SRAM XX1 Quarq Power Meter Cranks

Aug 27, 2014
by SRAM  
SRAM Powermeter PR Images

SRAM XX1 Power Meter:
• Carbon arms – 170 and 175mm
• 156 and 168mm Q-factors
• 104 BCD – 32, 34, 36, and 38-tooth chain rings sold separately
• GXP and BB30
• Multipoint, active temperature compensation
• Accelerometer cadence

• Built hand-in-hand with the XX1 drivetrain – highest performance, integrated look
• Designed for X-SYNC™ and compatible with XX1, X01 and X1
• Light weight, LED indicator and replaceable CR2032 battery
• Each power meter is individually calibrated at the factory to eliminate temperature effects on power measurement
• Accelerometer for cadence – no need to install a magnet
• IPX7 waterproof rating (1 meter of submersion for 30 minutes)
• All SRAM MTB Q-factors, crank lengths and bottom brackets

SRAM Powermeter PR Images

The 1X™ drivetrain that launched an XC World Championship, SRAM XX1 was built to be simpler, lighter and more durable than any other. Calibrated to work together, SRAM XX1 components deliver remarkable chain control and rapid, high-precision shifting. Which gives serious riders exactly the edge they need. UNSTOPPABLE.

SRAM X-SYNC™ 1X™ chain rings provide the highest level of performance and durability. The SRAM X-SYNC™ tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC™ chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC™ rings are an integral part of the SRAM 1X™ drivetrain. Accept no imitation.

SRAM Powermeter PR Images

When SRAM’s engineers first turned their attention to X-SYNC™, they began by examining the multi-speed, single-ring systems that were already on the market. From inside and outside derailment to mud-clogged gear recesses, the rings presented clear opportunities for improvement. So the engineers started to design—and redesign. Each iteration of the new chain ring went to the field for trial runs. And from all of this came X-SYNC™, MTB’s first wide tooth, narrow tooth chain ring.

But wide tooth, narrow tooth alone didn’t cut it. The SRAM team plowed ahead with a single goal in mind: to create a ring that contributed to the SRAM 1X™ drivetrain built around simplicity and durability. Every detail was scrutinized, leading to optimized square tooth geometry. To asymmetric tooth-tip offset. To sharp-tipped teeth that catch the chain at extreme offsets. Chamfers and radii designed for optimized guiding. Enhancements engineered to limit roller movement. And mud recesses that keep the chain clean and moving. All focused on the dynamic bike platform for XC, Trail, Enduro, and Gravity riding. And all part of an integrated SRAM 1X™ system precision-designed so that every aspect of X-SYNC™ works perfectly with the rest of the drivetrain.
The original wide tooth, narrow tooth chain ring is the optimized ring for riders who never compromise. X-SYNC™—ONLY BY SRAM.

XC riders use it to dial in their training, objectively assess race results and fine-tune their diet.

Marathon racers use it to pace themselves and monitor energy loss.

Enduro and downhill racers use it to see how often they pedal and how hard, analyze power and cadence vs. gear selection and seated vs. standing pedaling, and monitor fatigue.

SRAM Powermeter PR Images


  • 13 2
 On a mountain bike a power meter is not as useful for training unless your on a steady climb. I have one on my road bike only ride it for interval workouts. once you use it enough it serves to let you know how you are performing for the day on the MTB because you know the wattage you push when you're "on.". It helps everyone and increased my race performance substantially in half marathons. Your heart rate is so susceptible to so many variables but watt output is watt output whether your at elevation, sick, dehydrated etc. When a racer (XC or DH) wins a race but during the interview claims he didn't feel at his best that means some other variable made him/her feel out of it but the watt output was the same as a day he or she felt awesome. I suck at explaining it but I hope it helps you all asking.
  • 1 1
 Steady climb or flat without a million hiccups. Meter isn't perfect and won't average the output that great
  • 3 0
 I think that many athletes who train and ride with the powermeter agree that it is a terrific training tool. I don't think that SRAM is suggesting this for DH bikes, they are suggesting it for Enduro or XC racers or all around fun riders who want to know their outputs when climbing or sprinting or whenever. With the averaged output you can tell if you are increasing your power output capability overall as you train which helps a lot. Also, with Strava or other programs you can scope out your outputs on different segments which is cool. It might be cool in the other direction too, see if you can reduce your power output while maintaining the same time on a downhill segment, means you are riding smoother and dialing in the trail?

I agree that it is easier to use on a road bike since you can look at your output regularly more safely, but I think for those worried about performance on the MTB, this is a great tool for monitoring your improvement.
  • 1 0
 I'd love to have a power meter on my road bike and mtb so i can look at my PR efforts or generally how I am doing which is impossible to tell by 'feeling' since you can feel off and still totally smash it. Sadly I ain't got dat kinda money.

Also, can a power meter tell u if you are fatigued or not?
  • 1 0
 You gotta buy a used one. I bought mine for $500 on ebay and it was a wired Power Tap Hub. It still works great to this day so until I have $1500 fall into my lap I will be using my wired setup. I would really like to have a crank set eventually. Yeah, the stuff is expensive but the benefits are worth it.
  • 12 2
 I snapped my Saint flats and aluminium threaded inserts right out of the carbon arms twice in one month on my XX1 cranks. Nearly killed me both times. Don't ride XX1 cranks and a hardtail while doing jumps, they will try too kill you. Regarding the powermeter, I prefer my wank-o-meter. Tells me when to wank and when not to, really smart when standing in line in the local supermarket.
  • 14 7
XC riders use it to dial in their training, objectively assess race results and fine-tune their diet.

That's a joke right?
  • 20 3
 No Joke, these cranks will start kicking back when you pedal home from the grocery store with too much unhealthy treats in your bags...
  • 19 0
 In all seriousness, no. Pretty standard in the road peloton to track your power output, figure calories burned and eat accordingly. I'd assume some pro XC racers do the same.
  • 4 2
  • 11 0
 You laugh but don't think for a second that all the top WC DH racers don't use power meters because I would bet money they do. In fact this is the same crank that Jerome Clementz won the Enduro Worlds Series on last year. Tools of the pros for sure!!!
  • 2 1
 Stages cycling makes a non drive side crank arm with an integrated power meter for just about everything! Saint M820 for DH racing, Shimano DXR for BMXers, and SRAM X9 for XC and AM riders...they're pretty cheap as far as power meters go, too!
  • 4 1
 Doesn't Graves use one too. I'll bet he puts out more watts than an ebike from all those quick snapping days in 4X. Would be interested to know what he uses it for and how much power he uses at various stages.
  • 3 0
 You have to figure a TDF contender puts out anywhere between 400-450 watts on a climb while the sprinters at the end of a flat stage easily put out 1000+ (i dont remember exact numbers for the sprint), so Jared Graves and BMXers alike are churning big numbers in those short explosive races. It is interesting to look at the data and you can find it on the internet.
  • 2 0
 5-6 watts per kilogram for top dog climbers is a good rule of thumb. Word has it Kittel can do 3 second efforts at 1800 watts... some track riders can do over 2000 watts!
  • 2 0
 I read once that Rennie used to put out 1800 watts. Do they graph this stuff and compare to elevation readings?
  • 5 1
 i wanna soak it underwater while I fish for the weekend and use it as a clam finder.
  • 1 0
 I found a use for these things finally, useless for average power because you can't power down while you're snagging pedals... but after using TrainingPeaks for road I'd like to see my peak power numbers. With the wide bars and stiff frame of my commencal I'd imagine a higher 5s power output than I could achieve on my road bike. I don't take mtb seriously but if somebody was serious and was curious about this that should hopefully help.
  • 5 1
 I wonder if the 30t Race Face NW ring fits Smile
  • 2 0
 Yes, It has a 104 BCD, and so do the NW rings.
  • 3 2
 Oh dammit, why do I always reply at the bottom instead of to the comment I want to reply to
  • 1 1
 They should just make that the regular XX1 crank. It looks WAY cooler and it fits whatever ring you want!
  • 1 0
 Do these look like sram's road cranks or is that just me?
  • 1 2
 I'm confused, seriously WHAT DOES IT DO!!
  • 1 3
 Fuck all those sensors and meter shit!! Just ride!!!
  • 2 5
 £1199 rofl seriously?
  • 2 5
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