The first model of the Honda VF400F (NC13) was a "Naked style" motorcycle

Motorcycle

A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions.Motorcycles are one of the most...

 with bikini-cowling which looked like a MVX250. It had a 400 cc V4 engine

V4 engine

A V4 engine is a V form engine with four cylinders and three main bearings.-Automobile use:Lancia produced several narrow-angle V4 engines from the 1920s through 1960s for cars like the Lambda, Augusta, Artena, Aprilia, Ardea, Appia, and Fulvia....

and was produced in 1982 and 1983. Notable features were the inboard ventilated disc brakes, Honda's TRAC (torque reactive anti dive control) system and air assisted front & rear suspension.

Engine

Type: 399 cc, V4, 16valve, 4-stroke

Cooling: Liquid

Bore x Stroke: 55 mm x 42 mm

Compression Ratio: 11:1

Power: 55.5 hp (41.4 kW) @ 12500 rpm

Torque: 35.5 Nm (26.2 ft·lbf) @ 10500 rpm

Transmission: 6 speed

Wheels

Front Tire: 100/90-16

Rear Tire: 110/90-18

Front Brakes: Single inboard ventilated disc

Rear Brakes: Single inboard ventilated disc

Dimensions

Length: 2060 mm (81.1 inches)

Width: 750 mm (29.5 inches)

Height: 1160 (45.7 inches)

Seat Height: 780 mm (30.7 inches)

Wheelbase: 1415 mm (55.7 inches)

Ground Clearance: 160 mm (6.3 inches)

Fuel Capacity: 17 l (35.9 US pt)

Dry Weight: 173 kg (381.4 pounds)