Cog 1/8 20t extended sa The Sturmey Archer HSL834 is a 20-tooth cog with a push-on connection, designed for bicycles with internal gear hubs and 1/8" chains. Thanks to its chrome-plated finish, this cog offers high wear resistance and a clean appearance, ideal for city bikes and single-speed applications. The cog weighs only approx. 50 grams and is compatible with the standard 3-spline connection of Sturmey Archer hubs such as the AW, SRF, and X-RD series. The push-on mounting makes replacement quick and easy, making it a favorite in the workshop. A reliable and durable component for bike mechanics who prioritize quality and efficient maintenance. 1/8", bent, suitable for 3-/ 4-/ 7- and 8-speed gear hubs, silver Main color silver System compatibility hub gear Type/kind Article