Hope 40T-Rex Black

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Product Reference: HOP40TREXBKSRAM
Upgrades your Drivetrain without needing to change your Groupset. Shimano and Sram compatible.
(RRP £60.00 Save 11%) £53.70
Stock Status: 1 In Stock

Hope's 40T expander sprocket brings 11 speed range to 10 speed users. This is a much much cheaper alternative to getting a whole new drivechain!

The Hope T-Rex ratio expander allows you to upgrade your existing 11-36 10spd cassette to give an 11-40T range. The T-Rex simply installs behind your existing cassette and replaces one of the smaller sprockets, usually 17T.

Shimano and Sram specific 40T sprockets have been designed, this gives us the following benefits which wouldnÂ’t be possible with a larger sprocket size or with a universal type designÂ….


  • 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.
  • Sram PG1030, PG1050 and PG1070 11-36 cassettes
  • Hard anodised 7075T6 aluminium

Most in-stock orders placed by 4pm are sent the same day. There are multiple delivery options available for you at the checkout from free standard delivery through to next-day courier if you need it super fast!

UK Delivery

We offer free UK delivery on all orders over £15.

UK orders are sent by Royal Mail or DPD. We offer:

  • Standard Delivery - free over £15 or £1.99
  • Priority Tracked 24 - £2.99
  • DPD Next Day - £5.99
  • DPD Saturday - £9.99

European Delivery

We offer free European delivery on all orders over £75 - excluding bikes.

European orders are sent on fully tracked services by Royal Mail, DPD, TNT or Asendia. The courier used depends on your country and the size and weight of your order. Bikes are always sent by DPD or TNT.
  • Standard Tracked Delivery - free over £75 or £7.99
  • Bike Delivery - £90


You can return any unused item within 30 days in original condition for a full refund or exchange. A returns form is included with every order or you can generate a return online in your account page.

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  • Hope
  • MTB
  • Black