T he static stress analysis and displacement of a tricycle rear shock absorber using finite element analysis (FEA) were carried out. The design of spring in the suspension system was also studied. A physical model (pressure model and flow model) was adopted and implemented for the modelling of the tricycle shock absorber. The pressure model determines the internal pressures while flow model calculates the oil flow between the tricycle chambers. Static stress analysis and displacements were performed by varying materials for suspension spring and considering the tricycle weight at a loading capacity of 1500 kg as well as when the loading capacity was exceeded by 200 kg. The analysis was done to validate the strength and determine the best spring material for this application. A comparison was made between the existing spring material Model and other available spring materials. The results showed that the spring made of Inconel X-750 has the least stress value when compared to other spring materials. This makes it a better material in terms of load bearing capability. However, the material retained its position as the most considerable material for making springs when the loading capacity of the tricycle was exceeded and when there is unexpected overloading.