Coming in at 754 grams (GXP w/ BB),The XX Crank delivers amazing performance and durability with no penalties in weight.The first MTB crank specifically designed for 2x10 uses some ofThe world's most advanced material science.The oversized chainrings are CNC machined 7075 Aluminum blanks-2mmThickerThanThe competition. Unparalleled stiffness is delivered by an increased Bolt Circle Diameter (BCD) and aTwo-piece insert-molded carbon composite construction.The XX Crank geometry provides a narrow Q
Strengths: ~ Light cranks
~ Shifting is instant and smooth
~ Thicker chainrings than standard
~ Multiple shift ramps, for being easy on chains
~ Pedal spindle insert is actually machined crank end - slides inside carbon arms
~ Killer race graphics
~ Two chainline options to choose from
Weaknesses: ~ Pricey
~ Does not include bottom bracket(GXP/BB30/PF30/BB95)
~ Spider is not removeable, for increased chainring options, like X0
I was initially reluctant to buy a carbon-armed crankset, after years of being spoiled with Cannondale's super-stiff, beefy, Hollowgram Si SL BB30 cranks. The common failure point of many carbon cranks is the pedal spindle interface, which often becomes unbonded with heavy, high-torque(standing pedaling) use. SRAM remedied this quirky mating of dissimilar materials, by wrapping a machined alloy crank end with high-modulus, unidirectional carbon. The crank arms also has a light foam inner core, which further drops the weight.
Shifting is instant and smooth. The thick, 3mm rings has zero flex under most conditions. The 2x10 is ideal for fast, singletrack XC and Trail use. Mash the cranks and you feel the lurch of acceleration. Your cranking effort goes directly to forward motion. For those who wish for lower gearing - you will need to go SRAM X0, for the option of a removeable spider and smaller OEM rings, to nail the steepest of climbs.
Be aware this race crank does not come with a BB. I suggest you buy the Race Face crank end protectors, to mitigate pedal strike damage on the trail. If you don't have that perfect, feet-straight-forward pedal stroke - get clear plastic crankarm skins too.
I was thinking about going with the x9 but I'm glad I went xx. I'm 230 lbs and I've noticed no flex at all while pedaling. I thought that carbon fiber would be a bit flexy, but I was happily surprised.It's always nice to have a component on your bike that you don't need to think about while riding. This crankset has been trouble free for months and I don't anticipate any problems at this point. I have the 170mm crank arms so I don't worry much about pedal strikes but I did install Race Face crank boots on them to be safe. I just ordered some crank skins as well. I consider this a good investment since it will maintain most of it's value if I ever want to upgrade or sell. I'm using this with an XO front derailleur and SRAM x9 type 2 rear derailleur and it's smooth as butter!
Found this crank online for $350 and swiped it up for my RIP9! After 14 months of use it has performed flawlessly minus a couple bent teeth, but that's due to a lack of a bash-guard and rider error. This is probably the stiffest that I have ever ridden (lol that's what she said)! If I could find the same price I would probably buy it again, but I would have a hard time pulling the trigger if I had to pay $500+ to be honest. For the price I got, 5 chilis!
a Cross Country Rider
from Mobile, AL
Date Reviewed: January 31, 2012
Strengths: Super Stiff
Weaknesses: The replacement chain rings are a bit pricey
Scratches up easily
I'm 270lbs so I can usually make anything bend. I was riding the Sram x9 crank (39-26) and I had no problems, but when I upgraded to XX (39-26) I noticed how much more stiff it was. I had the 156 gxp version. The 156 was nice for me as I could use 20mm pedal extenders and get a good cleat placement, while before I had to use washers. (and yes I had a BG fit) Shop around for prices as they can vary a good bit, but if you think you can handle a 39T chainring and want something that is not only strong, but is also light weight then you won't be disappointed. The replacement big ring will cost you about $70 when the time comes.
GXP BB interface only
Expensive to replace chainrings
X-Glide chainrings (and cassette) is a league ahead of anything else out there. If you want truly improved shifting performance, save your money on extra composite, Ti bits, and extra machining on your FD/RD, shifters, and crank arms and go for the new XG cassette and XX chainrings. Shifting under pressure is MUCH improved over '11 XO (PowerGlide 2 cassette and non-X-Glide chainring) and DynaSys stuff.
Also, as far as I know, this is the only crank that offers a narrower Q-factor for dialing in fit (distance between crank arms). It won't fit every bike, do to chainstay clearance, but if you have narrow hips, you will feel better with this.
Sells for less than new XO cranks in most cases too, though those have X-glide chainrings too. I'll take the XX prestige and lower price over a flat black look with white and blue/red/whatever logo.
Similar Products Used: FSA Afterburner 386 (2x10), Truvativ Noir, Shimano XTR, XT, SLX, RaceFace Atlas and many lower end cranks
Bike Setup: Motobecane Fly Team29 Ti XO 20spd
a Cross Country Rider
from Tustin, CA USA
Date Reviewed: January 31, 2011
Strengths: Flawless shifting, excellent gear ratios, brings feet closer to frame, no flex
Weaknesses: None yet
Took me a couple of rides to get used to the gearing, but once I did was riding faster than ever. I am running the 2x10 26 x 39 crankset and 11/36 cassette (a lot of big climbs around here). As many usable gear combos as a triple crankset, with much better shifting. Less chain deflection means more power to the rear wheel. Very smooth pedaling and I like having my feet closer to the frame. Best drivetrain I've ever used.
Strengths: lack of crossover gears, faultless shifts, front and rear, lack of maintenance
Weaknesses: bit close clearance on my ibis mojo
Ignore all the Q's about lack of granny gear (I have old old runners knees) and it is a minimal difference. It works superbly with virtually no maintenance. The lack of crossover gear ratios ensure less triple+ shifts, the only negative is on the mojo sl, 2010 set up I have it is mighty close between the outer chainring and the chainstay, there is no flex though and so far no issues. It aint cheap but you get what you pay for - faultless in all riding from 8 hour enduro's to all mountain climb/ descent, dust, heat, sun, mud, rain....
a Cross Country Rider
from Santee, CA USA
Date Reviewed: June 30, 2010
Strengths: Very Light, First time pedaling you can feel the weight difference, Shifts to the big sprocket under load, looks great. Love it, climbs very well. shift is very positive. Running XX shifters, front and rear derailleur, they work great!
Weaknesses: Using the 26/39, could use a little more gear on top. Wish you could do the 26/42 combo but I guess the can not be interchanged
Greatest thing that has come along in while in Mountain biking! Do not miss the other gears at all, even with the 39 chain ring I'm still running consistently faster than XTR on my 26 in Bike
Strengths: Excellent gearing, smooth fast shifting, quiet operation, FAST!
Weaknesses: This can be too tall gearing for the average recreational rider. Best suited if you are fit and wants to go fast and race
This crankset is truly nice. It feels like you are in the right gear all the time. I have the GXP crankset and it is only a few grams lighter than the my current XTR M970 cranks which I modified to a 2x9. However, with the slightly taller but harder gearing, you tend to go a little faster lap times.
Similar Products Used: XTR M970 converted to Bash/32/24
Bike Setup: Merlin XLM
from Norwich, CT, USA
Date Reviewed: June 17, 2010
Strengths: The crankset seems to work amazingly smooth. It is lightweight and strong.
Weaknesses: The bolt attaching the crankset side to the bottom bracket comes loose after each hard ride in the woods. If I torque it too much, it then loads the bottom bracket's bearings and loses spinnability.
I love the my XX drivetrain, but I do not understand why my crankset keeps coming loose from the bottom bracket. If anything, riding should tighten the crankset. As far as performance, there are no complaints, but I need to get to the bottom of why the crankset comes loose so frequently.
a Cross Country Rider
from San Antonio, TX
Date Reviewed: May 12, 2010
Strengths: Smooth and exact
Weaknesses: Top gear isn't as big (fast) as my old 3X9 setup. Bottom gear isn't as small as small (easy) as my old 3X9 setup.
I'm an adventure racer, so most of my riding is on fire roads, dirt roads, and paved roads, with some singletrack thrown in. The XX drivetrain replaced my old XT drivetrain. The XX shifts smoothly, quickly, and precisely. My only complaint is that the biggest gear isn't as big as my old XT setup. Thus, going downhill on paved roads results in a lower top speed. Likewise, the smallest gear isn't as small... but I haven't had a problem finding a suitable gear for climbing really steep stuff, though. Changing to XX dropped my bike to 24.1 pounds (from 25.2 - medium frame).
Similar Products Used: XTR, XT and SRAM XO. SRAM is just so reliable and just simpley bullet proof.
Bike Setup: Yeti ASR Full XX with Mavic SLR wheels.
from New Castle, In, USA
Date Reviewed: April 2, 2010
Strengths: This product is light and has good ratios. Perfect for my favorite hilly trails.
Weaknesses: None ... You get what you are paying for with this xx line.
You won't be able to blame your bike if you lose.
No drawbacks to this crank and the rest of the set. I love having a little extra clearance. Some of the logs that I go over don't catch the crank like they did with the triple. Weith loss is an added bonus. This product line is geared for racers and enthusiasts, but I love it and I'm just an average rider.
Strengths: Stiff, light, shifts fast, 2 front gears!, perfect ratios with options, works well with shimano shifters and derailluers, looks good
Weaknesses: Heavier than the serious weight weenie options, but that is due to the heavy (6mm thick) chainrings, but this is to improve shift quality, If someone makes light chainrings for this (propietary) BCD, they will be really light.
You need deep pockets. Really deep pockets.
I didn't pay full price, (~430?) So I got a screaming deal. I'm running these with shimano dual control brakes/shifters, xtr derailluer, in a 2x9 setup.
These are perfect in every way. Perfect gear ratios, strong, light.
Can someone give me some advise. I'm looking to replace my jockey wheels on my SRAM XX deraileur. I'm just wondering can I replace with an X0 or X9 Jockey wheels instead..I'm guessing as long as it's 11 tooth it should be fine. Just rather not spend £120 on a set of official XX Jockey wheels.
Any a ... Read More »
So, I've adjusted the bike, buddy adjusted the bike, and the bike has stumped 3 mechanics at the shop so far (on two visits). So really, that's five people.
The story: The bike is a 29" titanium hardtail fitted with sram xx 2x10 (11-36). It probably has 400-500 miles on it. It shifts flawlessly ... Read More »
I have a first year XX Rear D that recently has the lower swingarm weak which now gives me all kinds of chain slap and the chain falls off alot now.
I've taken it apart and either that enclosed spring has gotten weak or the inside tab is coming out of it hole and popping into an lower tension hol ... Read More »
Currently my xx brakes make noise on my Remedy 9.9. I want to try to change out the rotor. What high end rotor do you recommend while considering weight and the fact I ride these on technical single track (I will use 180 front and back).
Thanks for any help.Read More »
[COLOR=#444444][FONT=sans-serif]Managed to find a good deal on a set of 2012 120mm dual air SID XX's but really, 100mm is the sweet spot for my frame - does anyone know if its possible to change the travel on these?
I know that you could add/remove spacers on the older Rockshox and am pretty sure th ... Read More »