The Maxxis Downhill inner tube is built for gravity riding, where tubes take the heaviest impacts and highest pinch-flat risk of any mountain bike discipline. This 27.5in tube is Presta-valved and sized for tyres between 2.2in to 2.5in, with a thicker wall than a standard tube to suit the demands of modern downhill tracks. Downhill-Specific Build 1.5mm tube wall, thicker than a standard inner tube, built to cope with repeated heavy impacts and rock strikes Maxxis positions this tube as downhill-specific, developed in line with how downhill courses have become rougher and faster Reduces the risk of pinch flats and impact punctures under hard compressions typical of DH racing and bike park riding Fitment Fits 27.5in wheels running tyres from 2.2in to 2.5in Presta valve Black tube Specification Detail Wheel Size 27.5in Tyre Width Range 2.2in to 2.5in Valve Type Presta Wall Thickness 1.5mm Colour Black Weight 490g Sold as a single tube. Built to Maxxis's downhill specification for riders who need a tube that can take a beating. *** image for illustration purposes only ***