Truvativ XX 10-Speed Crankset

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MSRP : $430.00


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Product Description

For all the talk of the XX Cassette, the XX Crankset is really where they're changing the gearing paradigm. Double chain ring cranks have made consistent if periodic appearances in the MTB world for years. The reasons for their appearance have always been the same -- lighter weight, better Q-factor, better chain line, faster shifting, and no chain suck. Ritchey was the last to push 2x9 gearing starting back in 1997, and that was an era of seven and eight-speed cassettes. With nine-speed making its way into mountain bikes, 2x9 made sense for places without steep terrain.XX isn't Tom's 2x9. For one, with XX you still get the super-wide range you'd otherwise get with 3x9. For another, unlike Ritchey, they're designing the entire system rather than making a few pieces, then hacking designs for the rest.XX cranks are optimized for the 2x10 system. The only given was using two rings and a through-axle spindle. They went to the drawing board to re-imagine the rest. Looking at it, you know the crank is different -- different in a more profound way than even XTR. Both chain rings are affixed on the inside of the crankarm. This helps keep the q-factor down as well as keeping the chainline narrow, at 49.5mm. The outer ring as a 120mm bolt circle diameter while the inner has a 80mm bcd. These numbers seem odd, except that the outer was designed to work with 39, 42, and 45 tooth chain rings. The inner was designed to work with 26, 28, and 30 tooth chain rings. The exclusivity is a problem if you're trying to match the crank with any other shifting, but it's a benefit if you want XX. The benefit is that with less metal reaching from the chain ring teeth to the spider, there will be less flex, and faster response when pedaling. They also made the support area of the chain rings wider, out to 6mm, wider than other chain rings on the market. More meat means greater stiffness. And with 7075-T6 aluminum as the material, they're also pretty damn light. Not only did they design their own optimized bolt circle diameters, but they re-engineered the shift ramps, pins, and cut outs on the outer chain ring. On most chain rings these days, there are two sets of ramps and two drop points where the chain can get lifted or dropped quickly and under pressure. This means that twice each pedal revolution you'll hit these spots, so the shifting can be iffy if you shift at any other time. You've probably experienced this with the pause and clunk on some shifts and the smooth movement on others. SRAM's XX outer ring allows perfect shifts just about all the way around the crank. They call this X-Glide. Another improvement stems from having only two rings. From the small ring, the chain can only go up, from the big ring, only down This made designing the rings so they worked perfectly with each other easier than having to think about how the chain goes up from the small to middle ring and down from the big to middle ring. SRAM also worked the crank to make the Q-factor a lo

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Sram XX cassette + WTC 40T sram ring + 1-Up Components Rad Cage + 2 x 10

I am going to try this. Where I ride and my my 235 geared up clyde body necessitate a 2x up front. I do not want to part with my gloriously light XX rear cassette for an XTR. Been thinking about this a lot so I figured I would bite the bullet and see how it performs. I tried a search and haven't ... Read More »

29rs and budget XX-10?

I and to go 1x10 but I need a wide range cassette to do it. I am really interested in this.[url=http://www.bikerumor.com/2013/11/28/exclusive-take-your-cassette-to-the-next-level-with-oneup-components-42t-sprocket/]Exclusive: Take Your 11-36 Cassette to the Next Level with OneUp Components? 42t Spro ... Read More »

1 x 10 with SRAM XX cranks??

I have an opportunity to get a really good deal on a set of XX cranks, but will only do so if I can use as 1 x 10 with at least a top guide and preferably a bottom pulley aswell. In looking at these cranks it does not seem possible. If I were to put, say, a 34 tooth 80BCD ring on, it looks like th ... Read More »

XX / X0 Trigger adjustment? 10-spd

Is the trigger adjustment worth the upgrade to XX or X0 from X9? In general, i like the change to Triggers from grip shift ergonomics. The levers do seem kind of spread out to far though. Is there enough adjustment in the top level shifters to dial it in for a better feel? GRead More »

XX shifters with 22/34 or 24/36 2 x 10

Anyone using XX 2x10 shifters with a non 2x specific crankset? How does it work? Which front der are you using. I am using X9 3x10 shifters now but could see the advantage of adjustable levers ox xx and xoRead More »

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