This study evaluates the mechanical feasibility of Sarawak Belian wood (Eusideroxylon zwageri) for use in bicycle frame construction. Belian, a dense tropical hardwood with a lengthy maturation period, is traditionally used in heavy-duty applications. Mechanical tests were conducted to examine its suitability for high-stress applications like bicycle frames, focusing on static bending, compressive strength (parallel and perpendicular to the grain), and tensile strength. The results show that Belian’s mean modulus of elasticity in static bending is 24.752 kN/mm2, significantly lower than typical bicycle frame materials such as aluminum alloy (69 kN/mm2), carbon fiber (up to 250 kN/mm2), and steel alloy (200 kN/mm2), indicating lower stiffness. Compression testing parallel to the grain yielded a mean compressive modulus of 2.544 kN/mm2, while compression perpendicular to the grain resulted in a mean of 1.270 kN/mm2; both values are substantially lower than those of aluminum, carbon fiber, and steel, suggesting limited load-bearing capabilities. In tensile tests parallel to the grain, Belian demonstrated a mean tensile modulus of 1.199 kN/mm2, compared to aluminum’s 69 kN/mm2, carbon fiber’s 70–250 kN/mm2, and steel’s 200 kN/mm2. These results indicate that Belian is less stiff and strong under tension, compression, and bending than these conventional materials. Despite its lower stiffness, Belian’s natural viscoelasticity and vibration-damping properties could offer benefits in non-structural or hybrid applications within bike frames where flexibility and shock absorption are advantageous. These findings suggest that while Belian wood may not replace high-performance materials in primary frame structures, it has potential for selective use in specific bicycle components, contributing to a unique combination of aesthetic and functional qualities.