Back to Bike FinderYears: 1975 · 1974 · 1973 · 1972
Honda CB 450 disc
1972Classic

Honda CB 450 disc

Key specifications

Engine
445 cc
Power
45 HP
Fuel type
petrol
Fuel capacity
3.7 L
Transmission
5-speed
Front brakes
Single disc
Rear brakes
Expanding brake

Overview

Introducing the 1972 Honda CB 450 disc, a true classic in the naked bike category that perfectly encapsulates the spirit of early '70s motorcycling. Launched during a transformative period in the motorcycle industry, the CB 450 disc was Honda's answer to the rising demand for versatile, stylish, and reliable bikes that could deliver both performance and comfort. With its minimalist design and robust engineering, the CB 450 disc quickly gained a loyal following among riders looking for an engaging ride that didn't skimp on practicality. This iconic machine stands as a testament to Honda's innovative spirit and commitment to quality, making it a sought-after model for collectors and enthusiasts alike. At the heart of the CB 450 disc lies a spirited twin-cylinder, four-stroke engine with a displacement of 445cc. This powerplant delivers a thrilling 45 horsepower at a high-revving 9,000 RPM, allowing riders to experience the rush of acceleration as they approach its top speed of 171 km/h (106.3 mph). With a compression ratio of 9.0:1 and a well-balanced bore and stroke of 70.0 x 57.8 mm, the engine provides smooth and responsive performance across the rev range. The 5-speed gearbox ensures that shifting is precise and engaging, while the air-cooled system maintains optimal temperatures even during spirited rides. Whether cruising through town or taking on winding back roads, the CB 450 disc offers a satisfying balance of power and agility that keeps riders coming back for more. Noteworthy features of the 1972 Honda CB 450 disc include its pioneering single disc front brake, a technology that was cutting-edge for its time, providing improved stopping power and confidence for riders. The expanding brake at the rear complements this, ensuring reliable performance in various riding conditions. With a weight of 204 kg (449.7 pounds) and a fuel capacity of 14 liters (3.70 gallons), this motorcycle strikes an excellent balance between handling and endurance. Its timeless design, accentuated by clean lines and classic styling, is sure to turn heads on the road while offering a comfortable and ergonomic riding position for both novice and seasoned bikers alike. **

Pros

  • Strong Performance: The 445cc engine delivers an impressive 45 HP, offering exhilarating acceleration and a top speed that satisfies the thrill-seeker.
  • Innovative Braking System: The front disc brake provides advanced stopping power for its era, enhancing safety and confidence during rides.
  • Timeless Design: The classic styling and minimalist aesthetics make the CB 450 disc an appealing choice for both collectors and daily riders.

Cons

  • Weight: At 204 kg (449.7 pounds), it may feel a bit heavy for newer riders who are used to lighter modern bikes.
  • Limited Technology: Lacking some of the modern amenities found in contemporary bikes, such as advanced suspension and digital instrumentation.
  • Fuel Capacity: While the 14-liter tank allows for decent range, it may require more frequent stops on longer journeys compared to some of its competitors.

Technical details

Source specification data

Make
Honda
Model
CB 450 disc
Category
Naked bike
Power
45.00 HP (32.8 kW)) @ 9000 RPM
Gearbox
5-speed
Top Speed
171.0 km/h (106.3 mph)
Bore X Stroke
70.0 x 57.8 mm (2.8 x 2.3 inches)
Compression
9.0:1
Displacement
445.00 ccm (27.15 cubic inches)
Cooling System
Air
Engine Details
Twin, four-stroke
Valves Per Cylinder
2
Transmission Type Final Drive
Chain
Fuel Capacity
14.00 litres (3.70 gallons)
Weight Incl Oil Gas Etc
204.0 kg (449.7 pounds)
Rear Tyre
3.50-18
Front Tyre
3.25-18
Rear Brakes
Expanding brake
Front Brakes
Single disc