The revolutionary tire insert, CushCore mounts inside your tubeless mountain bike tire next to the rim. Not just for rim and puncture protection, CushCore improves suspension performance by 16% and reduces impact force from big hits by 50%. Enjoy 35% more sidewall stability, eliminating tire squirm and burping, even at low tire pressure, so that you can rail corners with total confidence. Not only that CushCore provides a 12% smoother ride and 3% reduced rolling resistance. Ride with more control, more momentum, and less fatigue. Effectively, CushCore transforms your tubeless tire into a suspension system with a tune-able air spring and foam damper, providing a faster, smoother ride. Designed to be used with tubeless-ready or tubeless converted mountain bike rims, this insert can be used for both front and rear wheels, each insert includes a matching CushCore tubeless air valve with presta valve head. The CushCore Pro fits tire widths 2.1″ to 2.6″ and inner rim widths 22mm to 35mm.