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Description
Ratio Tech 1x11 Wide range assemblyA conversion kit for allowing bikes running Sram 1x11 drop bar drive trains with a 42T max cog size to handle a wider range 11 51T cassette. Sram 1x11 drivetrains have been extremely popular over the last few years on all sorts of gravel and bikepacking bikes but have traditionally been limited to run a 42T max cog size. While that's a great low gear for unloaded riding, when you add camping gear or touring in mountainous terrain it becomes clear
A conversion kit for allowing bikes running Sram 1x11 drop bar drive trains with a 42T max cog size to handle a wider range 11-51T cassette.
Sram 1x11 drivetrains have been extremely popular over the last few years on all sorts of gravel and bikepacking bikes but have traditionally been limited to run a 42T max cog size. While that's a great low gear for unloaded riding, when you add camping gear or touring in mountainous terrain it becomes clear quite quickly that they really need a significantly lower gear. There are a number rof ways around this including converting bikes to run 1x12, but by the time you modify or replace the shifters the costs add up quickly.
Lately we have been increasing the gear range by combining the Ratio Sr52 Cage, a Deore 11 speed 11-51T Cassette and a new chain to make an incredibly affordable gear range upgrade.
The derailleur cage is compatible with mechanical SRAM 1×11 derailleurs with Type 2.x and Type 3 clutches including both road & MTB versions, as well as SRAM 1×12 Eagle derailleurs. Electronic Eagle AXS* derailleurs are not compatible.
The Deore Cassette is compatible with a standard HG freehub body, it does not work on an XD freehub body. Many bikes running Sram 1x11 drivetrains actually use a Shimano HG freehub body. A simple way to check is to look at the smallest cog, if it is a 10T then almost certainly you have an XD freehub body, if your smallest cog is 11t or larger almost certainly it is an HG freehub body.
Kit includes:
RatioTech Sr52 carge including special upgraded jockeywheels.
Shimano Deore Cs-M100 Cassette 11-51T
Shimano 11 speed Chain SLX Grade CN-HG601-11
A competent home mechanic could install this kit or talk to our workshop about having them do the install for you.
This kit makes a great upgrade for customers who have bought a number of bikes we have sold over the years, it is also relevant to a number of bikes we still sell currently.
Some popular examples include
Bombtrack Hook and Hook EXT
Surly Straggler
Surly Midnight Special
Curve Kevin of Steel or Kevin of Ti
Kona Sutra LTD
Salsa Journeyer
Kona Rove DL
Bombtrack Beyond
Some popular examples include
Bombtrack Hook and Hook EXT
Surly Straggler
Surly Midnight Special
Curve Kevin of Steel or Kevin of Ti
Kona Sutra LTD
Salsa Journeyer
Kona Rove DL
Bombtrack Beyond
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Somewhat durable.
Color: Elephant, Size: Small
My dog loves these toys, I think it's the squeaker. I've tried several and this elephant one holds up the best.
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Reviewed in the United States on September 28, 2025
★★★★★ 3
Not tough enough
Color: Elephant, Size: Small
It might be tough, but my 26 pound dog managed to rip it open in record time! The only good thing, the squeaker is a long plastic one and easier to grab before she can swallow it!
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Cute and tough!
Color: Elephant, Size: Small
Update Dec 2025, still going!
This toy has been the subject of much squeaking and death shakes... And more than one tug o' war... And other than looking a little dingy even after washing it's as good as new! No missing bits, no noticeable damage. I have several in the brand, both the larger version for my mastiff, and other styles for the medium-sized dogs. I started buying online because the one store that carries it moved further away. Outshines all other brands I've tried for durability and fun play. In 5years and 9 dogs only 2 have needed replacement. Worth the price!!!
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Reviewed in the United States on April 21, 2025
★★★★★ 2
Would not purchase again
Color: Gorilla, Size: Small
My yorkie tore it up in less than 5 minutes. Not as tough as I thought it would be.
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Great toy
Color: Black/Orange
This brand really makes durable toys. They outlast every other toy my dogs have. One dog loves to get the squeaker out of any toy, but he doesn’t rip this one apart. Obviously it won’t last forever, but no toy does! Some other brands of toys only make it a day or two, while these last months to years.
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Reviewed in the United States on May 10, 2026