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Touring · 1981

CB 400 T Hondamatic

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MotoLibrary Score
43 /100 Commuter
Power
27 HP
Top Speed
139 km/h
Engine
395 ccm

1981 Honda CB 400 T Hondamatic Technical Analysis & Specification Breakdown

Built around Honda's touring motorcycle platform, the 1981 Honda CB 400 T Hondamatic features a 395 cc (24.1 cu in) air-cooled twin, four-stroke configuration. In factory specification, peak output is rated at 27 HP (19.7 kW) at 8,000 rpm, transferring power to the rear wheel through a 2-speed automatic gearbox and chain final drive. With a specific output of 68.4 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the CB 400 T Hondamatic measures 189 kg (417 lbs) wet (curb), translating to a power-to-weight ratio of 0.14 HP/kg (7 kg per horsepower). The 12-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 139 km/h (86 mph).

Specific Output
68.4 HP/L
Power-to-Weight
0.14 HP/kg (7 kg/HP)
Engine
Displacement 395.0 ccm (24.10 cubic inches)
Engine Type Twin, four-stroke
Engine Details Twin, four-stroke
Power 27.0 HP (19.7 kW)) @ 8000 RPM
Compression 9.3:1
Bore x Stroke 70.5 x 50.6 mm (2.8 x 2.0 inches)
Valves/Cylinder 3
Fuel Control Overhead Cams (OHC)
Cooling Air
Transmission
Gearbox 2-speed automatic
Final Drive Chain (final drive)
Performance
Top Speed 139.0 km/h (86.4 mph)
Wheels & Brakes
Front Tyre 3.60-19
Rear Tyre 4.10-18
Front Brakes Single disc
Rear Brakes Expanding brake
Dimensions & Weight
Weight incl. 189.0 kg (416.7 pounds)
Fuel Capacity 12.00 litres (3.17 US gallons)
More from Honda
Buying Checklist

Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🗺️
Best For
Long Distance Touring
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