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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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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
4.8 ★★★★★
Based on 1837 reviews
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Product Reviews
★★★★★ 5
Great chew toy
Size: Tripod
This is great and my dog loves it. He is 7months old and is a golden doodle. He loves to chew and was starting to destroy other toys. This is great for him to get to chew and it makes noises so that keeps him engaged for a while.
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Reviewed in the United States on May 3, 2025
★★★★★ 5
Great product! Durable, chewable, awesomeness!
Color: Grilled color, Color: Grilled color
Very well made and durable. My dog hasn't left them alone since i opened them. Hes been at it for about 45 minutes straight now! Lol. He's an avid chewer. He will chew thru and fabric or cloth toys in less then a day. But these are what he really likes because they take time to chew apart. The shapes, are great, because one he props up with his paws and chews and it seems like it's easy to grip for him. Thru are hard so if you have hard floors it can get a bit noisy when he drops them. Over all this is a great product. Safe, chewable, long lasting, fun shape looks real to him (i think lol), Me and my dog Lucky are both happy with his new toys!
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Recommend for very heavy chewers
Color: Grilled color
My aggressive chewers love these! It’s been a few weeks and still in one piece and man they chew them for hours on end.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Amazingly great product!
Color: Grilled color
I’m not just saying this, ok, this is not hyperbole: this is THE best nylon bone for chewing that I have ever purchased. And you get TWO of them for relatively less expensive than most chew toys give you one! I have 2 golden retrievers, and if you know goldens, you know that they are some of the most relentless and powerful chewers around. So I can’t give them almost any toy other than rubber stuff or it will be destroyed in a period of time that doesn’t make it worth it. One of them even figured out how to destroy a supposedly indestructible toy made out of kevlar! She was able to get into it through the seam, which is not kevlar ha ha. Anyway, I digress; I never even considered nylon chews because they suck! Usually. Usually my dogs in the past have lost interest with them in less than a day. I took a chance on these mainly because of the novel shapes, the fact that they give you two, and the low price. Both my goldens LOVE these! Not just for one day, but going on weeks now! I don’t know if it’s the flavor or what, but I will see them gnawing on one of them at some point every day. And they CAN’T destroy them (I knew nylon was good for that, but it was the “who cares” attitude of my previous dogs toward nylon that kept me away). Both the “ribs” and “steak” (quite clever) are a bit worn on the edges now, but they look like they will be around for years. You can’t go wrong with this product (unless for some reason your dog does not like the flavor, but the flavor seems to be what draws my dogs to them). I highly recommend this (these) as the most cost-effective chew toy I’ve ever purchased.
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Reviewed in the United States on November 1, 2025
★★★★★ 4
Great for larger dogs
Color: Grilled color
I think they were heavy duty and durable, but they were too heavy for my dog. The seller was excellent though!
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Reviewed in the United States on May 31, 2026