Voted "Best New Product" - SRAM XX, the world’s first 2x10 MTB groupset, was selected "Best New Product" by CyclingNews Reader Poll
2 X 10 - The most obvious change with XX is the move to a road-style compact double crankset. That's 2 chainrings in the front with 10 cogs in the back, hence the name "2X10". The advantages are much crisper, more precise shifting, lighter weight, and more useable gear combinations without cross-chaining. Plus, the Q-Factor (distance your feet sit apart) is nicely reduced too. The absence of a middle chainring not only simplifies the front end but allows Sram to double the number of ramps and pins on the chainrings so front shifting is vastly improved.
Carbon crankset in both BB30 and external bearing options. Bottom bracket bearings are ceramic in both configurations. Available in 170 and 175 lengths. 694 grams in BB30 and 754 grams with GXP bottom bracket.
Chainrings available in 45x30, 42x28, and 39x26 to accommodate a wide variety of terrain and riding styles.
The cassette is machined form a single piece of steel and laced with dozens of cutouts to shed mud and drop weight. The largest cog is aluminum and lightly press-fit for easy replacement. The 11t cog is steel and also easily replaced. Cassettes are available in 11-32 plus an 11-36 for extremely hilly terrain.
Rear derailleur features carbon cage plates, titanium spring, and ceramic pulley bearings. 181 grams
Front derailleur available with 31.8mm, 34.9mm, and 38.1mm clamp sizes and in high mount, low mount, or direct mount. 118 grams
The new trigger shifters feature the maximum amount of adjustability for precise hand positioning - inside or outside the brake levers plus reach adjustment. Included is a hydraulic lockout lever to use in combination with Rock Shox Reba, Revelation, or SID suspension forks. The system is so convenient that Sram expects most riders will change their suspension habits completely: instead of locking out the fork when you don't want it to move, the fork's normal state will be locked out and you click the valve to unlock suspension only when the going gets rough. Carbon body cover with carbon and composite blades, stainless mounts. 183 grams per pair.
The XX hydraulic disc brakes improve on Sram's already highly regarded Elixir brakes by reducing weight (330 grams) and modifying the brake lever pivot for a more direct and solid feel. Includes carbon brake lever blades, forged magnesium lever body, 2-piece calipers, and titanium mounting bolts. Lever reach and pad contact are both adjustable. Available with 160 and 185mm rotors plus 140mm rear. 288 grams with 160mm rotor.