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Surly - Hurdy Gurdy Chain Tensioner - 9/10mm Axles

Product information "Surly - Hurdy Gurdy Chain Tensioner - 9/10mm Axles"

The Surly Hurdy Gurdy is a stainless-steel chain tensioner designed to prevent rear wheel slippage in semi-horizontal, forward-facing dropouts, like those on the Surly Cross-Check. 

Its construction provides long-term durability, while dual axle holes allow for a wide range of fore/aft wheel adjustment. Compatible with standard quick-release skewers, bolted axles, and nutted axles up to 10mm.