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Kelly's Buoys

2021 Sea Ray SLX 400 Outboard

Boca Raton, Florida · 120 engine hours · Updated Jul 20, 2026

$599,000

USD · OFFERS CONSIDERED

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40 ft
Length
12 ft
Beam
Bowrider
Class
Mercury Verado 600
Engine
600 HP (1,200 total)
Power
120
Hours
1
Cabins
—
Heads

Overview

2021 Sea Ray 400 SLX OB – Twin Mercury 600 Verados 


This 2021 Sea Ray 400 SLX OB is a truly unique opportunity, Kept in like-new condition and professionally maintained, this luxury performance bowrider blends cutting-edge technology, premium comfort, and exhilarating performance into a standout package.


Powered by twin Mercury 600HP Verados with just 120 hours, this vessel delivers impressive performance with speeds approaching 58 MPH, while still offering an efficient cruise around 35 MPH at approximately 0.9 MPG. Equipped with Mercury Joystick Piloting, Dynamic Running Surface automatic trim tabs, and dual Simrad touchscreen displays with radar, this boat is as easy to operate as it is exciting to drive.


The spacious layout offers best-in-class seating for up to 20 guests, highlighted by a large social cockpit, rotating aft sun lounge, premium wet bar, and expansive bow seating. Below deck, the air-conditioned cabin features a forward convertible lounge, aft queen berth, enclosed head, and overnight accommodations for extended weekends on the water.


Loaded with premium upgrades including a custom paint job, custom SeaDek flooring, upgraded Fusion audio system, generator, underwater lights, retractable SureShade, and full canvas package, this one-of-a-kind Sea Ray is turn-key and ready for its next owner.


Key Highlights

  • One-of-one 2021 Sea Ray 400 SLX OB
  • Twin Mercury 600HP Verados with only 120 hours
  • Top speed near 58 MPH
  • Mercury Joystick Piloting with e-Steering
  • Efficient 35 MPH cruise at approx. 0.9 MPG
  • Dual Simrad NSO evo3 16” touchscreen displays
  • Simrad HALO24 radar and RS40 VHF
  • 7.5kW Westerbeke GAS generator (135 hours)
  • Custom paint and custom SeaDek flooring
  • Fusion Premier audio system with subwoofer
  • Best-in-class seating capacity for 20 passengers
  • Fiberglass hardtop with automated SureShade
  • Air-conditioned cabin with aft queen berth
  • Dynamic Running Surface automatic trim tabs
  • Electric swim terrace and large social cockpit
  • Underwater lights and upgraded entertainment systems
  • Professionally maintained and washed every two weeks


Specifications

Length Overall
40 ft
Beam
12 ft
Draft (max)
3 ft
Draft (min)
2 ft
Bridge Clearance
11 ft
Hull Material
Fiberglass
HIN
SERY1315K021
Condition
Used
Cabins
1
Berths
4
Fuel Capacity
375 gal
Water Capacity
50 gal
Holding Tank
28 gal

Engines (twin)

Mercury Verado 600 (#1)

Year
2021
Power
600 HP
Hours
120
Drive
Inboard
Notes
Port

Mercury Verado 600 (#2)

Year
2021
Power
600 HP
Hours
120
Drive
Inboard
Notes
Starboard

Location

Location Boca Raton, Florida, United States
Flag / Registration United States
Region Continental United States

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Ward Yacht Sales

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Questions about 2021 Sea Ray SLX 400 Outboard

What is the asking price for 2021 Sea Ray SLX 400 Outboard?

2021 Sea Ray SLX 400 Outboard is currently listed at $599,000. Final terms depend on survey, sea trial, and offer structure.

Where is 2021 Sea Ray SLX 400 Outboard located and can I schedule a showing?

2021 Sea Ray SLX 400 Outboard is located in Boca Raton, Florida and is marked Available. Showings and sea trials can be arranged for qualified buyers through our team.

What are the key specs for 2021 Sea Ray SLX 400 Outboard?

2021 Sea Ray SLX 400 Outboard is 40 ft overall and includes 40 ft · Bowrider · fiberglass.

Is financing available for 2021 Sea Ray SLX 400 Outboard?

Yes. Marine financing is available for many vessels, with terms based on model year, buyer profile, and lender underwriting.

Can I get a survey and mechanical inspection before closing?

Yes. Buyers are encouraged to complete an independent marine survey and engine/mechanical inspections during due diligence before final acceptance.

Is this a co-brokerage listing with American Yachts?

Yes. This vessel is listed by American Yachts. Ward Yacht Sales can represent you as a buyer's broker and coordinate the process through closing.

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