E Thirteen EX cog sprocket E*13's EX cog addsa40 or 42T crawler gear to the top end of your ratios if you remove the 17 or 15T sprocket from your existing 10-speed cassette. READ MORE >>
OneUp Components Sprocket STRUGGLING TO GRIND up those steep climbs but refuse to bin off your single front chainring set-up? One of these dinner-plate-sized cassette sprockets from OneUp Components could be the answer. READ MORE >>