the invention concerns a constant velocity tripod joint for motor vehicle transmission systems comprising a male element including several branches , a female element defining for each branch a pair of tracks , symmetrical with respect to a plane , and , mounted on each branch , a mechanical transmission member comprising an outer roller designed to run on one of the corresponding tracks . each track comprises a central zone having a rectilinear transverse profile and inclined at an angle a relative to the plan and a bearing for maintaining the roller radially . each roller has a peripheral surface whereof the central zone is conical and matching the central zones of the tracks , and a front surface adapted to be urged into contact more or less perpendicularly with said bearing surfaces of the tracks under the effect of a driving torque . the invention is applicable to constant velocity tripod joints for transmission systems in motor vehicles .