according to a first presently preferred embodiment of the invention as indicated generally at 10 in fig3 and 4 shown mounted on a snowmobile ski 12 in fig2 and 5 9 the ski 12 includes a ski runner 11 which may be fabricated from plastic material having a vertically depressed centrally disposed elongate keel 13 provided with opposed side walls 15 the runner 10 includes a runner body 14 which is fabricated as a single piece stamped die cut or otherwise totally concurrently cut from a flat sheet or plate of metal stock of a first material such as steel or aluminum based metals the runner body 14 extends longitudinally between opposite ends 16 18 and has an upper surface 20 a lower surface 22 and opposed lateral side surfaces 23 extending therebetween the runner 10 includes mounting features associated with the runner body 14 which are concurrently stamped and operate to mount the runner 10 to the ski 12 in a manner to be described in greater detail below according to the first embodiment the mounting features are in the preferred form of at least a pair of mounting members 24 projecting from and integral with the upper surface 20 of the runner body 14 fig3.