Motor vehicle spare parts, fittings and accessories included in this class, namely, heavy duty, higher rate or modified height coil springs for land vehicle suspensions, suspension springs, suspension dampers, suspension shock absorbers, air pumps, suspension struts, suspension strut and chassis bracing for land vehicle suspension, heavy duty, higher rate land vehicle suspension sway bars and torsion bars, anti-roll bars for land vehicles in this class, land vehicle structural parts in the nature of wheel camber adjusting bolt kits and wheel caster correction kits composed of bolts, bushings, nuts, sleeves, tubes, boots, metal and non-metal sleeves and tubes, metal bolts, and metal nuts and electronic stability and dynamic stability system to allow better control and maneuverability of land vehicles, namely, cars, trucks and trailer, sold as an integral component of these vehicles