What category is the 2021 Keeway RKS 125 E4?

The 2021 Keeway RKS 125 E4 has a Category of Sport.

What is the engine size of the 2021 Keeway RKS 125 E4?

The 2021 Keeway RKS 125 E4 has a Capacity: of 124.1 ccm (7.57 cubic inches).

What type of engine does the 2021 Keeway RKS 125 E4 have?

The 2021 Keeway RKS 125 E4 has a Engine type of Single cylinder, four-stroke.

What is the engine power of the 2021 Keeway RKS 125 E4?

The 2021 Keeway RKS 125 E4 has a Power of 11.4 HP (8.3 kW) @ 9000 RPM.

What is the torque of the 2021 Keeway RKS 125 E4?

The 2021 Keeway RKS 125 E4 has a Torque of 9.2 Nm (0.9 kgf-m or 6.8 ft.lbs) @ 7500 RPM.

Is the 2021 Keeway RKS 125 E4 air cooled or liquid cooled?

The 2021 Keeway RKS 125 E4 has a Cooling system of Air.

How many gears does the 2021 Keeway RKS 125 E4 have?

The 2021 Keeway RKS 125 E4 has a Gearbox of 5-speed.

How much does the 2021 Keeway RKS 125 E4 weigh?

The 2021 Keeway RKS 125 E4 has a Dry weight of 132.0 kg (291.0 pounds).

What is the seat height of the 2021 Keeway RKS 125 E4?

The 2021 Keeway RKS 125 E4 has a Seat height of 760 mm (29.9 inches) If adjustable, lowest setting..

Keeway RKS 125 E4 - 2021 Specifications and Reviews

Name: 2021 Keeway RKS 125 E4
Brand: Keeway

The 2021 Keeway RKS 125 E4 is an entry-level sport bike designed for novice and budget-conscious riders seeking an affordable introduction to motorcycling. Its 124cc single-cylinder engine delivers modest but adequate power for city commuting and casual riding. Known for its sporty styling and accessible price point, it appeals primarily to young riders and those transitioning from scooters.

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General information
Category	Sport
Year	2021
Model	Keeway RKS 125 E4
Engine and Transmission Specifications
Transmission type	Chain (final drive)
Gearbox	5-speed
Cooling system	Air
Lubrication system	Pressure splash
Ignition	TLI
Fuel control	Single Overhead Cams (SOHC)
Fuel system	Carburettor
Valves per Cylinder	2
Bore x Stroke	57.0 x 48.8 mm (2.2 x 1.9 inches)
Compression	10.6:1
Torque	9.2 Nm (0.9 kgf-m or 6.8 ft.lbs) @ 7500 RPM
Power	11.4 HP (8.3 kW) @ 9000 RPM
Engine type	Single cylinder, four-stroke
Capacity:	124.1 ccm (7.57 cubic inches)

Brakes, suspension, Frame and wheels
Rear brakes	Single disc
Diameter	260 mm (10.2 inches)
Front brakes	Single disc
Rear tire	100/80-17
Front tire	90/90-17
Rear wheel travel	60 mm (2.4 inches)
Rear Suspension	Telescopic coil spring oil damped
Front wheel travel	110 mm (4.3 inches)
Front Suspension	Telescopic fork
Frame type	Arch bar truck

Physical measures and capacities
Fuel capacity	16.00 litres (4.23 US gallons)
Wheelbase	1290 mm (50.8 inches)
Ground clearance	185 mm (7.3 inches)
Overall width	760 mm (29.9 inches)
Overall length	2050 mm (80.7 inches)
Overall height	1065 mm (41.9 inches)
Seat height	760 mm (29.9 inches) If adjustable, lowest setting.
Power/weight ratio	0.0864 HP/kg
Dry weight	132.0 kg (291.0 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty	2 years
Starter	Electric
Color options	White, black, red, grey

Performance Profile & Rider Fit

11.4 hp

Peak Power

Best For

Track20%

City70%

Cornering45%

Daily Riding65%

Touring25%

Passenger30%

Rider Profile

Best For	Best suited to beginner riders or those just off a learner license, thanks to its small displacement and modest power output.
Purpose	Designed as an affordable, sporty-styled commuter for city streets rather than a genuine performance machine.
Rider Fit	A low seat height and light overall weight make it easy for shorter or less experienced riders to manage at a stop and in traffic.
Character	Feels like a nimble, entry-level sportbike with playful low-speed handling but limited outright grunt.
Not Ideal For	Not a good fit for experienced riders seeking real highway speed, long-distance touring comfort, or any off-road capability.

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

Rider Fit Visualizer

2021 Keeway RKS 125 E4 Rider Ergonomics Assessment

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Feet:

At 760mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 Keeway RKS 125 E4, with a cramped knee angle of around 65 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

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MotorcycleDB Review

The 2021 Keeway RKS 125 E4 motorcycle is a sleek and stylish option for those in the market for a reliable and efficient bike. Equipped with a powerful 125cc engine and E4 emissions compliance, this motorcycle offers a smooth and responsive ride. The ergonomic design of the RKS 125 E4 ensures comfort for riders of all sizes, making it a great choice for daily commutes or weekend adventures. The modern features and attractive price point make this Keeway motorcycle a standout option in its class. Overall, the 2021 Keeway RKS 125 E4 motorcycle is a strong contender for anyone seeking a reliable and affordable bike. With its impressive performance capabilities and stylish design, this motorcycle offers a great value for riders of all experience levels. Whether you're a seasoned rider or a beginner looking for a dependable way to get around, the RKS 125 E4 is definitely worth considering for your next motorcycle purchase.