Motocross Bikes
2021KTM SX-E 5
24 fields on record
The 2021 KTM SX-E 5 is an electric minicross bike for young riders learning off-road skills on a quiet, low-maintenance machine. It makes 6.7 hp and 13.8 Nm, with an adjustable 665 mm seat and a 40 kg weight.
- Capacity
- Not on record
Know it? Add it → - Engine
- Not on record
Know it? Add it → - Gearbox
- Not on record
Know it? Add it → - Wet weight
- 40.5 kg
- Seat height
- 665 mm
- Power
- 6.7 HP (4.9 kW) @ 3900 RPM
What’s new for the 2021 KTM SX-E 5
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Power | 6.7 HP (5.0 kW) @ 3200 RPM | 6.7 HP (4.9 kW) @ 3900 RPM |
| Rear suspension | XACT WP mono shock | WP Xplor PDS shock absorber |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Designed purely for kids' motocross practice and skill development on dirt tracks, not for road or general recreational use.
- Built for
- Quiet, low-maintenance, and instantly controllable thanks to its electric motor and multiple ride modes, letting young riders progress at a safe pace.
- Not ideal for
- Not suitable for adults, road use, touring, or anyone seeking real speed or long-distance 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 usEngine
- Power
- 6.7 HP (4.9 kW) @ 3900 RPM
- Torque
- 13.8 Nm (1.4 kgf-m)
- Power/weight ratio
- 0.1654 HP/kg (wet)
- Cooling system
- Air
- Starting
- Electric
- Motor Type
- Permanent Magnet motor
- Capacity:
- Not on record - add it
Transmission
- Transmission type
- Automatic
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 1028 mm
- Seat height
- 665 mm
- Wet weight
- 40.5 kg
- Ground clearance
- 252 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Chrome-molybdenum steel central-tube frame
- Front suspension
- XACT 35 WP Upside-Down fork, Ø 35 mm
- Rear suspension
- WP Xplor PDS shock absorber
- Front wheel travel
- 205 mm
- Rear wheel travel
- 185 mm
- Rake (fork angle)
- 24.0°
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 160 mm
- Rear brakes
- Single disc
Other
- Color options
- Orange/Black/White/Blue
- Comments
- Charging time 70 min. 21 Ah battery.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2019 | 2021 | 2023 | 2025 | 2027 |
|---|---|---|---|---|---|
| Seat height | 665 mm | 665 mm | 665 mm | 682 mm | 682 mm |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What engine power does the KTM SX-E 5 have?
The 2021 KTM SX-E 5 has a Power of 6.7 HP (4.9 kW) @ 3900 RPM.
What is the torque of the KTM SX-E 5?
The 2021 KTM SX-E 5 has a Torque of 13.8 Nm (1.4 kgf-m or 10.2 ft.lbs).
How much does the KTM SX-E 5 weigh?
The 2021 KTM SX-E 5 has a Wet weight of 40.5 kg (89.3 pounds).
Shop this bike
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The 2021 KTM SX-E 5 is a motocross bike that does exactly what it promises. Its electric motor delivers 6.7 hp and 13.8 Nm of instant torque. With a 665 mm seat and a 40 kg weight, it is best suited to track and off-road riding, although it is a competition machine rather than a road bike. A good option if it matches the way you ride.
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