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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
4.2 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 3
Love the sheets but GOSH THEY STINK
Color: 19 - Forest Green, Size: Queen (20" X 30")
I have the dark green sheets and bought these for extra cases to match. I would give them 5 stars if it weren’t for the fact that they smell absolutely horrible. I am so surprised after reading reviews that more people don’t mention it?! Maybe it’s more prominent in darker colors but I have washed these now 3 different times even with scent beads and still hate the smell. I wish I could accurately describe what it smells like— it’s just not good and for some reason, body heat only exacerbates it and makes the smell even worse and I wake up feeling like a smell like the sheets… which isn’t a good thing.
Besides that, I do really enjoy them. They feel great on your skin and I love the color. I wish the smell didn’t kill them so badly for me ☹️
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Comfy soft pillow covers
Color: 02 - White, Size: Queen (20" X 30"), Color: 02 - White, Size: Queen (20" X 30")
Absolutely love these pillow cases! I bought 2 sets. After I received them & washed & dried them they did remain wrinkly. I just went ahead and put them on my pillows & the wrinkles went away. I continue to love the feel, coolness & comfort. Will definitely buy more.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Great soft pillow cases
Color: 03 - Navy, Size: Standard (20" X 26")
Pillow cases are beautiful and soft, great quality. I had to return them because standard were too small. I am going to order queen instead.
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Reviewed in the United States on June 9, 2026
★★★★★ 5
These Bamboo Pillowcases Made Me Realize I Sleep Hot
Color: 07 - Cream, Size: Queen (20" X 30"), Color: 07 - Cream, Size: Queen (20" X 30")
I bought these mostly because I kept hearing people talk about bamboo pillowcases and honestly thought it sounded a little overhyped, but I totally get it now. The first thing I noticed was how cool they felt compared to regular cotton. I tend to get warm when I sleep and flip my pillow a million times during the night looking for the cold side, and these actually stay noticeably cooler longer.
They also feel really soft without having that weird slippery texture some silky pillowcases have. My skin has been less irritated lately and my hair definitely looks less frizzy in the mornings. I have thick hair that tangles easily overnight, and these have helped more than I expected.
Another thing I appreciate is that they’ve washed well so far. I was worried they’d pill or lose softness after a wash cycle, but they still feel smooth and nice. They also just make the bed feel cleaner and more comfortable overall. One of those small upgrades that ends up making a bigger difference than you’d think.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Soft and cooling
Color: 08 - Sage Green, Size: Queen (20" X 30")
These are great pillowcases. Very soft, comfortable, and they stay cool throughout the night. They fit perfectly and feel really nice against your skin.
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Reviewed in the United States on May 21, 2026