The life fitness optima smith machine is a combination of the beginner friendly weight stabilization of a smith machine with the advanced options of unsupported olympic bar training the life fitness optima series smithrack is a total free weight solution key features of the life fitness optima smith machine smith bar travels at 7 degree angle to replicate the body s natural motion smith bar with a starting resistance of 45 lb 20 kg replicates an olympic bar while offering support olympic b