shimano sg chainring letters roadbikereview.com a forum community dedicated to road bike owners and enthusiasts. come join the discussion about bike parts, components, deals, performance, modifications... Category:sports Global Rank:107,272 visits:707.1K pages/Per:1.5 vintage-trek.com Category:cycling and biking Global Rank:697,592 visits:57.0K pages/Per:3.0 ADS