Positioned in Bultaco's classic motorcycle lineup, the 1963 Bultaco Tralla 102 pairs a 125 cc (7.6 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 15 HP (10.9 kW) at 7,500 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 120 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Tralla 102 measures 95 kg (209 lbs) dry, translating to a power-to-weight ratio of 0.16 HP/kg (6.33 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,305 mm (51.4 in) wheelbase engineered for quick, flickable steering geometry. The 12-liter (3.2 US gal) fuel tank paired with a rated consumption of 2 L/100 km provides an estimated theoretical range of roughly 600 km (373 miles) between fill-ups, while factory top speed is listed at 115 km/h (71 mph).
Specific Output
120 HP/L
Power-to-Weight
0.16 HP/kg (6.33 kg/HP)
Theoretical Range
~600 km (373 mi)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power15.0 HP (10.9 kW)) @ 7500 RPM
Valves/Cylinder2
Fuel SystemCarburettor. Amal 376/25
Ignitionstroke
CoolingAir
Max RPM9000
Transmission
Gearbox4-speed
Final DriveChain (final drive)
ClutchWet Plate
Performance
Top Speed115.0 km/h (71.5 mph)
Fuel Consumption2.00 litres/100 km (50.0 km/l or 117.61 mpg)
Greenhouse Gases46.4 CO2 g/km. (CO2 - Carbon dioxide emission)
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.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
