The sprung tensioner from Torpedo7 makes it simple run a single speed set up, without modifying your bike frame.  It bolts into most vertical dropouts in place of your derailleur in minutes. The Torpedo7 Single Speed Sprung Tensioner is designed for Street, Dirt Jump, Trials, or simply for purists that fancy a new challenge - negotiating the same old trails on a single speed bike really separates the men from the boys.

The Sprung tensioner uses a pivoting aluminium arm supported with a strong spring to constantly tension the chain, the chain rolls smoothly and quietly on a single pulley-wheel.

Features:

• Alluminium arm
• 11 tooth pulley
• Strong coil spring provides constant tension
• Pulley wheel is laterally adjustable for chainline
• Weight:   115 grams
• Made in China