1972 Honda CB350 Four

1972 Honda CB350 Four

Honda released the 1972 Honda CB350 Four in 1972 with a 347cc SOHC inline-4 powerplant making 34hp — a definitive standard motorcycle.

Specifications

Engine

Type
SOHC inline-4
Displacement
347 cc
Cylinders
4
Power
34 hp @ 9500 rpm
Torque
28.0 Nm
Compression
Bore × Stroke
47.0 × 50.0 mm
Cooling
Air-cooled
Fuel System
4x Keihin carburetors

Chassis & Transmission

Frame
Steel double cradle
Front Suspension
Telescopic fork
Rear Suspension
Twin shock
Front Brake
Single disc
Rear Brake
Drum
Front Tyre
Rear Tyre
Transmission
5-speed
Final Drive
Chain

Performance

Top Speed
155 km/h (96 mph)
¼ Mile

Dimensions & Weight

Dry Weight
172 kg (379 lbs)
Wet Weight
185 kg (408 lbs)
Seat Height
790 mm
Wheelbase
1375 mm
Ground Clearance
Fuel Capacity
13.0 L

History & Story

The 1972 1972 Honda CB350 Four was introduced by Honda as a standard motorcycle aimed at riders seeking standard motorcycle performance and style. Manufactured in Japan, it represented Honda's vision for the four-cylinder standard motorcycle market during the 1970s.

At the heart of the 1972 Honda CB350 Four sits a 347cc SOHC inline-4 engine producing 34 horsepower at 9500 rpm. The four-cylinder powerplant features a four-cylinder layout with air-cooled cooling, fed by 4x Keihin carburetors. Power reaches the rear wheel through a 5-speed transmission and chain final drive.

The chassis employs a steel double cradle frame with telescopic fork up front and twin shock at the rear. Stopping power comes from single disc front and drum rear brakes. Tipping the scales at 172 kg (379 lbs) dry, the 1972 Honda CB350 Four offers a manageable riding experience with a 1375 mm wheelbase.

Performance-wise, the 1972 Honda CB350 Four achieves a claimed top speed of 155 km/h (96 mph). With a fuel capacity of 13.0 liters, it offers reasonable range for standard motorcycle duties. The seat height of 790 mm makes it comfortable for most riders.

Known Issues

  • Cam chain tensioner wear
  • Carb synchronization needed regularly
  • Charging system can be weak on early models

Fun Facts

  • The 1972 Honda CB350 Four was produced in Honda's Japan facilities
  • The 1972 Honda CB350 Four featured a steel double cradle frame typical of 1970s design philosophy

Collector Information

Parts Availability
Good
Collector Rating
6/10

Resources & Parts