Built around CZ's allround motorcycle platform, the 1977 CZ 175 Trail features a 172 cc (10.5 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 15 HP (10.9 kW) at 5,600 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 87.2 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 175 Trail measures 128 kg (282 lbs) wet (curb), translating to a power-to-weight ratio of 0.12 HP/kg (8.53 kg per horsepower). The 11-liter (2.9 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 100 km/h (62 mph).
Within MotoLibrary's CZ archive, this model family spans 3 indexed model years from 1976 to 1978, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
87.2 HP/L
Power-to-Weight
0.12 HP/kg (8.53 kg/HP)
Engine
Displacement172.0 ccm (10.50 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power15.0 HP (10.9 kW)) @ 5600 RPM
Compression8.7:1
Bore x Stroke58.0 x 65.0 mm (2.3 x 2.6 inches)
Valves/Cylinder0
Fuel ControlPort control
LubricationSeparate lubrication with automatic oil pump
CoolingAir
Transmission
Gearbox4-speed
Final DriveChain (final drive)
ClutchMultiplate wet clutch in oil bath
DrivelineChain final drive
Chain Size520
Performance
Top Speed100.0 km/h (62.1 mph)
Wheels & Brakes
Front Tyre2.75-21
Rear Tyre3.50-18
Front BrakesExpanding brake
Rear BrakesExpanding brake
Dimensions & Weight
Weight incl.128.0 kg (282.2 pounds)
Fuel Capacity11.00 litres (2.91 US gallons)
Oil Capacity1.30 litres 2T reservoir / 0.80 L gearbox
Service & Fluids
Engine Oil2-stroke synthetic motorcycle oil (API TC / JASO FC/FD)
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.
