If you made us pick a wheelset for our next trail build or for our current steed, ENVE's M635 27. 5in Boost Wheelset would be at or near the top of a very short list. It simply distills everything we want in a modern trail wheelset into a potent and competent package. Ideal for days that see elevation numbers climb towards five digits and require a confidence inspiring ride that will have you charging those hard earned lines on the way down, this wheelset does it all. This latest version sees a massive increase of internal width all the way up to 35mm, which helps you get the most out of the latest crop of new rubber in the 2. 5 to 2. 8in range. Boost spacing, front and rear, ensures that the bike has adequate stiffness between the dropouts and that it accurately tracks through any high-speed corner and steamrolls the gnarliest rock gardens on the mountain. The increased tire volume and stiffness granted by the increased width make the M635 the definitive wheelset for all-mountain outings. The M635 caters to the ever growing segment of riders who prize the increased traction and comfort that comes with riding larger volume tires without resorting to the heavy and often vague feeling ride that comes from plus tires and wheels. The M635 amazingly comes in at a lower weight than the HV model and is a perfect complement to your 5 to 6. 5in trail and all-mountain ride. The redesigned, larger hookless bead is both substantially more impact resistant than the outgoing HV and is designed to mitigate pinch flats. Of course, the extra width internally is perhaps the biggest star of the show, and we've really come to appreciate the higher tire volume it allows. With it comes an increase in cornering stability and more tread on the trail so you can attack sections with a new found furor. All ENVE wheels, including the M635, feature ENVE's patented manufacturing techniques, which allow the wheels to be light, durable, and impressively stiff. The molded spoke holes, nipple ...