e*thirteen Extended Range Cog

• Extended range aluminum 42T cog to fit SRAM 10-speed cassettes

• 42T is compatible with 36T max cassettes

• Remove the existing 17T and add the Extended Range cog without any additional spacers to create an 11-42 10-speed cassette option

• Cogs come with a longer replacement B-limit screw, to avoid running the derailleur with the stock screw maxed out

• Intended for use with 1x drivetrains. Chainwrap capacity will be an issue for those wanting to use double cranksets