SRAM Force 22 GXP Crankset $320.95
Once again, pulling from its older Red sibling.
While the announcement of 22 gears might draw most people's attention toward the new Force 22, we'd argue the biggest achievement of the new group was SRAM's generous carryover of Red's technology. The Force 22 GXP Crankset showcases this most clearly, as it was constructed with unidirectional carbon crank arms and received Red's hidden bolt pattern and innovative 'True 22' X Glide R chainring calibration, giving you the ultimate in drivetrain power and precision.
The new SRAM Force 22 GXP Crankset was built using unidirectional carbon in the crank arms, matched to a forged alloy spider. This design is similar to that which SRAM employed with its Red/Quarq design, and it now incorporates the spindle into the crankset's non-driveside arm. Because of its large carbon-optimizing structure, SRAM's crank arms are able to use less material, effectively reducing weight without negatively affecting stiffness. This also allowed them to rotate the spider to take advantage of the large, flex-fighting crank arm.
SRAM chose to stick with the 130mm bolt circle diameter standard, ensuring compatibility with aftermarket chainrings, but they've arranged the spider to position a mounting bolt on the backside of the crank arm. By integrating a mounting location within the existing carbon structure, they're able to reduce weight and deflection from shifting -- effectively enhancing the accuracy, speed, and quality of front shifts.
The Red Exogram chainrings have also trickled into Force 22. These rings received extensive reworking with the development of Red, which now boost front shifting performance, specifically focusing on integration with the rotating, Yaw-caged front derailleur. Coined X Glide R, these chainrings are machined from 5mm thick 7075-T6 aluminum and now have been carefully tuned to accommodate the 11-speed drivetrain. SRAM used extensive computer-aided finite element analysis to optimize stiffness first, followed by shift ramp profiles. Then they set out to eliminate any unnecessary material without affecting the structure. SRAM placed the new shift pins to correlate with your cadence and cut the ramps to into a profile that works seamlessly with the new Force front derailleur.
The Force 22 GXP Crankset does not come with a bottom bracket, but is compatible with the SRAM/Truvativ GXP standard, including the low-friction hybrid ceramic bearing option. It comes in 170, 172.5, and 175mm lengths, and both 53/39 and 50/34 chainring configurations are available.