The Pivot Switchblade Expert XT Di2 is a carbon enduro mountain bike with a flip chip that lets the same frame ride two ways. The low setting slackens the head angle for steadier descents, and the high setting steepens it for quicker steering. The frame also accepts a 27. 5-inch rear wheel for a mullet setup. This build comes with 29-inch wheels at both ends. What Our Gearhead(R) Experts Are Saying:"On long climbs the steep seat angle keeps my weight over the pedals, so I still have legs left when the trail points down. The 160 millimeter fork then holds the front end up through rough sections, which is why this one bike covers both jobs."Heads up! We do our best to keep bike specs and images current, but occasional component changes can happen without warning, and sometimes the photos might not show the exact build you'll receive. If you want to double-check the details, our Gearhead(R) Experts are always here to help.