2021 KingQuad 400FSi
2021 KingQuad 400FSi Overview
In 1983, Suzuki introduced the world's first 4-wheel ATV. Today, Suzuki ATVs are everywhere. From the most remote areas to the most everyday tasks, you'll find the KingQuad powering a rider onward. Across the board, our KingQuad lineup is an exceptional group of ATVs.
The Suzuki KingQuad 400FSi features a five-speed manual-shift transmission and semi-automatic clutch for those who favor a bit sportier performance. It cranks out an impressive amount of torque and has an incredibly wide powerband for exceptional performance on the trail or on the job. A high-performance...
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Powerful, fuel-injected, 4-stroke engine is easy on gas
Durable manual transmission with semi-automatic clutch
Select 2WD or 4WD via a handlebar-mounted lever
Large fuel tank and plush seat delivers extended, comfortable riding range
Rugged bodywork and full racks to tackle any task
The KingQuad 400FSi’s fuel-injected, 376cc, four-stroke, four-valve engine produces efficient power and driveablity.
Suzuki's class-leading fuel injection smooth’s power output, especially in the mid-to-high range, and provides excellent cold starting. The system uses 3-D maps for optimum ignition, creating responsive yet environmentally compliant performance.
Suzuki Advanced Cooling System (SACS) uses an oil cooler and thermostat-controlled cooling fan to shed engine heat during hard work or cargo hauling.
Push-button electric starting has a start-in-gear function—when the rear brake is applied—allowing starting without shifting to neutral (as conditions permit).
The Engine Control Unit (ECU) has slip control logic, which adjusts fuel injector duration and timing to improve drivability and grip in loose/slippery conditions.
Highly efficient iridium spark plug contributes to better combustion, cleaner emissions and longer plug life. Engine starting under low temperature is also improved.
Pulsed-secondary AIR-injection (PAIR) system and catalyst-equipped exhaust system help the ATV meet emission standards while maintaining a high level of performance (eligible for California red-sticker registration).
Five-speed transmission with semi-automatic clutch with reverse allows the rider to select the ideal gear for maximum traction and fuel efficiency.
Select 2WD or 4WD with the flip of a handlebar-mounted lever. The shaft drive system is reliable and durable and is nearly maintenance-free.
Torque-sensing limited-slip front differential provides maximum traction and light steering when in 4WD mode.
High/low selectable sub-transmission provides wide-ranging versatility.
Automotive gate-type gearshift lever lets you conveniently choose high or low range, neutral or reverse.
The ECU has a Reverse Mode that monitors vehicle speed, so higher engine rpm can be used when getting out of mud or loose soil in reverse mode.
The KingQuad 400FSi model's sporty bodywork features sharply angled, high-clearance fenders.
Suzuki's exclusive T-shaped seat delivers rider mobility during sport riding or tackling difficult terrain. It’s also plush for extended riding comfort.
Overall length is under 82 inches (208 cm), so the KingQuad fits into a 6.5-foot truck bed for easy transportation.
Independent front A-arm suspension offers smooth performance and remarkable ground clearance with 6.7 inches (170.1 mm) of wheel travel.
A swing-arm rear suspension with 6.7 inches (170.1 mm) of wheel travel and twin shock absorbers provides agile handling and plush riding.
Dual front hydraulic disc brakes feature calipers with large, 34mm pistons and wide brake-pad surface area for increased stopping power and outstanding durability.
Large, 25-inch Carlisle tires with aggressive tread offer consistent traction in wet conditions, yet make for a quiet, smooth ride on hard-packed trails.
The tires are mounted to rugged steel wheels powder-coated with a durable matte black finish.
Lightweight and strong plastic skid plates are sturdy to withstand trail pounding, yet slippery to let obstacles slide below.
Dual 35-watt headlights (with high and low settings) are part of the distinctive KingQuad grille appearance. Bright tail light helps make the ATV visible in dark conditions.
Heavy-duty front and rear cargo racks let you take advantage of the ATV’s superb load capabilities. Wrinkle paint finish on the racks and front bumper is durable and scratch resistant.
LCD instrumentation includes speedometer, odometer, trip meter, hour meter, clock, fuel gauge, and indicators for reverse, neutral, oil and FI (fuel injection).
Automotive-style DC power outlet is included on front fender.
Winch-ready mounts and wire conduit makes winch installation simple.
Large, 4.2 gallon (16.0 L) fuel tank provides outstanding riding range.
Full floorboards with integrated raised footpegs provide protection.
A variety of Suzuki Genuine Accessories are available, including winches, windshield, front and rear bumpers, snowplow, aluminum skid pans, rack extensions, utility box, and more.
12-month limited warranty. Longer coverage periods with other benefits available through Suzuki Extended Protection (SEP).*
*Subject to separate coverage for certain parts and the exclusions and limitations described in the New ATV Limited Warranty.
Minimum Operator Age: 16 Years Old
- Engine376cc (22.94 cubic in.), 4-stroke, air-cooled with SCAS, OHC single cylinder
- Bore x Stroke82.0 x 71.2 mm (3.228 in. x 2.803 in.)
- Compression Ratio9.0:1
- Fuel SystemSuzuki electronic fuel injection
- LubricationWet sump
- Transmission5-speed forward constant mesh, with high/low range and reverse
- ClutchDry shoe, automatic, centrifugal type
- Driven Wheels2WD and 4WD
- Final DriveShaft drive
- Suspension FrontIndependent, double wishbone, coil spring, oil damped
- Suspension RearSwingarm type, coil spring, oil damped
- Brakes FrontDisc brakes, twin rotors
- Brakes RearSingle drum brake
- Tires FrontAT25 x 8-12, tubeless type x 2
- Tires RearAT25 x 10-12, tubeless type x 2
- Fuel Tank Capacity16.0 L (4.2 US gal.)
- ColorTerra Green or Flame Red
- IgnitionElectronic ignition (transistorized)
- Headlight12V 35/35W (HS1) × 2
- Tail Light12V 21/5W
- Overall Length2060 mm (81.1 in.)
- Overall Width1145 mm (45.1 in.)
- Overall Height1220 mm (48.0 in.)
- Wheelbase1270 mm (50.0 in.)
- Ground Clearance250 mm (9.8 in.)
- Seat Height840 mm (33.1 in.)
- Curb Weight279 kg (615 lb.)
- Warranty12-month limited warranty
- ExtensionLonger coverage periods with other benefits are available through Suzuki Extended Protection (SEP)