Front mower group (10) for tractors comprising a support frame (11), a mower (12) connected below said support frame (11), an angle transmission (13) of the motion coming from a Cardan shaft (14) connected to a front power drive (16) of a tractor (15), a transverse shaft (17) connected at one end to said angle transmission (13) and at another end to a lateral transmission case (18) connected to the side of said mower (12), said mower group (10) moreover comprising an upper frame (19) connectable at its rear portion to a three-point attachment (20) of said tractor (15), said support frame (11) being connected at its upper part, in a movable manner, to said upper frame (19) integral with said tractor (15) by means of movable connection means (30, 31, 32), characterised in that said angle transmission (13) is connected at the rear to a movable support (21), hinged to said upper frame (19), and is frontally hinged to a first end (24) of connecting rod element (22), said connecting rod element (22) comprising a second end (25) hinged to a portion (23) projecting on the upper part of said support frame (11).
