain guides, a floating pulley, a stainless steel pivot bushing, and a fully adjustable chainline.

Features |

Mounts to a derailleur hanger for vertical dropout single speed drivetrains
Forged main body for strength
Triple sealed spring design
Fully adjustable chainline
Floating pulley and chain guides
Stainless steel pivot bushing
11 tooth pulley for smooth and quiet operation
Works with both 1/8 inch and 3/32 inch chains
Includes two springs for upward or downward tension adjustment

Specs |

Model	Singleator
Brand	Surly
Product Type	Chain tensioner
Mounting	Derailleur hanger mount
Main Body	Forged
Spring	Triple sealed
Chainline Adjustment	Fully adjustable
Pulley	Floating 11 tooth pulley
Pivot Bushing	Stainless steel
Chain Compatibility	1/8 inch and 3/32 inch
Included Springs	Push down spring installed, push up spring included in packaging
Not Compatible With	Coaster brake, fixed gear, multi cog, or multi ring drivetrains
Use	Tensioning excess chain slack on vertical dropout single speed drivetrains

Drivetrain

Drivetrain Detailer Brush

Singleator Chain Tensioner