Since downhill bikes, especially in racing, are such specialized machines, it’s no surprise that SRAM is now offering a downhill-specific group of components in its race-worthy XO line.
Included is the first carbon-fiber downhill crankset, a chainguide and a downhill-specific rear derailleur, designed for the close-ratio cassettes used in DH and 4-cross.
Prices are equal to those of the standard XO components.
The rear derailleur can accommodate up a 28-tooth cog on the cassette, and is also available in the new silver XO finish. It will also work with any of SRAM’s 2X10 shifters.
The crankset weighs in at less than 800 grams, including the bottom bracket, and has been thoroughly tested by World Cup downhill racers. Chainrings are avialable with 34, 36 or 38 teeth and arms are available in 165mm and 170mm. Bottom brackets can fit any of the current standards and it’s also available in the silver finish.
Chainguides have a replacable skid plate, sealed bearing pulleys, single-bolt positioning, two sizes for 32-36 teeth or 36-40 teeth and several mounting options. Available in black or white.