SRAM XX Mountain Group
SRAM XX Groupset the first 10 speed mountain group on the market and we have to believe others will follow.
XX was a global effort. Working across ten locations in six countries with an amazing team of engineers and designers, we collaborated to build the new standard of lightweight MTB performance. Driven and tested by our global teams of athletes, XX became a reality.
XX was an idea whose time was right: our first MTB group. We didn’t just want to be better—we wanted to be beyond comparison. Revolutionary front shifting, unmatched ergonomics, and unequalled hydraulic remote suspension lock-out, all in the first-ever 2x10 MTB package. But don’t take our word for it. Hear what our elite test athletes and tech support has to say.
Coming in at 694 grams (BB30), the XX Crank delivers amazing performance and durability with no penalties in weight. The first MTB crank specifically designed for 2x10 uses some of the world’s most advanced material science. The oversized chainrings are CNC machined 7075 Aluminum blanks—2mm thicker than the competition. Unparalleled stiffness is delivered by an increased Bolt Circle Diameter (BCD) and a two-piece insert-molded carbon composite construction. The XX Crank geometry provides a narrow 156mm Q factor, efficient chainline, and beveled crank arms to maximize clearance. It’s pure science in action.
Our way of thinking. The concept was simple: create a geometry that allows each chainring to be divided into equal segments, much like a pie. Then, perfect the up-and downshift timing for one segment, and repeat that for each of them. However, making this idea an engineering reality was quite another thing. Prototype after prototype was built, ridden, and analyzed until we got it right. The outcome is lightning-fast and accurate front shifting, through an all-new, patented, mind-blowing performance technology: X-Glide.
X-Glide is the common denominator that gives XX its unmatched shifting performance. With X-Glide, all four upshift locations are identical and can be picked up by any outer link. The result? Up and down shift locations have perfect timing, for an almost instant shift—even under load!
• Weight: 694g (BB30), 754g (GXP w/ BB)
• Chainline: 49.5
• Chainring Material: AL-7075-T651
• Chainring Colour: Tungsten gray and silver
• Chainring Bolts: AL-7075-T6
• Crank-Arm Materials: Integrated carbon composite/aluminium spider construction
• Compatibility Chain: Optimized for SRAM PC 1090 or PC 1090R
• Crank-Arm Length Options: 170mm and 175mm
• Chainring Options: 26-39 (120/80 BCD), 28-42 (120/80 BCD), 30-45 (120/80 BCD)
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