Metalúrgica Riosulense S.A. operates as a manufacture and sale of components for light vehicle engines, utility vehicles, trucks, agricultural machinery, motorcycles, as well as products aimed at rail and naval transport in Brazil. It offers spare parts, such as camshafts, pistons, valve guides, injector sleeves, valve tappets, cylinder liners, valve seats, combustion pre-chambers, rocker arms, piston rings, engine valves, reamers, piston with ring, valve springs, and crankshaft rings; specialized tools for railway maintenance; and casting models. The company also exports its products. Metalúrgica Riosulense S.A. was founded in 1946 and is headquartered in Rio Do Sul, Brazil.