Lengths: 170mm, 175mm
Chainrings: 26x39, 28x42
Weight: 754 g.
Bottom Bracket Sold Separately
Coming in at 754 grams, the Sram XX Carbon crankset 166Q delivers amazing performance and durability with no penalties in weight. 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 crank geometry provides a narrow 166mm Q factor, an efficient chainline, and beveled crank arms to maximize clearance.
Patented X-Glide chainring technology delivers accurate, lightning-fast shifts. The development concept for X-Glide 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. With X-Glide, all four up-shift locations are identical and can be picked up by any outer link. The result? Up and downshift locations have perfect timing, providing an almost instant shift - even under load!
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