Yamaha 425HP DEC | LXF425XSB

The Yamaha LXF425XSB is the counter-rotation edition of the 425 hp XTO Offshore outboard, built for twin-engine transoms where one motor needs to spin opposite the other. It weighs 952 lbs, runs an 8-cylinder, 5,559cc four-stroke block through a 25-inch shaft, and pairs Yamaha's DEC digital controls with an integrated electric steering system instead of a hydraulic or mechanical ram.

What sets this unit apart

The counter-rotation lower unit is the defining feature here, matched with a digital throttle and electric start. A safety lanyard cuts the engine if the operator is thrown from the helm, and the LXF425XSB rinses its own cooling passages through a built-in flush port once you are back at the dock. Iridium spark plugs and a quad-thermostat layout support the powerhead, both aimed at steady combustion and even temperatures across the eight cylinders.

Before you order

Counter-rotation gearcases exist to balance torque steer on multi-engine rigging, so confirm with your rigger which side of a twin or triple setup the LXF425XSB is meant to occupy before it ships. Direct injection and a 25-inch shaft are fixed on this model, and full throttle operation is rated for 5000 to 6000 rpm.

Common questions

Does this come with a propeller? No, the prop is sold separately for the LXF425XSB.

What is covered under warranty? Yamaha covers the LXF425XSB for 5 years as new stock.

Can I pair this with a standard-rotation motor? That pairing is exactly the point of a counter-rotation lower unit on a multi-engine transom.