Spurcycle's R-series is available in two mirror sizes to fit drop bar bikes, a 35mm and a 50mm diameter. They both provide a very similar view but the smaller mirror is more challenging to use, a trade-off for the sake of minimal form. We consider the R35 their "pro" (vanity) mirror and the R50 the everyday touring model.

Designed to complement a modern drop bar bicycle. Not compatible with extreme bar geometries or positions. Some Enve bars and others without standard bar plugs also may not work.