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Classic · 1971

A 75 Rocket 3

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MotoLibrary Score
53 /100 Balanced
Power
58 HP
Top Speed
185 km/h
Engine
740 ccm

1971 BSA A 75 Rocket 3 Key Specifications & Summary

The 1971 BSA A 75 Rocket 3 is a classic motorcycle manufactured by BSA, equipped with a 740.0 ccm (45.15 cubic inches) displacement unit (In-line three, four-stroke) with air cooling. In factory trim, the engine delivers a rated power of 58.0 HP (42.3 kW)) @ 7500 RPM, paired with a 4-speed transmission and chain (final drive) final drive.

For rider ergonomics and real-world handling, key chassis measurements include a curb weight of 226.0 kg (498.2 pounds), fuel capacity of 19.00 litres (5.02 US gallons). Review the complete factory specification tables below to evaluate engine internals, suspension travel, braking hardware, tyre sizes and ownership estimates, or compare the 1971 BSA A 75 Rocket 3 side by side against rival models in the Classic lineup.

Engine
Displacement 740.0 ccm (45.15 cubic inches)
Engine Type In-line three, four-stroke
Engine Details In-line three, four-stroke
Power 58.0 HP (42.3 kW)) @ 7500 RPM
Compression 9.5:1
Bore x Stroke 67.0 x 70.0 mm (2.6 x 2.8 inches)
Valves/Cylinder 2
Fuel Control Overhead Valves (OHV)
Cooling Air
Transmission
Gearbox 4-speed
Final Drive Chain (final drive)
Performance
Top Speed 185.0 km/h (115.0 mph)
Wheels & Brakes
Front Tyre 4.00-19
Rear Tyre 4.00-19
Front Brakes Expanding brake
Rear Brakes Expanding brake
Dimensions & Weight
Weight incl. 226.0 kg (498.2 pounds)
Fuel Capacity 19.00 litres (5.02 US gallons)
More from BSA
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?

🟡
Intermediate
Requires some riding experience.
🏍️
Best For
General Purpose
100 ? 600 : hp > 50 ? 400 : 250; return Math.round(base + (this.km / 10000) * 150); }, get insuranceCost() { const hp = 58; return Math.round(hp > 100 ? 800 : hp > 50 ? 500 : 300); }, get total() { return this.fuelCost + this.maintenanceCost + this.insuranceCost; }, get monthly() { return Math.round(this.total / 12); } }">
Estimate

Ownership Cost Calculator

⛽ Fuel
per year
🔧 Maintenance
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🛡️ Insurance
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TOTAL

* Estimates only. Actual costs vary by country, riding habits, insurance provider and maintenance schedule.

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