Surly Hurdy Gurdy Chain Tensioner. Hurdy Gurdy is another nifty device that keeps a rear wheel from slipping forward in the dropout under pedal load. Designed for Surly Cross-Check’s semi-horizontal front-loading dropouts, and will also work on many other similar dropouts
Investment cast of stainless steel for durability and good looks.
![Deore RD-M591 Der. [Long]](https://dev.perennialcycle.com/media/catalog/product/cache/c74721b30674da8ef4088b970b01e286/E/v/EvoMagento-SHI-7590_2.jpg)
![11 Speed Chain PC-1130, 120 Links [Silver]](https://dev.perennialcycle.com/media/catalog/product/cache/c74721b30674da8ef4088b970b01e286/1/1/11_Speed_Chain_PC-1130_120_Links_Silver.jpg)
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