AJS Tempest Roadster 125 - 2020 Specifications and Reviews

The 2020 AJS Tempest Roadster 125 is an accessible, all-around commuter bike designed for new and budget-conscious riders. Its lightweight 124cc single-cylinder engine delivers modest but practical performance with a top speed of 96.6 km/h, making it ideal for city riding and short commutes. Known for affordability and reliability, it combines modern fuel injection with traditional air cooling and chain drive simplicity.

4 stars Average rating: 4 from 1 votes
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General information

CategoryAllround
Year2020
ModelAJS Tempest Roadster 125

Engine and Transmission Specifications

Exhaust systemStainless steel
Emission detailsEuro 4
ClutchWet, multiplate
Transmission typeChain   (final drive)
Gearbox5-speed
Cooling systemAir
Fuel controlOverhead Cams (OHC)
Fuel systemInjection
Bore x Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Top speed96.6 km/h (60.0 mph)
Torque9.5 Nm (1.0 kgf-m or 7.0 ft.lbs) @ 6500 RPM
Power9.5 HP (6.9 kW) @ 8500 RPM
Engine typeSingle cylinder, four-stroke
Capacity:124.0 ccm (7.57 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsAlloy wheel rims
Rear brakesSingle disc
Diameter300 mm (11.8 inches)
Front brakesSingle disc
Rear tire130/70-17
Front tire110/70-17
Rear SuspensionDual shocks
Front SuspensionTelescopic fork
Frame typeSteel

Physical measures and capacities

Fuel capacity16.00 litres (4.23 US gallons)
Wheelbase1330 mm (52.4 inches)
Overall width800 mm (31.5 inches)
Overall length2040 mm (80.3 inches)
Overall height1110 mm (43.7 inches)
Seat height780 mm (30.7 inches) If adjustable, lowest setting.
Power/weight ratio0.0768 HP/kg
Dry weight124.0 kg (273.4 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsSold in the UK.
Electrical12V
StarterElectric & kick
Color optionsOasis Blue, Silver Fox, Jet Black

Performance Profile & Rider Fit

9.5 hp
Peak Power
60 mph
Top Speed

Best For

Track5%
City85%
Cornering40%
Daily Riding70%
Touring20%
Passenger25%

Rider Profile

Best ForThis bike is ideal for brand-new riders, learners, and anyone riding on a 125cc license or restricted permit.
PurposeIt's built for easy commuting, urban errands, and learning the ropes rather than performance riding.
Rider FitIts low seat height and lightweight chassis make it very approachable for shorter or less physically strong riders.
CharacterA classic-styled, friendly roadster that prioritizes simplicity, low running costs, and confidence-inspiring manners over outright speed.
Not Ideal ForThis is not the right bike for experienced riders seeking motorway speed, long-distance touring comfort, or off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2020 AJS Tempest Roadster 125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 780mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2020 AJS Tempest Roadster 125, with a moderate knee angle of around 115 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 2020 AJS Tempest Roadster 125 is a stylish and versatile motorcycle that is perfect for both city commuting and weekend adventures. With its classic design and reliable performance, this roadster is a great choice for riders of all experience levels. The 125cc engine provides plenty of power for zipping around town, while the comfortable seating position and agile handling make it a joy to ride on winding country roads. Plus, the Tempest Roadster 125's fuel-efficient engine and affordable price make it an economical option for budget-conscious riders. AJS has done a fantastic job of blending classic style with modern performance in the 2020 Tempest Roadster 125. The attention to detail in the design, such as the retro-inspired fuel tank and chrome accents, gives this motorcycle a timeless appeal. The reliable performance and smooth handling make it easy to see why the AJS Tempest Roadster 125 is such a popular choice for riders looking for a stylish and capable roadster. Whether you're a new rider looking for a fun and affordable way to get around or an experienced rider in search of a reliable commuter, the 2020 AJS Tempest Roadster 125 is an excellent option to consider.
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