Já olhei esse site por outras vezes, porém creio eu que teria que ter um importador para legalizar esse produto e colocar a chancela do INMETRO. Teria que ver essa questão legal pois, pelo que vi, substitui o engate do carro. The best option for trailers with surge brake couplers is a system like the Reese SC Weight Distribution System, item # RP66151, which is designed to help stop sway and increase vehicle handling by distributing the tongue weight of the trailer to the vehicle and trailer axles and using friction pads on the spring bars to stop sway once it begins.
http://www.etrailer.com/p-RP66157.html%5Bhr%5D Does the Equal-i-zer hitch work with hydraulic or surge brakes? The Equal-i-zer hitch will work with most trailers equipped with surge brakes because the spring arms rest on rigid Sway Control Brackets, rather than being suspended by chains. The bars slide forward/backward while turning or braking, without the tendency to “spring” back into the straight position like bars hung from chains do. This allows the surge brake to be properly activated, instead of intermittently activating/deactivating the brakes, or not allowing enough compression to activate the surge brakes at all.