In Stock
Year: 2026
Condition: New
Make: Suzuki
Model: KingQuad 400FSi
Vehicle Type: Utility Sport 400
Warranty: 24-month limited
Color: Terra Green
The 2026 Suzuki KingQuad 400FSi takes a straightforward approach to utility-sport ATV design: deliver useful working capability without losing the responsive character that makes trail riding enjoyable. Rather than building an ATV around a single purpose, Suzuki designed the KingQuad 400FSi to move comfortably between outdoor recreation, property work, ranch duties, trail exploration and everyday utility applications.
The design begins with a compact, purposeful chassis and continues through the Terra Green bodywork, high-clearance fenders, steel cargo racks and rider-focused seating position. Suzuki’s official 2026 model information identifies the KingQuad 400FSi as a utility-sport ATV featuring a 376cc fuel-injected single-cylinder engine and selectable 2WD/4WD.
For buyers searching for a 2026 Suzuki KingQuad 400FSi for sale, that combination is important. A utility ATV should be practical, but it should also remain enjoyable when the workday turns into a weekend trail ride. This Suzuki is designed around that balance.
The 2026 Suzuki KingQuad 400FSi uses Terra Green bodywork with sharply angled, high-clearance fenders. The styling is athletic without being unnecessarily complicated. The body panels help create the distinctive KingQuad appearance while leaving the ATV visually connected to its working purpose.
The front end incorporates the recognizable KingQuad grille design and dual 35-watt headlights. High- and low-beam settings help provide flexibility when riding conditions change, while the bright taillight contributes to visibility during low-light operation. Suzuki also provides an automotive-style DC power outlet on the front fender.
A major strength of the 2026 Suzuki KingQuad 400FSi is how its design considers the practical realities of utility riding.
The front and rear cargo racks are built to support everyday hauling needs. Whether the ATV is being used around a rural property, on a trail, at a hunting camp, or for general outdoor transportation, the racks provide useful carrying space without requiring a trailer for every small load.
The racks and front bumper feature wrinkle-paint finishes designed for durability and scratch resistance. Plastic skid plates add another layer of protection beneath the machine. Their lightweight construction helps keep unnecessary mass down while their slippery surface can help obstacles move beneath the ATV instead of catching aggressively underneath it.
That matters because utility ATV ownership often involves terrain that is less predictable than a groomed trail. Rocks, branches, ruts, mud and uneven ground can all place additional demands on the underside of an ATV.
The 2026 Suzuki KingQuad 400FSi is therefore designed to be practical before accessories are added, while remaining compatible with additional equipment for buyers who need more specialized capability.
Suzuki lists Genuine Suzuki Accessories such as winches, windshields, bumpers, snowplows, aluminum skid pans, rack extensions and utility boxes.
Utility performance is only useful if the rider can control the ATV comfortably.
Suzuki’s T-shaped seat is an important part of the 2026 Suzuki KingQuad 400FSi design. The shape allows rider movement during sport riding and difficult terrain while providing a supportive platform for longer periods in the saddle.
That rider mobility is especially useful when navigating changing terrain. A rider may need to shift body position while climbing, descending, turning or crossing uneven surfaces. The seating design supports that active riding style instead of locking the rider into one position.
The ATV also has a listed seat height of 33.1 inches, overall width of 45.1 inches and ground clearance of 9.8 inches. The 50.0-inch wheelbase contributes to the compact proportions expected from a utility-sport ATV.
The suspension system reinforces the multi-purpose character of the 2026 Suzuki KingQuad 400FSi.
Independent front A-arm suspension provides controlled wheel movement and 6.7 inches of wheel travel. At the rear, a swingarm suspension system provides another 6.7 inches of wheel travel, supported by twin shock absorbers. Suzuki describes the setup as providing agile handling and plush riding characteristics.
For practical riders, the benefit is versatility.
On hard-packed trails, the suspension can help maintain a composed ride. On uneven ground, the available wheel travel gives the chassis room to respond to changes in terrain. During utility work, the suspension contributes to a more controlled ride when the surface becomes rough.
The 2026 Suzuki KingQuad 400FSi also uses large 25-inch Carlisle tires with aggressive tread patterns. These tires are intended to provide traction across changing conditions while maintaining reasonable ride quality on hard-packed surfaces.
The front braking system uses dual hydraulic disc brakes with large 34mm pistons and broad brake-pad surface areas. This construction is intended to provide dependable stopping performance while supporting durability in demanding use.
Suzuki’s published specifications list twin front disc brakes and a single rear drum brake.
The result is a braking arrangement designed around the ATV’s mixed-use mission rather than pure recreational performance.
The 2026 Suzuki KingQuad 400FSi can make sense for buyers who want one ATV capable of serving several roles.
It is particularly suited to:
Suzuki specifies a minimum rider age of 16 years old for this model. Riders should follow local laws, use appropriate protective equipment and receive proper ATV training before operation.
At the center of the 2026 Suzuki KingQuad 400FSi is a 376cc four-stroke, four-valve, single-cylinder engine.
The engine uses Suzuki electronic fuel injection, electric starting and wet-sump lubrication. Suzuki’s official specifications identify an 82.0 mm bore, 71.2 mm stroke and 9.0:1 compression ratio.
The goal is not simply to make the largest possible engine. Instead, the 376cc platform gives the 2026 Suzuki KingQuad 400FSi a practical middle ground between manageable size and useful utility-sport performance.
Fuel injection is particularly valuable for everyday usability. Suzuki states that its fuel-injection system is designed to smooth power delivery, particularly through the mid- to high-range, while supporting cold starting and responsive operation.
For someone researching a 2026 Suzuki KingQuad 400FSi for sale, this means the engine is designed around more than peak output. It is about predictable response and usable performance.
Hard work can generate substantial heat, especially when an ATV is carrying cargo or working at lower speeds.
The 2026 Suzuki KingQuad 400FSi incorporates Suzuki Advanced Cooling System technology, including an oil cooler and thermostat-controlled cooling fan. Suzuki describes the system as helping shed engine heat during demanding work and cargo hauling.
This is a useful feature for buyers who expect their ATV to work rather than simply sit in a garage between occasional recreational rides.
Another interesting element of the 2026 Suzuki KingQuad 400FSi is the Engine Control Unit’s slip-control logic.
Suzuki states that the ECU can adjust fuel-injector duration and timing to improve rideability and grip in loose or slippery conditions.
This approach demonstrates how modern ATV electronics can complement mechanical traction systems. Rather than relying solely on throttle input, engine management can help produce smoother behavior when available traction changes.
One of the defining characteristics of the 2026 Suzuki KingQuad 400FSi is its five-speed transmission.
Suzuki’s 2026 product overview describes the model as having a five-speed manual-shift transmission with a semi-automatic clutch, giving riders the ability to select gears according to terrain and riding conditions. The published specification section lists a five-speed forward constant-mesh transmission with high/low range and reverse.
This makes the FSi particularly interesting for riders who want more direct control over gearing than a conventional fully automatic ATV provides.
Selecting the appropriate gear can help the rider adapt to different conditions. Lower gearing can be useful for controlled low-speed work and challenging terrain, while higher gears can be more appropriate for faster trail travel where permitted.
The drivetrain is another reason the 2026 Suzuki KingQuad 400FSi works well as a utility-sport ATV.
A handlebar-mounted lever allows the rider to select between 2WD and 4WD. The shaft-drive system is designed for dependable operation and reduced routine maintenance compared with more exposed final-drive arrangements.
Two-wheel drive can be useful for ordinary surfaces where maximum traction is unnecessary. Four-wheel drive provides additional traction when the terrain becomes loose, muddy, steep or otherwise demanding.
The torque-sensing limited-slip front differential is designed to provide traction while maintaining light steering characteristics in 4WD operation.
The high/low selectable sub-transmission expands the versatility of the 2026 Suzuki KingQuad 400FSi.
Low range can be useful when controlled torque and slower movement are priorities. High range can be more suitable for ordinary trail riding and general transportation.
This combination makes the ATV adaptable rather than specialized.
The LCD instrumentation on the 2026 Suzuki KingQuad 400FSi provides useful operating information in one location.
Suzuki lists:
That collection of information is valuable for both recreational riders and utility users because it provides a clearer picture of how the ATV is being operated and maintained.
Dual 35-watt headlights provide high- and low-beam functionality, while the front DC power outlet can support compatible accessories and electronic devices.
| Specification | 2026 Suzuki KingQuad 400FSi |
|---|---|
| Year | 2026 |
| Condition | New |
| Make | Suzuki |
| Model | KingQuad 400FSi |
| Vehicle Type | Utility Sport 400 |
| Color | Terra Green |
| Engine | 376cc four-stroke, OHC single-cylinder |
| Valvetrain | Four-valve |
| Fuel System | Suzuki electronic fuel injection |
| Starter | Electric |
| Lubrication | Wet sump |
| Transmission | 5-speed forward constant mesh |
| Clutch | Dry-shoe automatic centrifugal type / semi-automatic riding configuration |
| Reverse | Yes |
| Sub-Transmission | High/Low |
| Driven Wheels | 2WD / 4WD |
| Final Drive | Shaft drive |
| Front Suspension | Independent double wishbone |
| Rear Suspension | Swingarm |
| Front Wheel Travel | 6.7 in. / 170.1 mm |
| Rear Wheel Travel | 6.7 in. / 170.1 mm |
| Front Brakes | Twin hydraulic disc |
| Rear Brake | Single drum |
| Front Tires | AT25 x 8-12 tubeless |
| Rear Tires | AT25 x 10-12 tubeless |
| Fuel Capacity | 16.0 L / 4.2 U.S. gal. |
| Ground Clearance | 9.8 in. / 250 mm |
| Seat Height | 33.1 in. / 840 mm |
| Wheelbase | 50.0 in. / 1,270 mm |
| Overall Length | 81.1 in. / 2,060 mm |
| Overall Width | 45.1 in. / 1,145 mm |
| Overall Height | 48.0 in. / 1,220 mm |
| Curb Weight | 615 lb. / 279 kg |
| Warranty | 24-month limited warranty |
| Minimum Rider Age | 16 years |
Specifications are based on Suzuki’s published 2026 model information; always verify final equipment and specifications with the selling dealer before purchase.
The 2026 Suzuki KingQuad 400FSi is compelling because it does not force the buyer to choose between utility and recreational capability.
Its design combines a fuel-injected 376cc engine, selectable 2WD/4WD, five-speed transmission, high/low range, cargo racks, independent front suspension and substantial ground clearance.
For a buyer considering a 2026 Suzuki KingQuad 400FSi for sale, the biggest advantage may be its versatility.
You can use the ATV for property maintenance during the week and trail exploration on the weekend. You can carry equipment on its racks, change drivetrain settings according to terrain and use the high/low range to adapt the machine to different riding situations.
That flexibility is exactly what makes the utility-sport category attractive.
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There are several reasons the 2026 Suzuki KingQuad 400FSi deserves consideration.
The 376cc fuel-injected engine offers a useful balance of size, drivability and utility potential. It is substantial enough for many recreational and property-use scenarios without positioning the ATV as an oversized machine.
Selectable 2WD/4WD gives the rider an easy way to adapt traction to the conditions.
The five-speed transmission allows the rider to choose gears rather than relying entirely on an automatic CVT.
Heavy-duty front and rear steel racks make the ATV practical for carrying outdoor equipment and supplies.
Independent front suspension, swingarm rear suspension, 25-inch tires and 9.8 inches of ground clearance provide a strong foundation for mixed terrain.
Suzuki lists a 24-month limited warranty for the model. Longer coverage options and additional benefits may be available through Suzuki Extended Protection.
The 2026 Suzuki KingQuad 400FSi incorporates several features intended to support long-term ownership.
The shaft drive reduces exposure of the final-drive system to environmental contaminants. The steel racks use wrinkle-paint finishes designed to resist scratches. Plastic skid plates help protect the underside, while the suspension components are designed for repeated movement across uneven surfaces.
The cooling system is also important for durability because managing engine heat is essential during demanding operation. Suzuki’s SACS arrangement uses an oil cooler and thermostat-controlled fan to assist with heat management.
However, durability should never be interpreted as permission to neglect maintenance. Even a rugged ATV requires appropriate servicing, inspection and responsible operation.
Proper maintenance helps preserve the performance and condition of the 2026 Suzuki KingQuad 400FSi.
Owners should follow the maintenance schedule in the official owner’s documentation and have required service completed using the correct fluids, filters and replacement parts.
Important routine practices include:
Maintenance intervals depend on operating conditions and the manufacturer’s schedule. Severe use, mud, dust, water and frequent cargo hauling can justify more frequent inspections.
Protection begins with responsible operation.
The 2026 Suzuki KingQuad 400FSi should be operated only by riders who meet the applicable age and legal requirements. Suzuki specifies a minimum rider age of 16 for this model.
Protective equipment should include an appropriate helmet, eye protection, gloves, suitable riding clothing and appropriate boots. Riders should avoid alcohol or drugs, complete appropriate ATV safety training and follow local riding regulations.
The ATV should also be used only on terrain appropriate for its design and within the limits established by Suzuki and applicable law.
For additional equipment, Suzuki offers Genuine Suzuki Accessories, including winches, windshields, bumpers, snowplows, skid pans, rack extensions and utility boxes.
A new 2026 Suzuki KingQuad 400FSi purchase generally centers on the factory ATV and its standard equipment. Standard equipment includes the production Terra Green bodywork, factory engine and drivetrain, factory suspension, braking system, lighting, instrumentation, cargo racks and other model-standard components.
Optional accessories are not automatically included unless specifically stated in the sales listing or purchase agreement.
Potential accessories may include:
Suzuki identifies these as available Genuine Suzuki Accessories rather than standard equipment.
Before completing a purchase, buyers should confirm exactly what is included with the individual unit, including accessories, dealer-installed equipment, documentation, freight or destination charges and any other applicable fees.
If you are searching for a 2026 Suzuki KingQuad 400FSi for sale, it is important to distinguish the advertised ATV from optional equipment and dealer-specific pricing.
Suzuki’s official U.S. model page lists a $7,099 base MSRP plus a $600 destination charge for the 2026 KingQuad 400FSi at the time of the published information. Dealer pricing, taxes, registration, setup, freight, accessories and other charges can vary.
The best purchase decision should therefore be based on the complete out-the-door transaction rather than a single advertised figure.
For official manufacturer information, buyers can review Suzuki Cycles website.
Yes. The product information for this listing identifies the unit as New, model year 2026.
It uses a 376cc four-stroke, four-valve, single-cylinder engine with Suzuki electronic fuel injection and electric starting.
Yes. The model provides selectable 2WD and 4WD through a handlebar-mounted lever.
The FSi is distinguished by its five-speed transmission and rider-selectable gearing. Suzuki’s model overview describes it as a five-speed manual-shift transmission with a semi-automatic clutch, while the specification section identifies five forward constant-mesh speeds with high/low range and reverse.
The requested unit is Terra Green. Suzuki’s official 2026 page lists Terra Green among the available colors for the model.
The published specification lists 9.8 inches (250 mm) of ground clearance.
The fuel tank capacity is 16.0 liters, or 4.2 U.S. gallons.
The 2026 Suzuki KingQuad 400FSi uses a shaft final drive.
Suzuki lists a 24-month limited warranty for the 2026 KingQuad 400FSi. Longer coverage options and additional benefits may be available through Suzuki Extended Protection. Warranty terms should be confirmed with the selling dealer.
Suzuki specifies a minimum rider age of 16 years old for the model.
Yes. Its utility-oriented cargo racks, selectable 2WD/4WD and high/low gearing complement its sportier chassis and five-speed transmission, making it suitable for a broad range of outdoor applications when operated within manufacturer limits.
The 2026 Suzuki KingQuad 400FSi is a strong choice for buyers who want a versatile utility-sport ATV with practical working features and engaging trail manners. Its Terra Green styling gives it a distinctive appearance, while the cargo racks, skid plates, 25-inch tires and generous ground clearance emphasize its working credentials.
Underneath, the 376cc fuel-injected engine, five-speed transmission, 2WD/4WD drivetrain, high/low sub-transmission and shaft drive create a flexible mechanical package. The independent front suspension and swingarm rear suspension further support the machine’s ability to handle varied terrain.
For buyers comparing a 2026 Suzuki KingQuad 400FSi for sale, the appeal is ultimately its balance. It is not designed solely as a recreational sport quad or exclusively as a work machine. Instead, it occupies the useful middle ground where one ATV can handle property tasks, cargo hauling, trail riding and outdoor exploration.
Its 24-month limited warranty adds another layer of ownership confidence, while the availability of Genuine Suzuki Accessories allows buyers to tailor the machine toward specific needs.
When purchasing, confirm the exact VIN, model year, condition, included equipment, warranty terms, final pricing, taxes, destination or setup charges and availability with the authorized seller. With those details verified, the 2026 Suzuki KingQuad 400FSi offers a compelling combination of capable engineering, practical utility, confident trail performance and distinctive Suzuki character.
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