Back to Bike FinderYears: 1980 · 1979 · 1978 · 1976
CZ 350 Twin
1978Touring

CZ 350 Twin

Key specifications

Engine
343 cc
Power
22 HP
Fuel type
petrol
Fuel capacity
3.4 L
Transmission
4-speed
Front brakes
Expanding brake
Rear brakes
Expanding brake

Overview

Introducing the 1978 CZ 350 Twin, a remarkable motorcycle that embodies the spirit of cross-motocross riding in an era when performance and durability were paramount. Manufactured by the legendary Czech brand CZ, known for their robust engineering and competitive prowess, the 350 Twin was designed to cater to both budding enthusiasts and seasoned riders seeking an adventure on rugged terrains. With its lightweight build and agile handling, the 350 Twin carved out a niche in the motocross market, showcasing the brand's commitment to delivering reliable performance on and off the track. At the heart of the 1978 CZ 350 Twin lies a spirited 343cc twin-cylinder, two-stroke engine that pumps out an impressive 22 horsepower at 5,000 RPM. This powerplant, paired with a 4-speed gearbox, offers an exhilarating ride that can reach top speeds of 125 km/h (77.7 mph). The engine’s design features a compression ratio of 9.2:1 and a bore and stroke of 58.0 x 65.0 mm, allowing for quick throttle response and a thrilling acceleration that makes it a joy to ride. Air-cooled for simplicity and reliability, the 350 Twin excels in delivering a raw, visceral experience that harks back to the golden age of motocross. The CZ 350 Twin is equipped with a chassis designed for optimal performance on tough trails. Its weight, at 155 kg (341.7 lbs) with fluids, contributes to nimble handling and responsiveness in various conditions. The expanding brakes at both the front and rear provide reliable stopping power, allowing riders to confidently navigate steep descents and tight corners. With a fuel capacity of 13 liters (3.43 gallons), it offers just the right amount of range for a day of spirited riding or racing, ensuring that you spend more time on the track and less at the pump. **

Pros

  • Agile Handling: The lightweight design and well-balanced chassis make the 350 Twin highly maneuverable, perfect for both competitive motocross and leisure riding.
  • Simple Maintenance: The air-cooled, two-stroke engine and straightforward mechanical components allow for easy upkeep, making it a great choice for DIY enthusiasts.
  • Unique Character: The distinct sound and feel of the two-stroke twin provide an engaging riding experience that stands out in a market dominated by four-stroke machines.

Cons

  • Limited Power Output: While 22 HP is adequate for casual riding, it may fall short for riders seeking high-performance racing capabilities compared to modern competitors.
  • Basic Technology: The absence of advanced suspension and braking technologies may limit performance on more challenging terrains.
  • Fuel Consumption: As a two-stroke engine, it may consume fuel more rapidly than modern four-stroke bikes, requiring more frequent stops during long rides.

Technical details

Source specification data

Make
CZ
Model
350 Twin
Category
Cross-motocross
Power
22.00 HP (16.1 kW)) @ 5000 RPM
Gearbox
4-speed
Top Speed
125.0 km/h (77.7 mph)
Bore X Stroke
58.0 x 65.0 mm (2.3 x 2.6 inches)
Compression
9.2:1
Displacement
343.00 ccm (20.93 cubic inches)
Cooling System
Air
Engine Details
Twin, two-stroke
Transmission Type Final Drive
Chain
Fuel Capacity
13.00 litres (3.43 gallons)
Weight Incl Oil Gas Etc
155.0 kg (341.7 pounds)
Rear Tyre
3.50-18
Front Tyre
3.25-18
Rear Brakes
Expanding brake
Front Brakes
Expanding brake