2018 Sea Ray SLX 400 Boat in Tulsa, OK 74137 US
Built in 2018
SLX 400
1 Engine (--)
40 feet
Gas
Other
Price History
| Date | Event | Price |
|---|---|---|
| 11/1/25 | Initial price | $399,000 |
2018 Sea Ray SLX 400 Video Tours
Boattest.com Review
Overview
The Sea Ray 400 SLX with outboard power represents a refined blend of performance and comfort, featuring the latest Mercury 300 horsepower V8 outboards. This model maintains ample swim platform space despite the outboard configuration and integrates advanced technology and thoughtful design elements throughout the vessel.
Exterior Design and Swim Platform
The swim platform remains spacious, extending only 16 inches from the transom at its narrowest point, ensuring no compromise in usable space despite the outboard engines. The transom is equipped with 9-inch pull-up cleats on both sides, and deep storage compartments under the port side seating accommodate longboards, skis, and wakeboards. A convenient inflator for water toys is included, along with a cleverly stored pole that can be used to support a stand-up transom shower. Shore power connections, city water inlet, electrical and TV hookups, and a fresh water washdown are all neatly organized in one area, complemented by USB connectivity adjacent to the lounge.
Power and Performance
Powered by triple Mercury 300 horsepower V8 outboards featuring advanced technology such as larger alternators and quieter operation, the 400 SLX delivers impressive performance. The boat weighs approximately 21,258 pounds with fuel and passengers aboard. During testing, it reached a top speed of 51.8 miles per hour at 5,900 RPM, with an optimal cruise speed of 32.9 miles per hour at 4,000 RPM. Fuel consumption at cruise was measured at 34.8 gallons per hour, yielding a range of 319 statute miles while retaining a 10% fuel reserve. The vessel planes quickly, achieving 20 miles per hour in 6 seconds and 30 miles per hour in 9.5 seconds. Handling is responsive with a comfortable turning radius, and the joystick docking system allows for precise maneuvering in tight spaces. The hull design provides a smooth ride with minimal hull slap or pounding, even when crossing wakes at speed.
Mechanical and Systems Layout
The engine compartment is thoughtfully arranged, featuring an optional SeaKeeper 3 gyro stabilizer mounted centrally with stringers pre-built to accommodate it. On the port side are house and engine start batteries along with the generator, while the starboard side houses hydraulic components for the terrace. The vessel includes a generator and the innovative Fathom ePower system, which provides 22 kilowatt-hours of lithium-ion battery capacity to power onboard electrical systems such as air conditioning, electric grills, and refrigeration. This system intelligently manages power loads and interfaces with the Simrad multifunction displays for real-time monitoring and can be recharged via engine alternators, generator, or shore power.
Helm and Electronics
The helm station is one of the most refined in its class, featuring a soft-touch dash and dual 12-inch Simrad Evo 3S multifunction displays with the NaviOp system for comprehensive control of electrical systems and lighting presets. The displays support up to six panels simultaneously and include tide graphs, engine data, vessel controls such as cruise control, troll control, and active trim. Additional helm features include sport exhaust controls, flush-mounted Fusion stereo, spotlight control, Seakeeper controls, auto glide automatic trim tabs, joystick docking, and a Simrad VHF radio. Dual helm seats are ergonomically designed with 24-inch width, flip-up bolsters, and adjustable fore and aft swivel functionality. Generator and 120-volt AC controls are conveniently located beneath the port helm seat.
Deck and Bow Features
The deck layout includes strategically placed cleats for secure mooring, with a 10-inch cleat forward of midships and another at the bow. The bow area features dual hatches providing access to the ground tackle, which can be remotely controlled. Fresh water washdown is located nearby, flanked by LED navigation lights and a remote-controlled spotlight on the port side, enhancing safety and convenience.
Conclusion
The Sea Ray 400 SLX outfitted with triple 300 horsepower Mercury V8 outboards offers a compelling combination of power, technology, and comfort. Its well-considered design preserves functional space while integrating advanced systems such as the SeaKeeper gyro stabilizer and Fathom ePower battery system. Performance testing demonstrated quick acceleration, efficient cruising, and smooth handling, complemented by a sophisticated helm and electronics package. Overall, the 400 SLX is a versatile and comfortable boat that performs confidently in a variety of conditions, making it a strong contender in its class.
Overview from around the web 2018 Sea Ray SLX 400
Customers praise the 2018 Sea Ray SLX 400 for its sleek design, spacious and luxurious interior, and impressive performance on the water
Many highlight its smooth handling and powerful engine options, making it ideal for both relaxing cruises and watersports. The attention to detail in craftsmanship and high-quality materials used throughout the boat are frequently noted, along with the advanced technology features that enhance comfort and convenience. Overall, owners appreciate the SLX 400 for combining style, comfort, and performance in a versatile and reliable package.
The Biggest Pros and Cons
The 2018 Sea Ray SLX 400 offers a blend of performance, luxury, and versatility, making it a popular choice for boating enthusiasts. Here are some pros and cons to consider:
Pros
Luxurious Comfort: The SLX 400 features spacious seating with high-quality upholstery and thoughtful design, providing a comfortable and stylish environment for passengers.
Powerful Performance: Equipped with twin engines, it delivers strong acceleration and smooth handling, ideal for watersports and cruising.
Advanced Technology: The boat includes modern navigation and entertainment systems, enhancing the overall boating experience.
Versatile Layout: Its design accommodates both socializing and relaxation, with ample storage and convertible seating options.
Quality Build: Sea Ray is known for solid construction and attention to detail, ensuring durability and reliability.
Cons
Fuel Consumption: Due to its size and powerful engines, the SLX 400 can be less fuel-efficient compared to smaller boats.
Price Point: As a luxury model, it has a higher purchase price and maintenance costs, which may be a consideration for budget-conscious buyers.
Size Constraints: While spacious, the 40-foot length may limit accessibility to smaller marinas or docks.
Learning Curve: The advanced features and systems may require some time for new owners to fully master.
Made For
The 2018 Sea Ray SLX 400 is perfect for boating enthusiasts who value luxury, performance, and versatility. It's ideal for families and friends looking to enjoy comfortable day cruising, watersports, and entertaining on the water. With its spacious layout, powerful engine options, and upscale amenities, the SLX 400 suits those who want a stylish and dependable boat for both relaxing outings and active adventures.
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 2018 Sea Ray SLX 400 | |||||
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| $399,000 | $376,222 | $350,000 | $239,900 | $229,900 | $164,850 |
| Tulsa | Afton | Oklahoma City | Kingston | Skiatook | Catoosa |
| 40' | - | 26' | 51' | - | 26' |
| - | CUMMINS | - | Cummins | Mercruiser | Mercruiser |
| - | 640 hp | - | 446 hp | 350 hp | 350 hp |
| 220 | 278 | 4 | 204 | 344 | 384 |
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Meet the Broker
Address
Boat Location
Contact Arrowhead Boat Sales about 2018 Sea Ray SLX 400
32894 South 4507 Road, Grand Lake, OK, 74331
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