STARTER AND ONE-WAY CLUTCH

The present invention relates to an outer race (1) for a one-way clutch (100) comprising a race chamber (12) surrounded by circumferential wall (11) and comprising a plurality of roller chambers (13), the circumferential wall (11) inside the roller chambers (11) having a radial diameter gradually decreasing in a first circumferential direction (D1), comprising an end body (14) at a first end to be integral with the circumferential wall (11) and an opening (15) at a second end between the axial ends of the race chamber (12), comprising a groove (143) concave into the first end at the end body (14) within each of the roller chambers (13), and comprising a first transition (141) between the circumferential wall (11) inside the groove (143) and the end body (14) and a second transition (142) between the circumferential wall (11) outside the groove (143) and the end body (14), the radius of curvature of the first transition (141) being greater than the radius of curvature of the second transition (142).