2025 Suzuki KingQuad 400ASi Base

Current Suzuki ATV Utility-Sport KingQuad 400ASi

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Year 2025
Make Suzuki
Model KingQuad 400ASi
Engine 4-stroke, OHC single cylinder

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Product Details Specifications Photos

Year 2025
Manufacturer Suzuki
Model Name KingQuad 400ASi
Trim Name Base
Generic Type (Primary) Utility
Engine 4-stroke, OHC single cylinder
Displacement 376cc (22.94 cubic in.)
Cooling System Air-cooled with SCAS
Bore 82.0 mm (3.228 in.)
Stroke 71.2 mm (2.803 in.)
Compression Ratio 9.0:1
Fuel System Suzuki electronic fuel injection
Starter Electric
Lubrication Wet sump
Ignition Electronic ignition (transistorized)

2025 Suzuki KingQuad 400ASi

In 1982, Suzuki introduced the world's first four-wheel ATV. Today, Suzuki ATVs are everywhere. From the most remote areas to the most challenging tasks, you will find the KingQuad powering a rider onward. Across the board, the Suzuki KingQuad lineup is an exceptional group of ATVs.

Whether you are working hard or getting away from it all, the 2025 Suzuki KingQuad 400ASi helps you every step of the way. The fully automatic QuadmaticTM transmission has 2WD and 4WD modes to manage rough trail conditions while completing even the most demanding chores. Along with exceptional engine performance across the powerband, its high-performance iridium spark plug, and Pulsed-secondary AIR-injection (PAIR) system help provide outstanding fuel efficiency and impressive performance.

Features may include:

Engine

The KingQuad 400ASi’s fuel-injected, 376cc, four-stroke, four-valve engine produces efficient power and drivability.

Transmission

The QuadmaticTM transmission is a fully automatic, CVT (continuously variable transmission) with selectable high/low sub-transmission and reverse for maximum traction and fuel efficiency.

Chassis

Independent front A-arm suspension offers smooth performance and remarkable ground clearance with 6.7 inches (170.1 mm) of wheel travel.

Electrical

Dual 35-watt headlights (with high- and low-beam settings) are part of the distinctive KingQuad grille appearance. A bright taillight helps make the ATV visible in dark conditions.

Body & Styling

Sporty Flame Red or natural Terra Green bodywork features sharply angled, high-clearance fenders while the full steel cargo racks help tackle any outdoors task.

Additional

Suzuki’s 24-month limited warranty is much longer than other ATV warranties. Longer coverage and other benefits are available through Suzuki Extended Protection (SEP).

Engine

Engine 4-stroke, OHC single cylinder

Displacement 376cc (22.94 cubic in.)

Cooling System Air-cooled with SCAS

Bore 82.0 mm (3.228 in.)

Stroke 71.2 mm (2.803 in.)

Compression Ratio 9.0:1

Fuel System Suzuki electronic fuel injection

Starter Electric

Lubrication Wet sump

Ignition Electronic ignition (transistorized)

Drivetrain

Clutch Dry shoe, automatic, centrifugal type

Transmission Automatic variable ratio (V-belt), with high/low-range and reverse

Final Drive Shaft drive

Drive System 2WD and 4WD

Suspension

Front Suspension Independent, double wishbone, coil spring, oil damped

Rear Suspension Swing-arm type, coil spring, oil damped

Brakes

Front braking system Disc brakes, twin rotors

Rear braking system Single drum brake

Wheels & Tires

Front Tire AT25 x 8-12, tubeless type x 2

Rear Tire AT25 x 10-12, tubeless type x 2

Dimensions

Overall Length 2060 mm (81.1 in.)

Overall Width 1145 mm (45.1 in.)

Overall Height 1220 mm (48.0 in.)

Wheelbase 1270 mm (50.0 in.)

Ground Clearance 250 mm (9.8 in.)

Seat Height 840 mm (33.1 in.)

Capacities

Fuel Capacity 16.0 L (4.2 US gal.)

Weights

Curb Weight 265 kg (628 lb.)

Color

Colors Terra Green or Flame Red

Lights and Safety

Headlight Type 12V 35/35W (HS1) × 2

Tail Light 12V 21/5W

Warranty

Warranty 24-month limited warranty