ARB 303001 Old Man Emu Front Torsion Bar Set for Toyota Land Cruiser Lexus LX470. ARB 4x4 Accessories Old Man Emu Front Torsion Bar. Our torsion bars work best when Old Man Emu coil or leaf springs are fitted to the rear of your vehicle, with bars and springs then carefully matched to our premium range of four-wheel drive shock absorbers.