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Hope 40T-Rex Ratio Expander Sprocket

Now £54.00
Save 10% RRP: £60.00
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2 reviews
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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

Casettes Guide

What are cassettes?

A bike cassette is the cluster of rear gear cogs attached to the rear wheel.

Who needs a cassette?

Any conventional derailleur-geared bike has a cassette, whether it’s a road bike, a mountain bike or a hybrid. The alternatives are a singlespeed or a hub gear on the rear wheel.

What are the choices?

The main difference between cassettes is the number and size of gear cogs on them. Seven, eight, nine, 10 and 11-speed are the most common.

What should I buy with them?

If you’re replacing your cassette, sometimes you have to replace other parts of your drive train such as your chain or chainrings. This is because they wear evenly together.

Anything else?

With some cassettes you don’t need to replace the whole unit. Instead, just part of the cluster is detachable, so you only swap out the most worn cogs.

Delivery & Guarantee

Christmas Delivery

We will try our very best to get your products delivered to you before Christmas, but due to Santa's overspill into our delivery services, we would like to make you aware that while we are making every effort to deliver your order to you in time for Christmas, there may be a potential risk of delay.

The last date to order a bike that is available for Christmas delivery is 5pm on Tuesday 18th December. For all other items the last date to order items that are available for Christmas delivery is 12pm on Wednesday 19th December.

You can easily spot which items are guaranteed for Christmas delivery with the icon. Choose your size and colour to see if the item qualifies for Christmas delivery.

UK Delivery Information

We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE to mainland UK, regardless of the size and on all orders over £20.

Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.

Please note that Pre-Order dates can sometimes change due to updated stock information.

Click here for more UK and international delivery information.

Returns & Warranty

It's easy to return a product with our 365 day, hassle free returns. 

We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).

Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.

If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.

For more information please visit our Returns & Warranty page.

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