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£51.99

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£51.99

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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

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

Delivery Information

Hargroves Cycles offer Free Delivery for all orders over £9 with in Mainland UK (orders below £9 will be charged £1.99)

Current disptach time of UK Bike orders is 5-7 days.
In Stock Clothing, Parts and Accessories are usually delivered within 2-4 working days, often sooner.

Bikes and Bulky items are sent via TNT Courier and smaller items are sent via Royal Mail 2nd Class Post.

Items over £50 are sent with Royal Mail 1st Class track able service which is emailed to the customer on the day of dispatch.
For full delivery details please see our Delivery Page

International Delivery

Hargroves Cycles delivery all across Europe. Goods are shipped from the UK and are subject to import duties where applicable

For further delivery, pricing and restriction information please view our International Shipping Page

Returns Information

We will happily exchange or refund any item purchased at Hargroves Cycles within 365 days, except gift vouchers and personalized products, except where faulty.

Returned goods must be unused and supplied with their original packaging, unless faulty.

For full details on our Returns procedure please visit out Returns Section.

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Hope Technology is one of the world leaders in engineering bicycle components. Since 1989, owners Ian Weatherill and Simon Sharp have been pushing the industry forward through designing, testing and manufacturing virtually all products in-house at the factory in Barnoldswick, United Kingdom.

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To avoid disappointment please contact the store before visiting to confirm current stock or to arrange to transfer items to desired store. Bikes require additional checks and this may affect estimated dispatch times.

  • Hope T-Rex Cassette 40T Expander