SRAM XX1 crankset and chainring actual weight

We’ve given the new SRAM XX1 1×11 component group quite a bit of early coverage, including some of the very first close up photos and Saris’ test ride impressions from Crankworx.

Now, finally, we’ve got a complete group in for a long term review. Well, almost. We’re still waiting on a Driver Body freehub bit so we can actually put the cassette on one of our wheels. Industry Nine should be coming to the rescue any day now, at which point we’ll do a full install and first impressions post from our local trails in NC.

But, we just couldn’t wait to throw everything on the scale, so here’s the official weigh in for production XX1 parts. Starting with the driveside of the crankset with a 36T chainring, that half comes in at 290g…

SRAM XX1 1x11 crankset actual weight for non-drive side crank arm and spindle

The non-driveside crank arm includes the spindle (BB30, in this case) and tips in at 272g.

SRAM XX1 chainring and bottom bracket bearings actual weight

A 34T chainring comes in at 56g. They also included fresh bearings for a BB30 bottom bracket, including spacers, caps and retention clips, which add up to 56g.

SRAM XX1 trigger shifter and rear derailleur actual weights

The trigger shifter is 110g (rear only, obviously) and the rear derailleur is 241g. Keep in mind, that includes the addition of their new Type 2 clutch mechanism. Overall, the mech has a lot of visual heft – it’s much beefier looking than the standard XX rear derailleur.

SRAM XX1 cassette and chain actual weight

XX1 Cassette is 265g and chain is 252g.

Group total, excluding the BB bearings and parts is 1,430g. Compare that to the claimed weight of 1,639g for a complete XX group (including both shifters and a front derailleur), and you have a savings of 209g (0.45lbs, or 7.16oz). So, almost half a pound!


  1. I got mine yesterday. Waiting on the FHB as it seems that everyone snatched up the DT ones.

    If you have never seen one of these cassettes, the photos don’t do it justice. The black portion on the back is bigger than a 160mm rotor.

    The fit and finish on all the parts is seriously well done. Can’t wait to ride it.

  2. Installed XX1 a few days ago. Got one ride on it. Nothing too rough on the downhill side. So not a good ride to evaluate the chainring’s ability to hold the chain on. However, did drop about a lb from my bike. Looks sick. Flawless shifting. I would recommend a 30tooth chainring for a 29er wheel

  3. the bcd is some crazy proprietary one. ballz. it would have been nice to use the front chainring and not have to BUY ALL NEW STUFF.

  4. You can mount the chainring & spider combo on a normal x9/aka/x0/s2200 crank arm, or just run th ecranks only with type 2 and 10speeed 11-36 and get MOST of the chain retention solution

  5. Are there any reviews on how long the cassette will last over a regular 9 or 10 speed 990 level cassette?
    Will there be a less expensive cassette or even have the rear derailleur trickle down to 9 or 10 speed groups?

  6. I was going to upgrade my 2×9 to a 1×10 but now I might as well hold out until they come out with an x9 version of this that’s compatible with normal chainsrings! Next year I hope.

  7. That chainring is the supposed linchpin to XX1 chain retention. Besides being unramped, it has taller teeth, so I’m not sure you’d want to run it with just any old ring.

  8. Not only does the chainring have taller teeth it also sports teeth that are clocked to the chain. thick, thin, thick, thin (wide, narrow, wide, narrow?). the taller teeth and the integrated profiling keep the lateral slop and drop to a minimum. The real trick is the Diabetes Style rear derailllleuuurrrrr. anyone who has Shimano Clutch or Sram Diabetic rear deraillleuuurrrs is already addicted to the locked on chain but prob. is tired already of their sore left thumb. hauling that chain up 10 teeth is a bit of a chore.

  9. @chris. I just through calipers on mine and cogs are thicker than my old 9 speed cogs.

    The rollers are the same width as the Sram 10 speed chains. Our Sram rep told me that the chain life is going to be long in spite of it being thinner because there is no front shifting, which wears chains faster. He could explain how though.

  10. As soon as you remove your front derail from any system, the whole system will be healthier / longer life. So the rep is selling ya’ll as he should.

  11. epic29er

    I believe the chainring/spider combos will be made available aftermarket eventually. it’d be nice to run them on either existing cranks or aluminum ones for enduro bikes that aren’t ridden by doctors :]

  12. No front shifting allows the chain to last longer, 1X will provide all the gearing range a [que macho] person would ever need, replacement cassettes and that sole front chainring won’t cost that much…
    Kool Aid, Kool Aid, tastes great…

  13. I have installed it on my Santa Cruz Tallboy.
    And have now done around 1000km on it.
    The main problem I can see is the terrible chainline when in the 42 tooth
    they really screwed up the position of the front ring.
    I am going to space it in 5 or 6 mm with some Ti spacers to get a better chainline.
    I also think they need more cassette size options.
    I am running it with the stock 32 ring and will never need the 10 tooth.
    who races on a 90+ gear inch. crazy.

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