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Drivetrain >> Cassettes - 10 spd

Hope 40T-Rex Cassette Cog


Hope's 40T-Rex (ratio expander) replaces a smaller cog in a 10spd cassette with a big 40T cog!  this gives you a range of 11-40T in 1x10 drivetrain.  Only fits cassettes with separate cogs at the bottom - see below for details.  The deraileur B-Screw has to be adjusted to allow the top jocket wheel to clear the big 1st gear cog!

  • Adapts a 11-36 10spd cassette to give an 11-40t range
  • T-REx ring installs behind existing cassette, replacing one of the smaller sprockets, usually 17t
  • Shimano and Sram specific tooth profiles and shifting
  • Compatible with:
  • Shimano XT and XTR 11-36 10spd cassettes
  • Sram PG1030, PG1050 and PG1070 11-36 cassettes
  • Precise matching of the tooth profiles and shifting points specific to each cassette;
  • Perfect mating of supporting tabs reducing flex and aiding shift performance;
  • Lower B-tension adjustment is needed ensuring good shifting throughout the cassette range compared to fitting a 42t
  • Compatible with: Shimano XT and XTR 11-36 10spd cassettes and Sram PG1030, PG1050 and PG1070 11-36 cassettes
  • Hard anodized 7075T6 aluminium
  • Available in black, silver or gold hard anodised finish
  • Weight: 74g

Price Stock

40T-Rex Black Shimano

     GBP60.00   GBP57.00 
    3

    40T-Rex Black SRAM

       GBP60.00   GBP57.00 
      1

      40T-Rex Gold Shimano

         GBP60.00   GBP57.00 
        0

        40T-Rex Gold SRAM

           GBP60.00   GBP57.00 
          1

          40T-Rex Silver Shimano

             GBP60.00   GBP57.00 
            1

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