SRAM XX World Cup brakes areThe best ofThe very best.To be a part ofThe XX family, it’s necessaryTo be light, reliable, and durable. In orderToTrimThe XX World Cup’s weightTo 277grams,The levers are constructed of carbon fiber, andTheTwo piece caliper is constructed of forged magnesium.Trimming weight shouldn’t come atThe expense of features.The XX world Cup featuresTop loading pads. WithTop loading pads, new disc- brake pads can be installed withoutTaking offThe wheel,To
Weaknesses: Constantly have to bleed them. Lever keeps "sicking" and have tried everything. I figured if I bought the most expensive brakes from the Avid line, they would be perfect. I have rode them 4 times, but they have been bled 3 times already and still don't work correctly. rotors drag, even brand new ones, so I guess it's time to get a piston kit..WOW.
Bottom Line:
Would never purchase again, and probably never purchase Avid either. Having problems with Elixir's on my other bike.
Weaknesses: sometimes lever goes to bar without stopping . usually on a sketch downhill . bled using avids u tube video , better for a few days then back to intermittant brake failure . avid / sram / rock shox has very bad quality control .
Bottom Line:
do not buy these brakes choose another brand (xtr , formula , magura) I wish i had . nothing like getting burned by worthless peice of junk bike parts that are advertised as the high end by avid and cost $$$$$.
Strengths: Lightweight, slick looking, nice feel\touch when feathering, good power with a 140MM rotor
Weaknesses: The factory pads shipped with this brake only lasted 1 6-hr race and a couple of training rides before the race before they were gone. After one minor laydown of the bike at low sliding spped where there was not a scratch on the bike, the brakes just stopped working for about the next 4 miles of riding. I had to keep pumping the lever and finally they started working again. Recently, the lever is now sticking after being pulled in, it springs back out but only after a delay due to the sticking. Price.
Bottom Line:
These brakes are light and look good but for the price the performance is just not reliable enough. I should not have problems after just a couple months of light duty usage. They must have comprimised to much weight for performance reliability. Stick with the heavier Avids for much less money.
Bike Setup: Large Titus Racer X with the full XX group, Stans Alpine Wheelset, CrankBros Cobalt 11 pedals and post, Fizik Tundra 00 saddle, RaceFace carbon 3/4 riser bars, Continental RaceKing Supersonics. Around 21-22 lbs.
Strengths: Very, very light. Good fit and finish. Nice looking.
Weaknesses: Will not hold a bleed. At all. These brakes work good when they are working. Which is about one to two rides before another bleed will be needed.
Bottom Line:
I bought what I thought would be "the best" and paid the asking price for "the best". Unfortunately, I have had nothing but problems with these brakes.
I started riding on them in February 2011 with the 2010 full XX group. By the first week of June they had been bled 7 times. LBS called SRAM. They sent me the new (2012) World Cup model at no charge. These were installed. First two rides they were great. Solid. Then the first bleed was needed after flipping the bike over for about one minute for some trailside bike service. Then a second bleed. After the third bleed I put two rides on them noting a slight decrease in performance. I parked this bike for about 10 days (upright) and went to go for a ride and the levers went right to the bars. These brakes lost nearly their entire bleed over ten days with NO usage.
STAY AWAY from these brakes folks, unless you have a full time mechanic at home that works for free or you like the "excitement" of not knowing if your brakes are going to work the next time you grab them during your ride.
Weaknesses: Everything.
These came stock on a new Specialized S-Works 29er HT.
I rode them for one month and noticed some sticking in the lever so back they went to the LBS.This was right before winter struck and my LBS said bring them in and we will get them set up correctly.They've been there evr since.
No problem SRAM send new brakes.
LBS sets them up and the new ones are worse than the old ones.
SRAM then sends new brake lines saying this was the problem with XX brakes all along.
BS!!I go to LBS to find the left lever is still sticking and needs a new piston.ON BRAND NEW BRAKES THAT HAVE NEVER BEEN RIDDEN.
I asked the LBS to tell SRAM I wanted credit to buy some Formula R1s.And now this is hilarious.After all this the idiot at SRAM has the lack of brains to say,"why would he not want the best brakes on the market"!!What a dildo.
How about this,I want brakes that work and are reliable.
Is that asking so much?
Never buy these brakes.They have to be the worst high end brakes on the market.
Do yourself a favor and go buy some Formula R1s and enjoy your riding.
I have never in 20 years of mtn biking this crappy of a product and this inept service.
Bottom Line:
Bike is STILL at shop awaiting another brake lever.
I now have ONE brake that works.
Maybe by Spring the morons at SRAM can get another one that works correctly.
