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Motorcycle Specs Database

Find motorcycle specs, compare models and choose smarter.

Search by brand, model or year across 44,149+ motorcycles. Compare power, displacement, weight, seat height and category before you buy.

Buying research guide

How to use motorcycle specs before buying

Motorcycle specs are most helpful when you compare several numbers together. Engine size gives a quick idea of the bike class, but weight, seat height, torque, brakes, wheelbase and fuel capacity often explain how practical a motorcycle may feel in daily use.

Start by searching a model, then open its full specs page. Check fit-related data such as seat height and weight, performance-related data such as power and torque, and ownership-related details such as fuel capacity, tyres and braking hardware. After that, use the comparison tool or advanced filter to find similar alternatives.

Fit and comfort
Seat height, weight and dimensions affect confidence, parking, traffic use and low-speed handling.
Performance context
Power, torque and displacement should be read together, not as isolated numbers.
Compare alternatives
Use similar models, brand pages and category filters to avoid choosing from one spec sheet alone.
Results

ajs motorcycles

177 bikes found

AJS

Model 8 350

1963
Sport 348.0 ccm (21.23 cubic inches) 21.0 HP (15.3 kW)) @ 6250 RPM 153.0 kg (337.3 pounds)
View full specs →
AJS

Model 14 250

1962
Sport 248.0 ccm (15.13 cubic inches) 17.0 HP (12.4 kW)) @ 7250 RPM 149.0 kg (328.5 pounds)
View full specs →
AJS

Model 16 350 Spectre

1962
Allround 348.0 ccm (21.23 cubic inches) 171.0 kg (377.0 pounds)
View full specs →
AJS

Model 16 350MS

1962
Allround 347.0 ccm (21.17 cubic inches) 18.0 HP (13.1 kW)) @ 5750 RPM 170.0 kg (374.8 pounds)
View full specs →
AJS

Model 18 500 Statesman

1962
Allround 498.0 ccm (30.39 cubic inches) 172.0 kg (379.2 pounds)
View full specs →
AJS

Model 31 650 Swift

1962
Allround 646.0 ccm (39.42 cubic inches) 31.4 HP (22.9 kW)) @ 6000 RPM 176.0 kg (388.0 pounds)
View full specs →
AJS

Model 8 350

1962
Sport 348.0 ccm (21.23 cubic inches) 21.0 HP (15.3 kW)) @ 6250 RPM 153.0 kg (337.3 pounds)
View full specs →
AJS

Model 14 250

1961
Sport 248.0 ccm (15.13 cubic inches) 17.0 HP (12.4 kW)) @ 7250 RPM 149.0 kg (328.5 pounds)
View full specs →
AJS

Model 16 350 Spectre

1961
Allround 348.0 ccm (21.23 cubic inches) 171.0 kg (377.0 pounds)
View full specs →
AJS

Model 16 350MS

1961
Allround 347.0 ccm (21.17 cubic inches) 18.0 HP (13.1 kW)) @ 5750 RPM 170.0 kg (374.8 pounds)
View full specs →
AJS

Model 18 500 Statesman

1961
Allround 498.0 ccm (30.39 cubic inches) 172.0 kg (379.2 pounds)
View full specs →
AJS

Model 31 650 Swift

1961
Allround 646.0 ccm (39.42 cubic inches) 31.4 HP (22.9 kW)) @ 6000 RPM 176.0 kg (388.0 pounds)
View full specs →
AJS

Model 8 350

1961
Sport 348.0 ccm (21.23 cubic inches) 21.0 HP (15.3 kW)) @ 6250 RPM 153.0 kg (337.3 pounds)
View full specs →
AJS

Model 14 250

1960
Sport 248.0 ccm (15.13 cubic inches) 17.0 HP (12.4 kW)) @ 7250 RPM 149.0 kg (328.5 pounds)
View full specs →
AJS

Model 16 350 Spectre

1960
Allround 348.0 ccm (21.23 cubic inches) 171.0 kg (377.0 pounds)
View full specs →
AJS

Model 16 350MS

1960
Allround 347.0 ccm (21.17 cubic inches) 18.0 HP (13.1 kW)) @ 5750 RPM 170.0 kg (374.8 pounds)
View full specs →
AJS

Model 18 500 Statesman

1960
Allround 498.0 ccm (30.39 cubic inches) 172.0 kg (379.2 pounds)
View full specs →
AJS

Model 31 650 Swift

1960
Allround 646.0 ccm (39.42 cubic inches) 31.4 HP (22.9 kW)) @ 6000 RPM 176.0 kg (388.0 pounds)
View full specs →
AJS

Model 8 350

1960
Sport 348.0 ccm (21.23 cubic inches) 21.0 HP (15.3 kW)) @ 6250 RPM 153.0 kg (337.3 pounds)
View full specs →
AJS

Model 16 350 Spectre

1959
Allround 348.0 ccm (21.23 cubic inches) 171.0 kg (377.0 pounds)
View full specs →
AJS

Model 16 350MS

1959
Allround 347.0 ccm (21.17 cubic inches) 18.0 HP (13.1 kW)) @ 5750 RPM 170.0 kg (374.8 pounds)
View full specs →
AJS

Model 20 500

1959
Allround 498.0 ccm (30.39 cubic inches) 20.0 HP (14.6 kW)) @ 6800 RPM 178.0 kg (392.4 pounds)
View full specs →
AJS

Model 31 650 Swift

1959
Allround 646.0 ccm (39.42 cubic inches) 31.4 HP (22.9 kW)) @ 6000 RPM 176.0 kg (388.0 pounds)
View full specs →
AJS

Model 16 350 Spectre

1958
Allround 348.0 ccm (21.23 cubic inches) 171.0 kg (377.0 pounds)
View full specs →
AJS

Model 16 350MS

1958
Allround 347.0 ccm (21.17 cubic inches) 18.0 HP (13.1 kW)) @ 5750 RPM 170.0 kg (374.8 pounds)
View full specs →
AJS

Model 20 500

1958
Allround 498.0 ccm (30.39 cubic inches) 20.0 HP (14.6 kW)) @ 6800 RPM 178.0 kg (392.4 pounds)
View full specs →
AJS

Model 16 350 Spectre

1957
Allround 348.0 ccm (21.23 cubic inches) 171.0 kg (377.0 pounds)
View full specs →
AJS

Model 16 350MS

1957
Allround 347.0 ccm (21.17 cubic inches) 18.0 HP (13.1 kW)) @ 5750 RPM 170.0 kg (374.8 pounds)
View full specs →
AJS

Model 20 500

1957
Allround 498.0 ccm (30.39 cubic inches) 20.0 HP (14.6 kW)) @ 6800 RPM 178.0 kg (392.4 pounds)
View full specs →
AJS

Model 30 600

1957
Allround 593.0 ccm (36.18 cubic inches) 33.0 HP (24.1 kW)) @ 6800 RPM 178.0 kg (392.4 pounds)
View full specs →

Comparing AJS Motorcycles Across Model Years & Segments

This AJS archive lists 177 indexed motorcycles with verified factory specifications. When researching a new or used AJS, pay close attention to generation updates across production years: manufacturers frequently revise fuel injection mapping, emission compliance, suspension valving, ABS braking hardware, curb weight and seat height between model years even when the model badge stays the same.

Open any AJS model card above to inspect complete engine, transmission, chassis and dimension tables, estimate annual fuel and maintenance costs, or shortlist two AJS generations in the side-by-side motorcycle comparison tool.

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