Bottom bracket standards seem to be a dime a dozen these days, so to stay on top of the game, SRAM stays current to reflect the sizes used in the industry with the GXP BB92 Bottom Bracket.
It might look normal from the outside, but the engineering inside this incredible chain design makes possible a gear range previously found only in 2-chainring drivetrains.
Whether for prized race machines or the build of their dreams, the XG-1299 cassette is the ultimate, giving riders unprecedented 520-percent range thanks to the new 10-52 tooth-span.