Abstract: A strut for McPherson type automobile suspensions wherein, in order to minimize the maximum bending stress occurring in the tubular member forming the cylinder of the liner type shock absorber, the knuckle bracket fitted to the lower end of the tubular member is formed by the first bracket with a U-shaped cross-section and the second bracket with a -shaped cross-section fitted in the opening part of the said first bracket and a ribbed part is formed beforehand by extending upward the upper end part of the said second bracket so that, by contacting the said ribbed part to the outer walls of the said tubular member, those parts which receive the maximum bending stress may be reinforced.