• Add-on cog to extend gear range of 10 speed Shimano™ and SRAM™ cassettes
  • Comes in 40T and 42T for use with Shimano™ cassettes and a 42T only for use with SRAM™ cassettes
  • Timed and ramped specific to Shimano™ and SRAM™ cassettes
  • Comes with a longer steel replacement, B-limit screw for your derailleurs

E13 42T Rear Cog Shimano

E13 |
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Description

  • Add-on cog to extend gear range of 10 speed Shimano™ and SRAM™ cassettes
  • Comes in 40T and 42T for use with Shimano™ cassettes and a 42T only for use with SRAM™ cassettes
  • Timed and ramped specific to Shimano™ and SRAM™ cassettes
  • Comes with a longer steel replacement, B-limit screw for your derailleurs