2024 Sea Ray SLX 400
$604,000
Boat in Harrison Township, MI 48045 US
Built in 2024
SLX 400
2 Engines (2x MerCruiser)
40 feet
Gas
Fiberglass/Reinforced
This freshwater-only 2024 Sea Ray SLX 400 presents in exceptional condition, showing just 83 original hours and meticulously cared for throughout. During the boating season, the vessel has been hoist-kept, helping preserve the hull and overall condition, and stored inside a heated facility when not in use. This level of care reflects true pride of ownership and makes this one of the cleanest, most well-maintained examples on the market today. Conveniently located at Lakeside Formula in St. Clair Shores in the water for easy viewing.
Powered by twin MerCruiser 8.2L MAG HO engines (430 HP each) with SeaCore saltwater protection, the SLX 400 delivers a powerful yet refined ride with impressive handling and reliability. Known for its commanding presence and smooth performance, this model is built to perform whether you're cruising Lake St. Clair or entertaining at anchor.
The SLX 400 is designed around luxury, space, and social versatility. Expansive seating areas, premium finishes, and an intelligently designed cockpit layout create the perfect environment for entertaining guests or enjoying extended days on the water. From its upscale helm to its thoughtfully appointed lounging areas, every detail reflects Sea Ray's commitment to quality and comfort.
Whether you're looking for a high-end day boat, a weekend-ready entertainer, or a turnkey freshwater vessel with low hours, this 2024 SLX 400 checks all the boxes.
- Twin Mercruiser 8.2L MAG HO 430HP engines with Bravo III X Drives
- Seacore Saltwater Protection (used in freshwater only)
- Automated Submersible Swim Platform
- Extended Sunshade
- 7.5 kW Generator
- A/C & Heat in Cabin
- Cockpit Heat
- Cockpit Refrigerator & Grill
- Satellite Radio (SiriusXM)
- VHF Radio
- Twin Simrad 16” Displays w/ Radar
- Mercury VesselView Link
- Windlass
- Cockpit TV
- Bow Docking Lights
- Teak Bow Table
- Flat Screen TV in Mid-Cabin and V-Berth
- Front, Sides & Aft Canvas Enclosure
- Cockpit & Bow Covers
- Bow Sunshade
- Fender Clips
- SeaDek Throughout Cockpit & Swim Platform
Key Advantages
- Freshwater-Only Great Lakes Boat
- Only 83 Original Hours
- Indoor Heated Storage
- Dealer Maintained
- Immediate Delivery Available
- Easy To Show By Appointment
Premium Equipment & Options
Power & Performance
- Mercury Joystick Piloting with VesselView Link
- Quiet Ride Hull Technology
- Twin Simrad 16" Glass Dash Displays with Radar
- Windlass Anchor System
- Bow Docking Lights
Comfort & Climate Systems
- 7.5 kW Generator
- Cabin Air Conditioning & Heat
- Cockpit Heat
Entertainment & Luxury
- Cockpit Refrigerator & Electric Grill
- Cockpit Television
- Flat Screen TVs in Mid-Cabin & V-Berth
- Satellite Radio (SiriusXM)
- Extended Sunshade
- Bow Sunshade
Swim Platform & Water Access
- Automated Submersible Swim Platform
- SeaDek Cockpit & Swim Platform Flooring
- Fender Clips
Deck & Cockpit Features
- Teak Bow Table
- Bow Seating Conversion Sunpad
- Cockpit & Bow Mooring Covers
- VHF Marine Radio
- Front, Sides & Aft Canvas Enclosure
- Cockpit Cover
Cabin Accommodations
The spacious cabin provides comfortable overnight accommodations with a queen-size aft berth and forward convertible sleeping area, along with air conditioning, entertainment systems, and premium finishes.
Perfect for weekend cruising or extended days on the water.
Freshwater SLX 400 boats are among the most desirable on the market due to reduced corrosion and long-term condition advantages compared to saltwater boats.
- New Boat Condition
- Indoor Storage Since New
- Low Hours
- Premium Options
- Immediate Availability
Without the wait time or cost of ordering new.
Cup holders, stainless steel (29)
Floor liner, fiberglass
Lighting, LED (courtesy)
Outlets, 12V accessory (bow, helm & transom) – 3
Outlet, 120V GFCI
Outlets, USB dual port (4)
Self-bailing cockpit
Steps, boarding (integrated)
Table, teak (cockpit)
DOORS
Bow block-off door, fiberglass
Cabin entry door, sliding lockable (fiberglass)
Engine room hatch, electrically actuated with emergency pull handle & prop rod
Hatch for bilge access
Transom door, fiberglass
SEATING
Aft L-shaped bench seating with rotating backrest & storage below
Bow seating with foldable armrests, fixed cushions & storage below
Cockpit social area with opposing seating & storage
Helm bucket seats (dual) with sliders, flip-up bolsters & telescopic pedestal mounts
Port companion bucket seat, two-person with swivel, slider & flip-up bolster
Sunpad with rotating backrest
STORAGE
- Bow storage (under seating)
- Cooler storage (cockpit)
- Fender storage (bow floor)
- Shoe storage (cockpit)
- Side panel tubs (bow)
WET BAR
- Countertop, solid surface
- Handrail, Chil Cool Technology vinyl-wrapped stainless steel
- Outlet, 120V GFCI
- Refrigerator, dual voltage
- Sink, stainless steel with faucet
- Trash receptacles, pull-out
- Cleats, stainless steel through-bolted (10′′) – 6
- Cleats, stainless steel pop-up (8′′ – stern) – 2
- Deck fill plates, stainless steel
- Drain plug, brass-threaded (garboard)
- Eye, stainless steel with stainless steel scuff plate (bow)
- Eyes, stainless steel (stern) – 2
- Handrails, Chil Cool Technology vinyl-wrapped stainless steel (bow & cockpit)
- Hardtop, fiberglass
- Horn, stainless steel
- Hull windows, acrylic
- Light, foldable (stern)
- Lights, navigation (stainless steel)
- Pullout sprayer (transom)
- Quiet RideTM technology
- Rub rail, PVC with stainless steel insert
- Stringer system, fiberglass
- Swim platform, integral with stainless steel four-step swim ladder & grab handle
- Swim terrace, electrically actuated fold-down (starboard)
- Thru-hull fittings, stainless steel
- Windlass, thru-hull with bow controls, rope, chain, galvanized anchor & bow washdown
- Windshield, tempered tinted curved glass
- Windshield wiper (starboard)
STORAGE
- Transom storage for dock lines & gear (under sunpad)
- Transom storage for paddleboards, gear & inflatables with gas-assisted fiberglass lid (under sunpad)
The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.
Price History
| Date | Event | Price |
|---|---|---|
| 4/16/26 | Price decreased | $604,000(-2.4%) |
| 3/19/26 | Price decreased | $619,000(-4.8%) |
| 2/24/26 | Price decreased | $649,900(-4.3%) |
| 11/7/25 | Initial price | $679,000 |
Videos from Lakeside Formula on this 2024 Sea Ray SLX 400
2024 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 2024 Sea Ray SLX 400
Customers are praising the 2024 Sea Ray SLX 400 for its sleek design, powerful performance, and exceptional comfort
Many highlight the spacious and well-appointed cockpit, noting the high-quality materials and thoughtful layout that make it perfect for entertaining and relaxing. The boat's smooth handling and impressive speed receive frequent compliments, as does the advanced technology integrated into the helm for ease of navigation and control. Overall, owners appreciate the blend of luxury and functionality that the SLX 400 offers, making it a standout choice for both day cruising and longer outings on the water.
The Biggest Pros and Cons
The 2024 Sea Ray SLX 400 offers a blend of luxury, performance, and advanced technology, making it a standout in the luxury sport boat category. Here are some pros and cons to consider:
Pros
Luxurious Design: The SLX 400 features a sleek, modern design with high-quality materials and finishes, providing an upscale onboard experience.
Spacious Layout: Ample seating and thoughtful layout accommodate family and guests comfortably, including a versatile sunpad and large swim platform.
Powerful Performance: Equipped with robust engine options, the boat delivers impressive speed and smooth handling, ideal for watersports and cruising.
Advanced Technology: Includes state-of-the-art navigation, entertainment systems, and digital controls for enhanced convenience and safety.
Comfort and Amenities: Features such as a well-appointed cabin, premium sound system, and customizable options elevate the onboard comfort.
Innovative Storage Solutions: Cleverly designed compartments maximize storage without sacrificing space or aesthetics.
Cons
Price Point: As a luxury sport boat, the SLX 400 comes with a premium price tag, which may be a consideration for budget-conscious buyers.
Fuel Consumption: Powerful engines, while delivering great performance, can result in higher fuel consumption compared to smaller or less powerful boats.
Size and Weight: The boat’s size and weight may limit ease of trailering and require a larger vehicle for transport.
Learning Curve for Technology: The advanced digital systems may require some time for new owners to fully master and customize.
Made For
The 2024 Sea Ray SLX 400 is perfect for boating enthusiasts who seek a luxurious and versatile vessel that combines performance, comfort, and advanced technology. It’s ideal for families and friends looking to enjoy a day on the water with spacious seating, premium amenities, and smooth handling. Whether you’re into water sports, entertaining guests, or relaxing cruises, the SLX 400 offers a refined experience tailored to those who value style, innovation, and quality in their boating adventures.
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 2024 Sea Ray SLX 400 | |||||
|---|---|---|---|---|---|
| $604,000 | $525,000 | $479,747 | $359,000 | $184,900 | $129,900 |
| Harrison Township | Harrison Township | Holland | Holland | Grand Haven | Harbor Springs |
| 40' | 40' | 35' | 35' | 35' | 28' |
| 4' | - | - | - | - | - |
| MerCruiser | Mercury | Mercruiser | MerCruiser | Mercruiser | MerCruiser |
| 430 hp | 350 hp | 380 hp | 350 hp | 380 hp | 350 hp |
| 217 | 257 | 548 | 103 | 252 | 309 |
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Meet the Broker
Address
Boat Location
Contact Lakeside Formula about 2024 Sea Ray SLX 400
24200 Jefferson, St. Clair Shores, MI, 48080
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