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  1. #1
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    Wide (wider) range CX1 groupo

    Hi, I'm building a new bike and I'd love to fit SRAM's new CX1 groupo but I have one concern - Gearing. My current budget CX bike is a 1x8 with a 1-1 low gear ratio (34 front, 34 back)...Very low for most people but it suits me and the local terrain perfectly, even slightly lower would be great as a 'bail out gear'.

    The trouble is that the CX1 groupo's lowest ratio cassette is 11-32. An 11-36 good and an 11-40 would be absolutely perfect, giving me the range I want and the opportunity to run a bigger front ring...My question is, is it possible with this groupo?

  2. #2
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    Quote Originally Posted by Hogdog View Post
    Hi, I'm building a new bike and I'd love to fit SRAM's new CX1 groupo but I have one concern - Gearing. My current budget CX bike is a 1x8 with a 1-1 low gear ratio (34 front, 34 back)...Very low for most people but it suits me and the local terrain perfectly, even slightly lower would be great as a 'bail out gear'.

    The trouble is that the CX1 groupo's lowest ratio cassette is 11-32. An 11-36 good and an 11-40 would be absolutely perfect, giving me the range I want and the opportunity to run a bigger front ring...My question is, is it possible with this groupo?
    i think you'd need to switch to the x1 for the rear derailleur and cassette.

  3. #3
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    It would be great if I could, are the pull ratios the same?

  4. #4
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    Does the CX1 11spd cassette require special rear hubs like the mtb xx1 cassette?

  5. #5
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    The XO1 and XX1 derailleurs are not compatible with the SRAM road levers.

    If you want that kind of rear range, your best best would be SRAM 10 spd shifters, SRAM 10 Speed Type 2 mountain derailleur and either an 11-36 cassette or an 11-36 cassette with a 40T add on from someone like Wolftooth. Add a wide narrow front chainring and you should have what you are looking for.

  6. #6
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    Quote Originally Posted by uclamatt2007 View Post
    The XO1 and XX1 derailleurs are not compatible with the SRAM road levers.

    If you want that kind of rear range, your best best would be SRAM 10 spd shifters, SRAM 10 Speed Type 2 mountain derailleur and either an 11-36 cassette or an 11-36 cassette with a 40T add on from someone like Wolftooth. Add a wide narrow front chainring and you should have what you are looking for.
    That's not what he's asking- he's asking if the new CX1 groupset requires the same XD hub as SRAM's XXI and XXO MTB groupsets.

    According to Bike Rumor, it does NOT require the special hub;
    Race More with Less with New SRAM Force CX1 Cyclocross Group (UPDATED)
    "There isnít a specific CX1 cassette or chain, as the system is designed to work with the current Force components. That means no need for an XD driver, but also that the system wonít have quite the wide range as XX1."

  7. #7
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    Quote Originally Posted by RRRoubaix View Post
    That's not what he's asking- he's asking if the new CX1 groupset requires the same XD hub as SRAM's XXI and XXO MTB groupsets.
    It wasn't what paleh)rse was asking, but it is what the OP was asking.

  8. #8
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    Re: Wide (wider) range CX1 groupo

    Quote Originally Posted by RRRoubaix View Post
    That's not what he's asking- he's asking if the new CX1 groupset requires the same XD hub as SRAM's XXI and XXO MTB groupsets.

    According to Bike Rumor, it does NOT require the special hub;
    Race More with Less with New SRAM Force CX1 Cyclocross Group (UPDATED)
    "There isnít a specific CX1 cassette or chain, as the system is designed to work with the current Force components. That means no need for an XD driver, but also that the system wonít have quite the wide range as XX1."
    It looks like he was answering the OP, but thank you very much for that great info! That certainly makes it much easier for everyone to upgrade to this group if they want to. Excellent.

    A friend of mine did have one concern, though: he suspects they may have an even better Red-level cx group in store for next year. It will be interesting to see if that's true, and also interesting to see just how much weight they can shed from the current cx1. (As it stands, I think the BSA cx1 is currently ~60g heavier than the mtb xx1). For that reason, my friend opted to use the mtb xx1 with a 10 speed cassette on his cx bike. (156 q factor).

  9. #9
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    Thanks for your input people, perhaps I should clarify what I'm after. It has to be a 1x11 with as wide a range as possible and it has to have hydraulic brakes. The closest I've seen so far is (as uclamatt2007 says) is a mixed SRAM set up with 11-36 but that's 1x10 with mechanical brakes.

    The other option I'm looking at is the new 11-40 XTR cassette and derailleur in combination with ST-RS685 105 hydraulic levers but again, I don't know if they're compatible.

  10. #10
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    I have the cx1 group and confirm that it does not require a specific sram hub as does the new 11 speed with 10th. I'm also looking to add more of an escape gear 34 / 36 on the rear any ideas of which cassettes would be compatible?
    Are the cx1 shifters compatible with the xx1 xx0 cassette.

  11. #11
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    hit up sram. they suggest their PG1170 11-36 will work with a medium cage CX1 mech. i'm going to assume the reason the CX1 mech doesn't state the 11-36 is compatible, is because the 11-36 cassette didn't exist when it was released.

    https://www.sram.com/sram/road/produ...11-36-cassette
    Designs by Mitch - for all your drafting and design requirements!

  12. #12
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    I just went through this same process. Your options for wide-range with hydraulic are:
    CX1 (11-36)
    S700 hydraulic lever with 10-speed MTB rear mech (11-36, possibility of 40T or 42T add-on)
    Ultegra hydraulic (11-32, maybe 11-36 would work as well? Not a clutch type derailleur)
    XTR Di2 with Ultegra hydraulic levers (11-40)

  13. #13
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    you can also use a 10 speed mountain bike derailleur with 11 speed shifters. sram 10spd road/mtb and 11spd road use the same pull ratio.
    Designs by Mitch - for all your drafting and design requirements!

  14. #14
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    I'm assuming you're not racing, but if you are, isn't it faster to run if you are in a scenario that needs gears that low?
    Atomic batteries to power...turbines to speed...

  15. #15
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    Old thread BUMP. Looks like the new Force 1 groupset won't be available for a bit so I might have to settle for CX1 for my new bike. Will the CX1 medium cage deraileur (I think they don't make a long cage version) be capable of handling a 10-42 XX1 or X01 cassette? Might even try the 44 tooth cog adapter if it will work. Happy to buy longer B screw if needed.

    I need a big range 1x setup for dirt road hill climbing rides in the 100-200 mile range with 15,000+ feet of climbing where I will need a really easy bailout gear, but also want a decent amount of speed for flats. Probably going to run with 36 tooth front ring.

  16. #16
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    Quote Originally Posted by Couloirman View Post
    Old thread BUMP. Looks like the new Force 1 groupset won't be available for a bit so I might have to settle for CX1 for my new bike. Will the CX1 medium cage deraileur (I think they don't make a long cage version) be capable of handling a 10-42 XX1 or X01 cassette? Might even try the 44 tooth cog adapter if it will work. Happy to buy longer B screw if needed.

    I need a big range 1x setup for dirt road hill climbing rides in the 100-200 mile range with 15,000+ feet of climbing where I will need a really easy bailout gear, but also want a decent amount of speed for flats. Probably going to run with 36 tooth front ring.
    Force 1 and Force CX1 are pretty crazy. They are the same! It might be cheaper to buy piecemeal. Also, the Rival 1 parts are starting to arrive, so check on those.

    They do make short, medium and long cage Force 1 / CX1 rear derailleurs: https://www.sram.com/sram/road/produ...railleur#specs

    Notice that only the long cage can handle the 10-42 cassette. (And of course, you need an XD driver on your hub.)

  17. #17
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    i built a 2016 Boone disc with Force1 groupset , long cage RD and 10-42 X01 cassette

  18. #18
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    i have 2 parts not installed : new 11-36T 11 speeds cassette and mid cage Force1 RD ... anyone interested of (before i put them on classified )?

  19. #19
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    If its a budget CX 1x then why not go with a 10 speed. You can still get it light, pleanty of used parts and can be light. I'm building one with a used Red 10speed, Used mtb R-der, and a stock 36t cassette (heavy). Basically have the whole groupo for about 200 bones usd.

    Also, anyone here using 11 speed for CX or MTB applications? Yes 11 is awsome on the road (although i've ridden campy's 11 and it all felt a little flexy/spngey to me,) but what about cross and MTB. Would love to hear long term results after a season or two.. sure it felt and worked sweet and crisp out of the showroom floor and the first couple of rides but what about long term?

    It seems that 10 speed (and even 9 for that matter) would be a better option because:
    1. Its a little more durable
    2. shed mud better (think of the spacing in between the casette teeth and chain links)
    3. should be a little lighter (one less cog bro)
    4. wears longer because cogs and chains are not as thin

    Could be my stoner-philosophy over thinking it but i remember when 10 speed came out and all the crossers we clamoring for older top-of-the-line campy and shim groupos because of the same concerns above.
    just say'n and wonder'n

  20. #20
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    mack - that's about like my recent build. red 2x10 shifters, x7 type 2.1 long cage RD, 11-36 cassette.

    here's something you might want to know, or perhaps you've already noticed. most 11-36 10 speed cassettes are 11-13-15-17-19-22-25-28-32-36. If you're using the small end of the cassette going fast (or not that fast if you have a small chainring ) it is a *massive* jump between 13 and 11. It's huge and I hate it on my CX bike, even though it never bothered me on my MTB.

    Only Sram X0 and XX level 10 speed 11-36 have the 12T! (edit) the cogs are: 11-12-14-16-18-21-24-28-32-36. The XG-1080 is the cheapest cassette with the 12T that I've found, but it's still a lot more money than a PG-1030 11-36. (If you can get it for under $200, you're doing great.)

    The XG-1080 is so expensive that I have a suggestion, if you really want the 12T. Buy a 11-36 PG-1030, and a 11-32 PG 1050.. they are like $45-55 each. Then take the 12T off the 11-32 and trade it for the 13T.

  21. #21
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    ..After more thought, obviously you wouldn't want to just swap the 12 for 13. That would make a massive jump from 12 to 15. You would swap everything except the 3 largest and the 11.

  22. #22
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    Quote Originally Posted by ColinL View Post

    They do make short, medium and long cage Force 1 / CX1 rear derailleurs: https://www.sram.com/sram/road/produ...railleur#specs
    Interesting. Thanks for that. I can't find the long cage cx1 rear deraileur anywhere online though-- anyone know where to find one? I guess it's not too popular.....

  23. #23
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    Quote Originally Posted by Couloirman View Post
    Interesting. Thanks for that. I can't find the long cage cx1 rear deraileur anywhere online though-- anyone know where to find one? I guess it's not too popular.....
    Easily found on eBay: SRAM Force 1 Type 2 1 Long Cage Rear Derailleur | eBay

    Be careful searching on ebay- you will get hits for medium and short cage even after typing 'long'. (I just did.) Read the descriptions carefully.

    Also - consider a Rival 1 long cage. It's half the money: SRAM Rival 1 Type 2 1 Long Cage Rear Derailleur for 11 Speed Cassettes | eBay

  24. #24
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    Sweet! Nice ebay find. Any real functional difference between force and rival rear deraileur? Thats a BIG price difference for only like 12 gram savings......

  25. #25
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    yep, 12g and the graphics. that's it. some people really like things to match, but I'd buy the rival RD.

    also, rival 22 shifters can be bought one at a time, but the brake-only lever for the left when running 1X isn't available yet... that I've seen.

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