Oneup components expander sprocket cog kit
Oneup components expander sprocket cog kitthe oneup components sprocket gives you 90 of the benefit of 1x11 systems at 10 of the cost incredibly simple to install it fits behind most 11 36 cassettes displacing one sprocket from the main cluster ideal for upgrading your 10 speed to a wide range cassette oneup components is a small team of passionate mountain bikers dedicated to bringing genuine value to the mtb market oneup was founded by three former race face engineers chris john an