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 Quadmatic™ 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.
KEY FEATURES
The KingQuad 400ASi’s fuel-injected, 376cc, four-stroke, four-valve engine produces efficient power and drivability.
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.
Independent front A-arm suspension offers smooth performance and remarkable ground clearance with 6.7 inches (170.1 mm) of wheel travel.
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.
Suzuki’s plush T-shaped seat delivers rider mobility during sport or difficult terrain riding. Overall length is under 82 inches (208 cm), so the KingQuad fits into a 6.5-foot truck bed for easy transportation.
A variety of Genuine Suzuki Accessories are available, including winches, windshield, front and rear bumpers, snowplow, aluminum skid pans, rack extensions, utility box, and more.
SPECS
ENGINE
Engine: 376cc (22.94 cubic in.), 4-stroke, air-cooled with SCAS, OHC single cylinder
Bore x Stroke: 82.0 mm x 71.2 mm (3.228 in. x 2.803 in.)
Compression Ratio: 9.0:1
Fuel System: Suzuki electronic fuel injection
Starter: Electric
Lubrication: Wet sump
DRIVETRAIN
Transmission: Automatic variable ratio (V-belt), with high/low-range and reverse
