Vitus Sommet 297 frame, it is a Mullet enduro frame that is also compatible to be set up as either a 29" or 27.5". All specifications can be found on Vitusbikes.com by searching for the model; the rear triangle is aluminum and the front triangle is carbon. New frame, still in the box, never assembled, therefore in perfect condition as it is new. Purchased from the official supplier Ascend Components, whose website you can find, with the possibility of purchasing parts if necessary.