YBR125 motorcycle big support spring, total length of 100MM, hook size and YBR125 big support support/frame interface completely match, directly replace the original spring, no need to adjust the installation position; Made of 65Mn manganese steel, the surface is plated with color zinc for rust prevention, elastic and durable fatigue resistance, suitable for the load-bearing condition of frequent opening and closure of large support; The elastic parameters are strictly in line with the original factory, and the strength of the large support is moderate when it is expanded/retracted, which not only saves effort but also ensures the stability of parking; The spring steel material has strong anti-deformation ability, and the elastic force will not decay after long-term use, prolonging the replacement period of parts.