Shimano 105 FC-RS520 12 Speed Crankset Chainring:50/34 Carbohydrates: 25g High performance electronic shift
Platform notes & fabric story
Description
Shimano 105 FC RS520 12 Speed Crankset Chainring:50 34 Carbohydrates: 25g High performance electronic shift Carbohydrates: 25g while decreasing friction The next generation: Shimano 105 featuring Di2 draws on the design philosophy The Science of Speed bringing fresh momentum Specifications