Cannondale's Jekyll 4 blasts up climbs like a short-travel bike, but then hit the switch for the descent and you'll see where the name comes from. Its light, strong SmartFormed aluminum frame boasts large-diameter tubing for efficient power transfer and has a 1.5-inch head tube that keeps the 160mm-travel RockShox Pike fork pinned on your chosen line. A Fox Dyad rear shock crushes bumps with your choice of either 160 or 95mm of travel to meet the demands of the trail and your style of riding. Since the Jekyll lets you climb as well as you descend, you have a Shimano drivetrain with a triple-ring crankset to reach the top. Other trail-dominating components include the Shimano SLX brakes and tubeless-ready, 27.5-inch WTB/Formula wheels with through-axle hubs that are ready to push the Jekyll to the max.