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Minibike, sport · 1986

BT-50

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MotoLibrary Score
34 /100 Commuter
Power
6 HP
Top Speed
85 km/h
Engine
49 ccm

1986 Tomos BT-50 Technical Analysis & Specification Breakdown

Built around Tomos's minibike, sport motorcycle platform, the 1986 Tomos BT-50 pairs a 49 cc (3 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 5.5 HP (4 kW) at 6,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive.

The 11.5-liter (3 US gal) fuel tank paired with a rated consumption of 4 L/100 km provides an estimated theoretical range of roughly 288 km (179 miles) between fill-ups, while factory top speed is listed at 85 km/h (53 mph).

Theoretical Range
~288 km (179 mi)
Engine
Displacement 49.0 ccm (2.99 cubic inches)
Engine Type Single cylinder, two-stroke
Engine Details Single cylinder, two-stroke
Power 5.5 HP (4.0 kW)) @ 6500 RPM
Fuel System Carburettor. Bing 17mm
Ignition Digital Iskra
Cooling Air
Max RPM 9000
Transmission
Gearbox 5-speed
Final Drive Chain (final drive)
Clutch wet plate
Performance
Top Speed 85.0 km/h (52.8 mph)
Fuel Consumption 4.00 litres/100 km (25.0 km/l or 58.81 mpg)
Greenhouse Gases 92.8 CO2 g/km. (CO2 - Carbon dioxide emission)
Exhaust Single steel pipe
Chassis
Frame Type Steel tubes
Wheels & Brakes
Front Tyre 4.0-17
Front Brakes Single disc. single piston caliper
Rear Brakes Expanding brake (drum brake)
Dimensions & Weight
Fuel Capacity 11.50 litres (3.04 US gallons)
Reserve Fuel 1.00 litres (0.26 US gallons)
Other
Color Options Red,grey,light blue
More from Tomos
Buying Checklist

Before You Compare This Bike

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.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏁
Best For
Sport & Track
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