The Suzuki KingQuad 400FSi represents a pinnacle of utility and sport performance, continuing a legacy that began with one of the world's first four-wheel ATVs back in 1982. Today, whether tackling remote wilderness areas or handling rigorous everyday ranch work, this powerful model ensures riders can continue moving forward without compromise.

Unmatched Performance for Every Terrain: The KingQuad Advantage

The Suzuki KingQuad lineup is renowned across the industry for its exceptional blend of robust capability and refined performance. For those who demand a more spirited ride that pairs with serious utility, the 2025 Suzuki KingQuad 400FSi model delivers superior power management through its five-speed manual transmission paired with an efficient semi-automatic clutch system.

This highly capable ATV is engineered to provide impressive torque and maintain a wide operating powerband. This performance profile makes the KingQuad ideal for navigating challenging trails or performing demanding vocational tasks where consistent, reliable power from your utility quad is essential.

Advanced Engineering: Power and Efficiency Combined

Powerful 376cc Engine System

At the heart of this machine is a sophisticated fuel-injected, three-quarter liter (376cc), four-stroke engine. This robust powerplant delivers consistent, efficient power while maintaining exceptional drivability across all conditions. The inclusion of advanced features like the Pulsed-secondary AIR-injection (PAIR) system ensures outstanding fuel efficiency and clean emissions without sacrificing performance.

The combination of a high-performance iridium spark plug and modern electronic management systems guarantees that every ride is powerful, responsible, and reliable—key factors for any top-tier ATV purchase.

Optimized Drivetrain and Handling

• Transmission System: The five-speed transmission features a semi-automatic clutch with reverse capability. This gearing allows the rider to precisely select the optimal gear ratio needed to maximize both traction grip and fuel efficiency, regardless of load or terrain angle.
• Suspension & Chassis: Handling is managed by an independent front A-arm suspension system. This design provides smooth ride performance over rough ground while offering remarkable ground clearance with 6.7 inches (170.1 mm) of wheel travel. The rugged chassis structure ensures durability for demanding use.
• Instrumentation: Riders benefit from a comprehensive LCD instrumentation panel that displays critical metrics, including speed readout, distance traveled via the odometer and trip meter, engine hour count, fuel level gauge, and indicators for neutral, oil pressure, and fuel injection status.

Utility Ready Design & Customization

The KingQuad 400FSi is built not just for fun but for work. Its sporty yet rugged styling features sharply angled, high-clearance fenders that protect the vehicle while maintaining an aggressive look.

For maximum utility on any ranch or job site, the ATV includes full steel cargo racks designed to withstand heavy loads. Furthermore, a comprehensive range of genuine Suzuki Accessories is available for personalization and added functionality. These options include powerful winches, protective front and rear bumpers, snowplows for winter operations, aluminum skid pans, rack extensions, and utility storage boxes.

Summary of Key Features

• Model: 2025 Suzuki KingQuad 400FSi
• Engine Type: Fuel-injected, four-stroke (376cc)
• Transmission: Five-speed constant mesh with semi-automatic clutch and reverse.
• Suspension Focus: Independent front A-arm for smooth handling and high ground clearance.
• Capability: Ideal blend of trail performance and heavy utility work, making it a premier choice among ATVs today.