Surgarcane bagasse is an industrial waste partially used as fuel for sugar and ethanol processing boilers. A considerably amount of bagasse, however, is disposed into the environment without a practical use. Research works are investigating the possible application of the fibers of these bagasse waste as reinforcement of polymer composites. Thus, the aim of the present work was to evaluate the mechanical behavior of epoxy composites reinforced with different volume fractions, up to 30 %, of thinner sugarcane bagasse fibers. Specimens with aligned fibers were tensile tested at room temperature and the ultimate strength, elastic modulus and total deformation results indicated a superior performance as compared to composites reinforcement with average thicker bagasse fibers