Motocross Bikes
2018KTM 150 SX
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The 2018 KTM 150 SX is a lightweight motocross bike built for young riders and beginners transitioning to competitive off-road racing. Its compact 960 mm seat height and 87.2 kg weight make it highly accessible, while the WP suspension and strong braking system deliver genuine performance. The bike is best known for offering serious race credentials at an entry-level price point.
- Capacity
- 143.9 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 87.2 kg
- Seat height
- 960 mm
- Power
- 11.5 HP (8.5 kW)
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
- 143.9 ccm
- Power
- 11.5 HP (8.5 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1319 HP/kg (dry)
- 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
- 960 mm
- Dry weight
- 87.2 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 | 2022 | 2026 |
|---|---|---|---|---|---|
| Capacity | 144 cc | 144 cc | 144 cc | 144 cc | 144 cc |
| Dry weight | 91 kg | 91 kg | 87 kg | 88 kg | 93 kg |
| Seat height | 985 mm | 992 mm | 960 mm | 950 mm | 958 mm |
| Fuel capacity | 8 L | 7.5 L | 7 L | 7.5 L | 7.2 L |
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 2018 KTM 150 SX has a Capacity of 143.9 ccm (8.78 cubic inches).
What engine power does the KTM 150 SX have?
The 2018 KTM 150 SX has a Power of 11.5 HP (8.5 kW).
How many gears does the KTM 150 SX have?
The 2018 KTM 150 SX has a Gearbox of 6-speed.
How much does the KTM 150 SX weigh?
The 2018 KTM 150 SX has a Dry weight of 87.2 kg (192.2 pounds).
Shop this bike
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The 2018 KTM 150 SX is a powerhouse of a motorcycle, delivering top-notch performance and handling for riders of all skill levels. With a lightweight chassis and a powerful 150cc engine, this bike is a force to be reckoned with on the track or trails. The superior suspension and advanced technology make for a smooth and responsive ride, while the sleek design and comfortable seat ensure a comfortable experience for long rides. Whether you're a seasoned pro or just starting out, the KTM 150 SX has the power and agility to tackle any terrain with ease.
Overall, the 2018 KTM 150 SX is a fantastic motorcycle that offers top-notch performance and handling. Its lightweight chassis, powerful 150cc engine, and superior suspension make it a force to be reckoned with on the track or trails. Whether you're a seasoned pro or just starting out, the KTM 150 SX has the power and agility to tackle any terrain with ease. With its sleek design and comfortable seat, it's also a great option for long rides. If you're in the market for a high-performance motorcycle that's suitable for riders of all levels, the 2018 KTM 150 SX is definitely worth considering.
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