Suzuki KingQuad 400ASi specifications
Suzuki · Utility
The ASi is the automatic. The FSi has a five-speed with a semi-automatic clutch. Both list the same 376cc engine, the same 33.1 in seat, the same 9.8 in of ground clearance and the same $7,099 price.
Suzuki KingQuad 400ASi
| Specification | Value |
|---|---|
| Model year | 2026 |
| Engine | 4-stroke, air-cooled with SCAS, OHC single cylinder |
| Displacement | 376cc |
| Bore x stroke | 82.0x71.2 mm |
| Compression ratio | 9.0:1 |
| Drive system | 2WD and 4WD, shaft drive |
| Front suspension | Independent double wishbone, coil spring, oil damped |
| Rear brake | Single drum brake |
| Seat height | 33.1 in (840mm) |
| Wheelbase | 50.0 in (1270mm) |
| Ground clearance | 9.8 in (250mm) |
| Fuel capacity | 4.2 gal (16.0 L) |
| Starting MSRP | $7,099 |
| Destination charge | $600 |
| Class | Utility |
| Fuel system | Suzuki electronic fuel injection |
| Transmission | Automatic variable ratio (V-belt), with high/low-range and reverse |
| Front brake | Disc brakes, twin rotors |
| Front tire | AT25x8-12, tubeless |
| Rear tire | AT25x10-12, tubeless |
| Rear suspension | Swing-arm type, coil spring, oil damped |
| Curb weight (265kg) | 628 lb |
2026 Suzuki KingQuad 400FSi: equipment and specifications
The KingQuad 400FSi is the manual-shift version of Suzuki's mid-size utility ATV, with a five-speed semi-automatic clutch gearbox that ATV Trail Rider calls one of the last still on the market.
ATVpedia says Suzuki does not publish US horsepower or towing and rack ratings on the current model page, that 26 hp is a catalog estimate and that towing is not rated, and it presents the KingQuad 500AXi as a different kind of step up that adds displacement, independent rear suspension and a published towing rating at a higher price. ATV Trail Rider says the 400 is well adapted to long trail rides thanks to its T-shaped seat, as comfortable as the KingQuad 750's, and that the F400F is equipped with a five-speed transmission with semi-automatic clutch, one of the last still available.
How the ASi differs from the FSi
Electrical faults are the reported issue, so check the lights, the starter and the gauge display. Test 2WD, 4WD and reverse. Listen for belt noise in the CVT.
Check the shaft drive for play. Ask when the belt was last replaced. Look at the tires and the brakes.
That is a fair price for a shaft-drive machine with selectable four-wheel drive, and it leaves room in a work budget for a winch or a front bumper. Registration and insurance rules for ATVs vary by state, so check them before buying.
A used 400ASi is worth comparing, since the machine has changed little between model years.
The 400ASi suits an owner who wants a simple, easy-to-operate, mid-size ATV for chores and trails and prefers an automatic.
KingQuad 400ASi against the Rancher 4x4 and Kodiak 450
Honda's Rancher 4x4 and Yamaha's Kodiak 450 EPS are the closest mid-size utility rivals.
Suzuki · Utility
The KingQuad 400ASi is Suzuki's mid-size automatic utility ATV, a 376cc machine with selectable 2WD and 4WD and a shaft drive. Wild Ride ATV says a common owner complaint is electrical issues, and Suzuki asks $7,099; 2026 Suzuki KingQuad 400ASi specifications and price.
What owners say
Wild Ride ATV says one common problem reported by some KingQuad 400ASi owners is electrical issues. While calling it a popular choice among outdoor enthusiasts with a robust engine and reliable performance. ATV Trail Rider explains the model naming: the F400A version has a CVT automatic transmission and the F400F a five-speed with semi-automatic clutch, one of the last still available on the market.
The same source also says the T-shaped seat suits long trail rides and is as comfortable as that of the KingQuad 750.
How the ASi differs from the FSi
The ASi is the automatic. The FSi has a five-speed with a semi-automatic clutch. Both list the same 376cc engine, the same 33.1 in seat, the same 9.8 in of ground clearance and the same $7,099 price. So the choice is entirely about how you want to change gears. An automatic suits a rider who wants to concentrate on terrain and load. The manual gearbox gives more engine braking and control on steep descents.
Buying notes
Electrical faults are the reported issue, so check the lights, the starter and the gauge display. Test 2WD, 4WD and reverse. Listen for belt noise in the CVT. Check the shaft drive for play. Ask when the belt was last replaced. Look at the tires and the brakes.
What it costs to put on the ground
That is a fair price for a shaft-drive machine with selectable four-wheel drive, and it leaves room in a work budget for a winch or a front bumper. Add a helmet, gloves, eye protection and boots. Registration and insurance rules for ATVs vary by state, so check them before buying. A used 400ASi is worth comparing, since the machine has changed little between model years.
Who it suits
The 400ASi suits an owner who wants a simple, easy-to-operate, mid-size ATV for chores and trails and prefers an automatic. It is not the choice for heavy towing, since ATVpedia says Suzuki publishes no towing rating for the closely related 400FSi.
KingQuad 400ASi against the Rancher 4x4 and Kodiak 450.
Honda's Rancher 4x4 and Yamaha's Kodiak 450 EPS are the closest mid-size utility rivals.
- Model-year range
- 2024–2027
- Compared editions
- 4
- Specification entries
- 25
- Entries that differ
- 0
2026 Suzuki KingQuad 400ASi questions
What is the difference between the KingQuad 400ASi and 400FSi?
ATV Trail Rider says the F400A has a CVT automatic and the F400F a five-speed with a semi-automatic clutch. The engine and price are the same.
What problems do KingQuad 400ASi owners report?
Wild Ride ATV says one common problem reported by some owners is electrical issues, so check the wiring and starter on a used one.
Is the KingQuad 400ASi shaft driven?
Yes. Suzuki lists selectable 2WD and 4WD with a shaft drive, which avoids a chain and reduces routine adjustment.
- Model-year range
- 2026–2027
- Compared editions
- 2
- Specification entries
- 25
- Entries that differ
- 0
Other models in this reference: Suzuki KingQuad 500AXi Power Steering, Suzuki QuadSport Z90, Suzuki KingQuad 750AXi.