Shift Lever Set, 183
Rear Derailleur, 181
Front Derailleur Low Mount, 118
Front Derailleur High Mount, 120
Cassette 11-32, 185
Cassette 11-36, 208
Crankset 42/28 GXP, 754
Crankset 44/30 GXP, 779
Crankset 39/26 BB30, 670
Crankset 42/28 BB30, 694
Crankset 44/30 BB30, 734
Drivetrain Total, 1597
Grand Total 2210
Where does SRAM XX fit?
XX: The X-Dome cassette has a replaceable aluminum small cog.
Amazingly, almost every part, save the crank, can be installed and adjusted using a T25 Torx driver. The parts we rode and experienced were considered "Level 1 preproduction;" they were made on production tools and are 99.8 percent the same as what will be sent to bike manufacturers in July.
Ok, it’s two-by-ten: we’re over that hump. But it’s really smooth. If it were two-by-nine and this smooth, we’d be singing the same praises.
XX: Scott is an early adopter of XX.
XX: Truvativ's proprietary PressFit 30 bottom bracket.
The second spindle size is the 30mm diameter BB30, whose spindle is made from aluminum. For this option Truvativ also offers two bottom bracket types: standard BB30, which relies on a machined shell that accepts c-clips and press-fit bearings; and a new PressFit 30 design.
XX: The XX caliper offers access to the pads through the top.
The X-Dome cassette features conventional ramping and has none of the missing teeth of the road Open Glide cassette. The design is extremely quick shifting and quiet; in fact, even with our limited experience we’d say it’s quieter than SRAM’s road drivetrain.
XX: The XX caliper has a two-piece design that's forged from magnesium.
Brakes: Superlight Stoppers
Because of the new U-clamp mount, MatchMaker had to evolve to fit the new brake. The new multi-mount system is dubbed MatchMaker X, which offers a greater adjustment range than the original while retaining smart features like ambidextrous mounting for varied positions. The mount relies on a hinged design and one bolt.
XX: This XX Reba has 120mm of travel.
The XLoc relies on a new damper assembly, retrofitable to current BlackBox Motion Control forks, which replaces a crown or cable-actuated unit and works simply. You turn the fork on by depressing the pen-like push button on the remote, opening a gate valve in the damper.
XX: A view of the XX X-Dome cassette
My initial impression is that XX is as much, if not more, than you would expect from something developed with these resources. It’s pre-production stuff, yet shifting is incredibly smooth and everything works to what seems to be a professional level.
The surprises are the X-Glide chainring timing, the simple and effective XLoc lockout, the 36-tooth rear cog and the PressFit30 bottom bracket design.
The rest — including notable designs like the X-Dome and pleasantly narrow Q-Factor — were less of a surprise, but nonetheless greatly appreciated. We came away from SRAM’s XX launch with a strong desire to bring XX to the race course this summer, which may be the best way to test it. For more on SRAM and the path that led to XX,
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.All new Truvativ PressFit 30 debuts with XX. The XX philosophy comes to life again— everything you need, nothing you don’t. Light and strong. Our all-new PressFit 30 provides big weight savings,a narrower Q factor, and more ankle clearance in an easy-to-install, durable little black package. PressFit 30 features an integrated gutter seal underneath an aluminum-bearing shield to dramatically prolong ceramic bearing life.
SPINDLE MATERIAL: Alloy
SPINDLE DIAMETER: 30mm
BEARING SIZE: 42x30x7
BEARING FITTINGS: PressFit cups
BB SHELL REQUIREMENTS: 73mm wide x 46mm inner diameter
The low-profile XX Front Derailleur was designed from scratch specifically for 2x10. It’s a critical part of the XX shifting experience: the fastest front shift ever. Offered in a wide variety of clamp-mount and direct-mount options.
WEIGHT: 118g (Low Mount)
CAGE MATERIAL: Steel
CLAMP MATERIAL: Forged AL-6061-T6
HARDWARE: TORX® T25 bolts
SHIFTING POSITIONS: 2
CABLE ROUTING: Top or bottom pull
CHAINSTAY ANGLE: 66-69 degrees
COMPATIBILITY: 31.8mm, 34.9mm, and 38.1mm clamp sizes
OPTIONS: High Mount, Low Mount, Direct Mount
Leveraging the legendary history of SRAM shifting, the XX Rear Derailleur delivers incredible speed and precision. Sealed ceramic pulleys give you the highest levels of durability. The carbon fiber cage has a dedicated length specific to 2x10. Exact Actuation technology eliminates slop and shifting variation. It’s a rear derailleur perfected for ultimate off-road performance
SPEEDS: 10 speed for 2x10 system
TECHNOLOGY: Exact Actuation ratio, Direct Route Technology
INNER/OUTER CAGE MATERIAL: Carbon fiber composite
SPRING MATERIAL: Titanium
INNER LINK: Forged magnesium
OUTER LINK: Forged AL-6061-T6
B-KNUCKLE: Forged AL-7075-T6
P-KNUCKLE: Grilon® composite
BEARING PULLEYS: Sealed ceramic
HARDWARE: Titanium and AL-7075-T6; TORX® T25 bolts
CAGE LENGTH: 93mm
COMPATIBILITY: 36 tooth
Weight: 183g per pair
Technology: Exact Actuation ratio for 10 speed
COMPATIBILITY: XX 2x10 only
Hardware: AL-7075-T6 and stainless steel; TORX® T25 bolts
BODY MATERIAL: Carbon fiber top cover; composite lower cover
BLADE MATERIAL: Carbon fiber pull; composite release
ADJUSTABILITY: Lever blade position
The all-new two-piece forged magnesium caliper allows for greater stiffness and performance in a lighter-weight package. The oversized pistons give you more stopping power with less lever pull, for easy one-finger braking.
The perfect XC disc brake. The XX Carbon Fiber Lever Blade is nearly 30 percent lighter than our Juicy® Ultimate. The new U-clamp requires only one bolt, with or without MatchMaker X. Paired with the MatchMaker X clamp the XX Brake Lever gives you unparalled installation and adjustment options.
MATERIAL: Forged magnesium lever body, carbon fiber lever blade
ADJUSTMENTS: Tool-free pad contact-point adjustment; tooled reach adjust
FEATURES: TaperBore technology, Power Reserve Geometry, Ambidextrous, DOT 5.1 Fluid
Suggested Retail Prices
XX Suspension ForksRockShox SID XX World Cup 32mm Dual Air 100 Motion Control XX Remote Carbon Crown/Steerer $1,120
SRAM XX Front Derailleur $106-119
SRAM XX Shifter Trigger Set w/Discrete Clamp $276