43,669 bikes · 493 makes Add a bikeLog inRegister
Naked Motorcycles

2021Keeway RKS 125 Sport E4

Rate this bike
Click to vote

39 fields on record

The 2021 Keeway RKS 125 Sport E4 is a 125cc naked street bike for learner riders who want sporty looks on a budget. Its air-cooled single makes 11.3 hp, with a low 760 mm seat and a 16-litre tank.

Capacity
124.1 ccm
Engine
Single, four-stroke
Gearbox
5-speed
Dry weight
136.0 kg
Seat height
760 mm
Power
11.3 HP (8.2 kW) @ 8750 RPM
⇄ Compare with another bike + Add to garage All model years

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 25Agility 68Comfort 45Off-road 10Touring 30Road manners 55
Off-road & trail10%
Cornering55%
City riding75%
Daily riding65%
Touring25%
Two-up30%
Track20%
Best for
It's built primarily for commuting and learning the ropes of sporty riding at low cost and low risk, rather than genuine performance.
Built for
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.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 760mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2021 Keeway RKS 125 Sport E4, with a moderate knee angle of around 110 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

Find bikes that fit your height →

Full specifications

Engine
Capacity
124.1 ccm
Power
11.3 HP (8.2 kW) @ 8750 RPM
Torque
9.5 Nm (1.0 kgf-m) @ 7250 RPM
Engine type
Single, four-stroke
Power/weight ratio
0.0831 HP/kg (dry)
Bore x stroke
57.0 x 48.8 mm
Compression
10.6:1
Cooling system
Air
Fuel system
Carburettor
Starting
Electric
Ignition
TLI
Valves per cylinder
2
Lubrication system
Pressure splash
Transmission
Gearbox
5-speed
Transmission type
Manual
Final drive
Chain
Clutch
Wet, multiple-plate
Dimensions & weight
Wheelbase
1350 mm
Overall length
2090 mm
Overall width
760 mm
Overall height
1090 mm
Seat height
760 mm
Dry weight
136.0 kg
Fuel capacity
16.00 litres
Ground clearance
185 mm
Chassis & suspension
Frame
Arch bar truck
Front suspension
Telescopic fork
Rear suspension
Telescopic coil spring oil damped
Front wheel travel
110 mm
Rear wheel travel
30 mm
Brakes & wheels
Front brakes
Single disc
Front brakes diameter
260 mm
Rear brakes
Single disc
Rear brakes diameter
130 mm
Front tyre
90/90-17
Rear tyre
120/80-17
Other
Color options
White, black, red, grey
Warranty
24

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

Rider Reviews

—
☆☆☆☆☆
Be the first to rate
MotorcycleDB

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.

Own one? Add it to My Garage and write an owner review with an Owner badge.

Common questions

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

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

What engine power does the Keeway RKS 125 Sport E4 have?

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

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

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

What is the torque of the 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.

How much does the Keeway RKS 125 Sport E4 weigh?

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

Shop this bike

Affiliate links

We may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.

Similar bikes

Same category, weighted similarity

More Keeway Motorcycles