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  • Description
  • Reviews (2)
  • Casettes Guide
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  • Returns & Warranty
  • Product description

    Hope 40t-REx (40t ratio expander) allows you to upgrade your existing 11-36 10spd cassette to give an 11-40 range

    Key Features

    • 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

    "Giving your cassette big teeth for half the cost"

    40T-Rex Tech Specs

    Shimano and Sram specific 40t sprockets have been designed allowing benefits that wouldn't be possible with a larger sprocket size or with a universal type design:

    • 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

  • Hope 40T-Rex Ratio Expander Sprocket Reviews

    Write your own review
    Overall Rating:
    4.7
    out of 5
    4.66
    Build Quality
    5.00
    Performance
    5
    Value For Money
    4.00

    Customer Reviews (2)

    5
    Hope Expander Sprocket

    Easy to fit - does not get in the way of remaining gear sprockets. Seems robust and light.

    Easy to fit - does not get in the way of remaining gear sprockets. Seems robust and light.

    Close review
    5 out of 5
    Build Quality: 5/5
    Performance: 5/5
    Value For Money: 5/5
    4
    Hope Expander

    Does the job, and does it well! Purchased this to go alongside my shimano XT cassette/mech setup and superstar chain ring.

    Does the job, and does it well! Purchased this to go alongside my shimano XT cassette/mech setup and superstar chain ring.

    Close review
    4.3 out of 5
    Build Quality: 5/5
    Performance: 5/5
    Value For Money: 3/5

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