Positioned in MZ's sport motorcycle lineup, the 2005 MZ RT 125 features a 124 cc (7.6 cu in) single cylinder, four-stroke configuration. In factory specification, peak output is rated at 11 HP (8 kW) at 9,000 rpm while maximum torque reaches 11.7 Nm (8.6 lb-ft) at 8,500 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 88.7 HP per liter and a 500 rpm working window between peak torque (8,500 rpm) and peak power (9,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the RT 125 measures 133 kg (293 lbs) dry, translating to a power-to-weight ratio of 0.08 HP/kg (12.09 kg per horsepower). Rider ergonomics and chassis geometry center around a 770 mm (30.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,355 mm (53.3 in) wheelbase engineered for quick, flickable steering geometry. The 12.5-liter (3.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 108 km/h (67 mph).
Within MotoLibrary's MZ archive, this model family spans 3 indexed model years from 2001 to 2005, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
88.7 HP/L
Power-to-Weight
0.08 HP/kg (12.09 kg/HP)
Power Band Window
8,500–9,000 rpm
Standover Height
770 mm (30.3 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power11.0 HP (8.0 kW)) @ 9000 RPM
Torque11.7 Nm (1.2 kgf-m or 8.6 ft.lbs) @ 8500 RPM
Valves/Cylinder4
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
Transmission
Final DriveChain (final drive)
Performance
Top Speed108.0 km/h (67.1 mph)
Chassis
Front SuspensionTelescopic fork
Rear SuspensionRear monoshock
Wheelbase1355 mm (53.3 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre130/70-17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight133.0 kg (293.2 pounds)
Power/Weight0.0827 HP/kg
Seat Height770 mm (30.3 inches) If adjustable, lowest setting.
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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
