Less is really more: why 2X10 just works
The benefits SRAM 2X10 delivers—a full range of usable gears, less weight, and easier and smoother shifting in all terrains—are becoming understood by riders of all levels, not just cross country pros. To fully appreciate how SRAM 2X10 can help you make the most of your ride, we wanted to provide a comprehensive resource for all the facts, figures, and opinions about 2X10, the role of Truvativ's X-Glide technology, Exact Actuation and all the benefits of a 2X10 drivetrain for every kind of riding.
难得有幸发帖，就把毒物放多点，光XO的就来7套，让大家养养眼，以前拆过Xo的指拨，里面的轴承内的弹珠小的可以，精细程度不言而喻。下面引用官网的介绍：
From Extreme Freeriding to the rigors of World Cup XC, the X.0 system performs with distinction. Our superior 1:1 actuation ratio paired with a NEW super-tough carbon and aluminum cage design results in durability and performance.
从极限骑行FR到世界杯xc比赛的严酷赛场，X.O变速系统的表现都相当出色。SRAM公司传统的1:1拉线比搭配新型超硬碳纤维和铝合金框架设计，提升了X.O变速系统的耐久性和性能。
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The X.9 line-up features the same robust qualities and technologies as the X.0 system. If you are looking for greatness in a refined high-performance package then look no further, choose X.9!
整套X.9变速系统继承了X.O变速系统工艺和质量的整体特性。如果你正在寻找一套精致高质量的变速套件，别再犹豫了，选择X.9。
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X.7 promises performance and durability with the distinctive SRAM shifting prowess.
X.7变速系统以SRAM变速的实力承诺其性能和耐久性。
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SRAM X.5 A pure simplified performer from the trails to the street.
X.5变速系统简单适用于街道和平路。
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SRAM X.4 ALL NEW! The X.4 line-up sets the standard for recreational level shifting.An intelligent blend of performance and value for MTB or pavement.
X4变速系统适用于消遣级别。是一种对于山地与平路的绝佳混合。
See Red. When the pursuit of victory becomes so focused and singleminded that nothing else matters. Inspired by the search for competition-vanquishing advantages, SRAM has created a world where high-performance race-ready componentry is taken one step beyond. SRAM Red is a living lab focused on the design, development, and improvement of already revolutionary technology.
Red套件。当追求胜利的想法变得集中和渴望，那么其他就别无所求了。受搜寻竞争-征服优势的启发，SRAM公司创造了一个帝国，在这个帝国里高性能的竞赛级零件有了一定的跨越。SRAM RED是一个集设计，发展和改进现有革命性技术的实验室。
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For 2010, the new SRAM Force admittedly borrows from SRAM’s professional Red components: unidirectional carbon,wider skeletonized Dual Pivot design brakes and the lighter /stiffer BB30 crankset option - All this for a total weight of 1951g.SRAM Force has matured through millions of kilometers of professional racing and now offers many more features for the same price.
对于2010款新的Force公路套件来说，借鉴了专业级Red零件的一些技术：单向碳纤维，更宽的框架双枢轴刹车设计，可选更轻更硬的BB30中轴系统(这个系统是cannondalei和fsaa搞出来的东西，以后有空再介绍一下中轴系统)。这些设计使其总重量降到了1951克。Force变速系统在数以万计的比赛历程中变得成熟，变得更具性价比。
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SRAM rival The polished black anodized finish sets SRAM Rival apart, but that’s only the beginning. SRAM Rival features sleek carbon brake levers, Zero Loss front shifting, multiple cable routing options, and reach adjust for both the shift and brake levers.
黑色抛光的阳极电镀完成的Rival零件，这仅仅是开始。Rival变速系统包括了碳纤维刹把，零损失手变，多路线选择，能控制调整变速和刹车。
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SRAM APEX New SRAM? Apex is the perfect blend of technology and performance, so all riders can challenge their personal limits. SRAM? Apex has double chainrings, which are simpler, lighter, faster, and in every way, just better than a triple. And with a gear range that’s wider, making climbing easier and descending faster, why would you ever go back to three?
新款SRAM Apex变速系统是技术与性能完美结合的产物，使所有骑手可以挑战自己的个人极限。Apex有两个盘片，这样的设计比三个盘片的更简洁，更轻，更快。有了更宽广的变速范围，使得链条上下牙盘更快更轻松，那你为什么还要回到过去的3片牙盘呢？
这里再补充一句，Apex变速配的是11到32齿的飞轮，一般配这样的山地飞比较适合初骑公路的人，如果觉得自己爬坡能力不强，入门公路时可选择山地飞或者三片式牙盘。
