What category is the 2021 Keeway RKS 125 Sport E4?

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

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

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

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

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

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

The 2021 Keeway RKS 125 Sport E4 has a Power of 11.3 HP (8.2 kW) @ 8750 RPM.

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

The 2021 Keeway RKS 125 Sport E4 has a Torque of 9.5 Nm (1.0 kgf-m or 7.0 ft.lbs) @ 7250 RPM.

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

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

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

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

How much does the 2021 Keeway RKS 125 Sport E4 weigh?

The 2021 Keeway RKS 125 Sport E4 has a Dry weight of 136.0 kg (299.8 pounds).

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

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

Keeway RKS 125 Sport E4 - 2021 Specifications and Reviews

Name: 2021 Keeway RKS 125 Sport E4
Brand: Keeway

The 2021 Keeway RKS 125 Sport E4 is an entry-level sportbike designed for new and budget-conscious riders seeking an affordable introduction to sport riding. Powered by a modest 11.3 horsepower single-cylinder four-stroke engine, it delivers nimble handling and fuel efficiency ideal for city commuting and weekend sport riding. Known for its accessible price point and practical performance, it suits riders prioritizing cost-effectiveness over outright power.

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2021

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General information
Category	Sport
Year	2021
Model	Keeway RKS 125 Sport 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	Injection
Valves per Cylinder	2
Bore x Stroke	57.0 x 48.8 mm (2.2 x 1.9 inches)
Compression	10.6:1
Torque	9.5 Nm (1.0 kgf-m or 7.0 ft.lbs) @ 7250 RPM
Power	11.3 HP (8.2 kW) @ 8750 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	120/80-17
Front tire	90/90-17
Rear wheel travel	30 mm (1.2 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	1350 mm (53.1 inches)
Ground clearance	185 mm (7.3 inches)
Overall width	760 mm (29.9 inches)
Overall length	2090 mm (82.3 inches)
Overall height	1090 mm (42.9 inches)
Seat height	760 mm (29.9 inches) If adjustable, lowest setting.
Power/weight ratio	0.0828 HP/kg
Dry weight	136.0 kg (299.8 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

11.3 hp

Peak Power

Best For

Track20%

City75%

Cornering55%

Daily Riding65%

Touring25%

Passenger30%

Rider Profile

Best For	This bike suits beginner riders or those looking for a light, non-intimidating first sportbike-styled machine.
Purpose	It's built primarily for commuting and learning the ropes of sporty riding at low cost and low risk, rather than genuine performance.
Rider Fit	Its low seat height and light overall weight make it accessible and manageable for shorter or less experienced riders.
Character	It has a small-displacement single-cylinder engine that delivers modest, predictable power with sport-inspired styling rather than genuine speed.
Not Ideal For	It's not suited for experienced riders seeking real power, 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 Sport 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 Sport 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

Total comments: 1

MotorcycleDB Review

The 2021 Keeway RKS 125 Sport E4 is a stylish and affordable option for motorcycle enthusiasts. With a sleek design and powerful engine, this bike is perfect for urban commuting and weekend rides. The sporty aesthetic combined with its comfortable handling make it a great choice for riders of all experience levels. Additionally, the E4 model is equipped with modern features such as LED lighting, digital display, and front disc brake for added safety and convenience. Overall, the 2021 Keeway RKS 125 Sport E4 is a top contender in the 125cc motorcycle market. Its combination of performance, style, and affordability make it a great choice for riders looking for a reliable and fun bike. Whether you're a beginner looking for your first motorcycle or a seasoned rider seeking a practical and efficient option for daily commuting, the RKS 125 Sport E4 is worth considering. With its advanced features and eye-catching design, this bike offers exceptional value for motorcycle enthusiasts.