Do keep in mind that great electric brakes is a combination of both electrical and mechanical parts working together. If one has weak electrical and upgrades the mechanics, their improvement gain isn't very much. Since upgrading mechanical area (re: larger size brake assemblies), recommend upgrading its electrical wiring as well. re: Replace default factory linear design with much better thicker wire using STAR design. If wondering, all of my trailers (RV, boat, utility) have been upgraded to STAR design. Much better braking power - even with factory size brake assemblies.