2018 Sea Ray SLX 400 Boat in Austin, TX 78734 US
Built in 2018
SLX 400
3 Engines (2x MerCruiser, Mercruiser)
39.5 feet
Gas
Fiberglass/Reinforced
Winner of a 2017 NMMA Innovation Award, the SLX 400 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 has been thoughtfully designed for maximum enjoyment, from the inviting cockpit and cabin, to the sleek digital helm, to the innovative new convertible swim terrace. All so that you and your friends can experience richer, fuller days on the water. Because the ultimate talent of an entertainer is making every guest feel right at home.
This is the all day on the water type of vessel and it has everything you need to spend the night. The air-conditioned cabin features a flat screen tv, microwave, stand up head with shower, fridge, a convertible dinette, Queen bed birth. When away for the night the kohler gen set will provide ample power to keep your batteries charged and the AC cold.
The cockpit has all the shade you need and then if wanted all the sun you can handle. Surrounded by an ample sound system this is the hang out place on the lake. The flooring is all real teak along with the tables. There is a wine fridge and wet bar with twin electric grills. The aft is all about sunbathing and swimming with a drop down beach platform on the starboard side and the hydraulic swim platform make getting in and out of the water a breeze.
This boat has more features than we can mention and deserves a look if your wanting the ultimate in day or weekend boating.
This boat is moored at Crosswater Yacht Club, two time marina of the year in Texas and a stand out clean marina as well. The slip can convey to new owner with an annual contract. The hoist is available for sale as well.
Schedule a walk through showing today.
Price History
| Date | Event | Price |
|---|---|---|
| 3/30/26 | Price decreased | $379,990(-5.0%) |
| 1/26/26 | Price decreased | $399,995(-11.1%) |
| 6/28/25 | Initial price | $449,995 |
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 layout, and powerful performance
Many highlight the boat’s luxurious features, including comfortable seating, high-quality materials, and advanced technology that enhance the overall boating experience. Users often mention the smooth handling and responsive controls, making it ideal for both cruising and water sports. Additionally, the ample storage and well-thought-out deck space receive positive remarks for convenience and versatility. Overall, owners appreciate the balance of style, comfort, and performance that the 2018 Sea Ray SLX 400 delivers.
The Biggest Pros and Cons
The 2018 Sea Ray SLX 400 offers a luxurious and versatile boating experience, blending performance with comfort. Here are some pros and cons to consider:
Pros
Spacious Layout: The SLX 400 features a well-designed cockpit and bow seating area, providing ample space for entertaining and relaxing.
Powerful Performance: Equipped with strong engine options, it delivers smooth acceleration and impressive top speeds, making it great for watersports and cruising.
High-Quality Build: Sea Ray is known for its craftsmanship, and the SLX 400 features premium materials, stylish finishes, and solid construction.
Advanced Technology: Includes modern features such as touchscreen controls, premium sound systems, and optional joystick docking for easier handling.
Comfort and Amenities: Offers amenities like a spacious sunpad, wet bar, enclosed head compartment, and optional air conditioning, enhancing onboard comfort.
Cons
Price Point: As a luxury model, the SLX 400 comes with a higher price tag, which might be a consideration for budget-conscious buyers.
Fuel Consumption: With its powerful engines, fuel efficiency is moderate, leading to higher operating costs compared to smaller or less powerful boats.
Size Limitations: While spacious, the boat’s size may limit storage space onboard and can be less maneuverable in tight docking situations without the optional joystick control.
Maintenance Costs: Premium features and finishes may require more diligent maintenance to keep the boat in top condition.
Made For
The 2018 Sea Ray SLX 400 is perfect for boating enthusiasts who seek a luxurious and versatile vessel that combines performance, comfort, and style. Ideal for families and groups looking to enjoy a day on the water with ample seating, advanced entertainment options, and spacious lounging areas. It’s also well-suited for those who appreciate high-quality craftsmanship and innovative features, whether cruising coastal waters, entertaining guests, or engaging in water sports.
Finance your dream boat!
Finance your dream boat!
Be the first to know when similar boats hit the market
Get notified when new boats become available
Boats For Sale in Texas, United States Similar to the 2018 Sea Ray SLX 400
Compare with similar boats and find the perfect one for you.
 2018 Sea Ray SLX 400 | |||||
|---|---|---|---|---|---|
| $379,990 | $324,995 | $297,278 | $249,884 | $199,990 | $169,997 |
| Austin | Austin | Seabrook | Seabrook | Seabrook | Austin |
| 40' | 35' | 35' | 26' | 32' | 26' |
| 4' | - | - | - | - | - |
| MerCruiser | - | MERCRUISER | MERCRUISER | MerCruiser | - |
| 430 hp | - | 375 hp | 350 hp | 300 hp | - |
| 360 | 777 | 20 | 235 | 196 | 605 |
Other Sea Ray SLX 400 boats for sale in Texas, United States
Other Sea Ray boats for sale in Texas, United States
Meet the Broker
Address
Boat Location
Contact Crosswater Yacht Club about 2018 Sea Ray SLX 400
1505 Hurst Creek Rd, Austin, TX, 78734
Login with Google