Motocross Bikes
2020KTM 150 SX
33 fields on record
The 2020 KTM 150 SX is a lightweight two-stroke motocross bike engineered for young and amateur riders transitioning to competitive off-road racing. Known for its exceptional agility and responsive handling, the 150 SX combines premium WP suspension with a nimble 87.5 kg chassis to deliver confidence-inspiring performance on technical terrain and race tracks alike.
- Capacity
- 144.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 87.5 kg
- Seat height
- 950 mm
- Power
- 11.5 HP (8.5 kW)
What’s new for the 2020 KTM 150 SX
vs the 2019| Spec | 2019 | 2020 |
|---|---|---|
| Engine capacity | 143.9 ccm (8.78 cubic inches) | 144.0 ccm (8.79 cubic inches) |
| Dry weight | 87.2 kg (192.2 pounds) | 87.5 kg (192.9 pounds) |
Other years
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross and cross-country racing on dirt tracks, not for street or commuting use.
- Built for
- A high-strung, revvy two-stroke that rewards aggressive riding, quick gear changes, and an active body position with sharp, flickable handling.
- Not ideal for
- Not suitable for riders wanting a comfortable, relaxed, road-going or touring motorcycle, or anyone seeking passenger capability or long-distance comfort.
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
- Capacity
- 144.0 ccm
- Power
- 11.5 HP (8.5 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1314 HP/kg
- Bore x stroke
- 58.0 x 54.5 mm
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Kokusan EMS
- Lubrication system
- Mixture oil lubrication 1:40
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multi-plate clutch, Brembo hydraulics
Dimensions & weight
- Wheelbase
- 1485 mm
- Seat height
- 950 mm
- Dry weight
- 87.5 kg
- Fuel capacity
- 7.00 litres
- Ground clearance
- 375 mm
Chassis & suspension
- Frame
- 25CrMo4 steel central-tube frame
- Front suspension
- WP-USD, AER 48, Ø 48 mm
- Rear suspension
- WP shock absorber with linkage
- Front wheel travel
- 310 mm
- Rear wheel travel
- 300 mm
- Rake (fork angle)
- 26.1°
Brakes & wheels
- Front brakes
- Single disc. Four-piston calipers.
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc. Two-piston calipers.
- Rear brakes diameter
- 220 mm
- Front tyre
- 80/100-21
- Rear tyre
- 100/90-19
Other
- Color options
- Orange/white/black
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 | 2009 | 2013 | 2018 | 2020 | 2022 | 2026 |
|---|---|---|---|---|---|---|
| Capacity | 143.60 ccm (8.76 cubic inches) | 143.60 ccm (8.76 cubic inches) | 143.90 ccm (8.78 cubic inches) | 144.0 ccm (8.79 cubic inches) | 144.0 ccm (8.79 cubic inches) | 144.0 ccm (8.79 cubic inches) |
| Dry weight | 90.8 kg (200.2 pounds) | 90.8 kg (200.2 pounds) | 87.2 kg (192.2 pounds) | 87.5 kg (192.9 pounds) | 87.5 kg (192.9 pounds) | 92.6 kg (204.1 pounds) |
| Seat height | 985 mm (38.8 inches) | 992 mm (39.1 inches) | 960 mm (37.8 inches) | 950 mm (37.4 inches) | 950 mm (37.4 inches) | 958 mm (37.7 inches) |
| Fuel capacity | 8.00 litres (2.11 gallons) | 7.50 litres (1.98 gallons) | 7.00 litres (1.85 gallons) | 7.00 litres (1.85 US gallons) | 7.50 litres (1.98 US gallons) | 7.20 litres (1.90 US gallons) |
| Color options | Orange/black | Orange/black | Orange/white/black | Orange/white/black | Orange/white/blue | Orange/black/grey |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KTM 150 SX?
The 2020 KTM 150 SX has a Capacity of 144.0 ccm (8.79 cubic inches).
What engine power does the KTM 150 SX have?
The 2020 KTM 150 SX has a Power of 11.5 HP (8.5 kW).
How many gears does the KTM 150 SX have?
The 2020 KTM 150 SX has a Gearbox of 6-speed.
How much does the KTM 150 SX weigh?
The 2020 KTM 150 SX has a Dry weight of 87.5 kg (192.9 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
The 2020 KTM 150 SX is a powerful and agile motocross bike that delivers top-level performance on the track. With its 150cc engine, the bike offers great power and acceleration, making it a thrilling ride for experienced riders. The lightweight chassis and responsive handling allow for precise control and maneuverability, while the top-quality components ensure durability and reliability during intense riding sessions. Whether you're hitting the jumps or navigating tight corners, the 2020 KTM 150 SX delivers a high-performance experience that will impress any motocross enthusiast.
If you're looking for a competitive edge on the motocross track, the 2020 KTM 150 SX is a top contender. Its powerful engine, lightweight chassis, and top-quality components make it a force to be reckoned with, offering thrilling performance and precise handling. With its superior power-to-weight ratio and advanced features, this bike is designed to give riders the confidence and control they need to dominate the competition. If you're serious about motocross, the 2020 KTM 150 SX is a machine that will help you reach your full potential on the track.
Please log in or register if you'd like to leave a comment.