| SPEED (RD) |
12s |
| CABLE PULL RATIO |
n/a |
| CAGE (RD) |
n/a |
| MAX TOOTH |
36 |
| COLOR (RD) |
Unicorn Grey w/Laser Foil |
| PULLEY BEARINGS MATERIAL |
Steel |
| CAGE MATERIAL (RD) |
Aluminum |
Today’s drop bar bikes are faster and more capable. Riders want a bike with the wide range gearing to match their wide range of cycling pursuits. But, range is only one half of the equation; they also want a drivetrain that offers the right gear for any situation.
So, SRAM has developed X-Range gearing: four 2x chainring sets and five cassettes that cover all riders’ needs, from WorldTour to endurance and gravel.
X-Range achieves wider range and tighter jumps by going to a 12-speed cassette, but also by moving some of the gear range from the front of the drivetrain to the back. We’ve employed smaller chainrings with a consistent 13T difference, while giving the cassettes a 10T-start for wider range (up to 10-36, or 360%!). That means you can stay on the same ring longer, requiring fewer front shifts, which are inherently less efficient than rear shifts. And when a front shift is executed, the smaller jump is smoother and allows you to get to the right cadence with fewer compensation shifts in the rear. Fewer, faster front shifts make it easier for you to find the right gear, and that’s a distinct performance advantage relative to traditional drivetrains.
By starting X-Range cassettes with a 10T cog, we're able to keep the cogs and chainrings smaller overall, eliminating the potential weight gain of a wide-range 11-tooth start drivetrain. It's the best way to expand range and keep small jumps between cogs, something Spanish climber Enric Mas of Movistar Team appreciates.
"The idea of smaller steps between the gears should benefit a rider like me who relies on a consistent cadence when I time trial or climb.”
