Minn Kota Riptide Transom-Mount Trolling Motor offers advanced corrosion protection. Premium-grade alloys are impervious to rust. Metals undergo a rigid multi-step cleaning process before being anodized or coated with special zinc dichromate armor plating. All components are then finished with a 5-mil TGIC polyester powder coat paint. All models except SC (5/3 speed) models feature Digital Maximizer Technology, which allows up to five-times-longer run time on a single charge. All Riptide trolling motors feature a sacrificial zinc anode to fight galvanic corrosion. The replaceable anode is conveniently mounted on the prop hub for better protection and longer motor life. Mfrs. 2-year limted warranty. Saltwater-engineered, premium-grade marine alloys Indestructible composite shaft, stronger than stainless steel Fully encapsulated electronics control boards are fully encapsulated in marine-grade urethane Sacrificial anode patented, replaceable anode protects metallic components from galvanic corrosion View the Minn Kota Certified Boating Center Guide