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Sea Ray

Meticulous Craftsmanship. Effortless Performance.

© 2026 Sea Ray. All rights reserved.

SLX 400 Sterndrive

NMMA Innovation Award winner. The Entertainer. A premium socializing environment built for richer, fuller days on the water.

Specifications & Options

Hull dimensions and equipment for this model.

Hull Length (engine up)—
Hull Length (engine down)39' 6" (12.04 m)
Beam Overall12' 1" (3.68 m)
Draft (engine up)—
Draft (engine down)—
Bridge Clearance to Sport Tower—
Bridge Clearance to Windshield—
Maximum Power860 HP (641 kW)
Fuel Capacity250 gal. (946 L)
Freshwater Capacity—
Holding Tank—

Adventure awaits

Winner of an NMMA Innovation Award, Sea Ray's SLX 400, "The Entertainer", combines peak performance, superior comfort, incredible versatility and style, and state-of-the-art technology. The result is more than a boat — it's a premium socializing environment. Every facet of the SLX 400 has been thoughtfully designed for maximum enjoyment, from the inviting cockpit and cabin to the sleek digital helm to the innovative fold-down swim terrace. So you and your friends can experience richer, fuller days on the water.

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See the SLX 400 in motion

Watch the SLX 400 from bow to stern, with the fold-down swim terrace, accent-lit cockpit, and digital helm on full display.

More of the SLX 400

Designed to deliver

Mercury-connected performance, Quiet Ride hull, Sea Ray+ remote monitoring. Engineered to be as smart as it is striking.

Powerful Performance

Mercury VesselView Mobile keeps you fully connected with your engine through your phone. Customize digital gauges, monitor fuel, and compare performance metrics to optimize speed and efficiency.

Quiet Ride Technology

Innovative hull design significantly reduces noise and vibration for a smoother, quieter ride. Better fuel efficiency means more time on the water.

All the way to the water

Turn heads with the revolutionary fold-down swim terrace. This innovative feature generously extends your swim platform and your fun on the water, transforming the stern into a wide stage that meets the waterline.

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Bring everyone along

For overnighting, premium comforts extend to the cabin via a queen-sized bed in the aft section and a forward bunk that converts to form a social gathering area. Up at the bow, find a row of forward touring seats with armrests and additional benches surrounding a stylish bow table that converts into a sunpad.

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The Sea Ray promise

Built on 65+ years of marine craftsmanship, the SLX 400 is the NMMA Innovation Award-winning flagship of the SLX line. The Sea Ray+ mobile app keeps you connected to your boat from anywhere. Premium materials, ergonomic design, and obsessive attention to detail are standard on every Sea Ray we build.

Dual Glass Dash Displays

Helm features dual 9" (optional 12") Simrad touchscreens with Mercury VesselView Link Data, chartplotting, and depth/fishfinder. Clear, intuitive interface for navigation.

Peace of Mind

Remotely view geofencing, engine data, and alerts via the Sea Ray+ mobile app. On shorepower, monitor battery and bilge data so your boat is ready when you are.

Ready to find your SLX 400?

Talk to a Sea Ray dealer about the fold-down swim terrace, cabin overnighting options, the Sea Ray+ app, and availability in your area.

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