 This study investigated the mechanical and wear properties of heat-treated pultured Kennaf Fibre-enforced polyester composites, PKFPCs, using pultrusion technique, comparing the performance of PKFPCs treated at 120, 140, and 170 degrees Celsius. The results showed that PKFPC with a 140 degrees Celsius heat treatment exhibited better wear performance than untreated PKFPC and PKFPC with 120 and 170 degrees Celsius heat treatments. The flexural strength and modulus of PKFPC increased after heat treatment, and the counterface roughness and heat treatment temperature are the most significant factors affecting the wear performance of PKFPC. The optimum sliding conditions to achieve lowest wear and friction in the tested operating environment were determined. This article was authored by Boon Pengchang, Wai Ho Chan, Moat Hafiz Zamri, and others.