KTM 150 SX - 2019 Specifications and Reviews

The 2019 KTM 150 SX is a lightweight two-stroke dirt bike engineered for young and intermediate motocross riders seeking aggressive performance. Known for its responsive handling and compact geometry, this machine excels in tight technical terrain with its 87.2 kg weight and precision WP suspension. The 150cc platform strikes an ideal balance between power delivery and manageability for riders progressing through competitive motocross ranks.

4 stars Average rating: 4 from 1 votes
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General information

CategoryCross / motocross
Year2019
ModelKTM 150 SX

Engine and Transmission Specifications

Driveline14:50. Primary drive: 23:73.
ClutchMulti-plate clutch, Brembo hydraulics
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
IgnitionKokusan EMS
Fuel systemCarburettor. Mikuni TMX
Bore x Stroke58.0 x 54.5 mm (2.3 x 2.1 inches)
Engine detailsReed intake.
Engine typeSingle cylinder, two-stroke
Capacity:143.9 ccm (8.78 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsCNC machined hubs. Excel rims. Wire spoked.
Rear brakesSingle disc. Two-piston calipers.
Diameter260 mm (10.2 inches)
Front brakesSingle disc. Four-piston calipers.
Rear wheel travel300 mm (11.8 inches)
Rear SuspensionWP shock absorber with linkage
Front wheel travel310 mm (12.2 inches)
Front SuspensionWP-USD, AER 48, Ø 48 mm
Rake (fork angle)26.1°
Frame type25CrMo4 steel central-tube frame
 
 

Physical measures and capacities

Fuel capacity7.00 litres (1.85 US gallons)
Wheelbase1485 mm (58.5 inches)
Ground clearance375 mm (14.8 inches)
Seat height950 mm (37.4 inches) If adjustable, lowest setting.
Dry weight87.2 kg (192.2 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsOrange/white/black

Performance Profile & Rider Fit

Best For

Track90%
City5%
Cornering88%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForBest suited to intermediate-to-advanced off-road riders, as a small-bore two-stroke motocross machine demands active riding and precise clutch and throttle control to stay in its power band.
PurposeBuilt purely for motocross and cross-country racing on dirt tracks, not for street or commuting use.
Rider FitIts ultra-light dry weight and tall seat height favor smaller or lighter riders who can still comfortably manage the high seat and aggressive riding stance.
CharacterA high-strung, revvy two-stroke that rewards aggressive riding, quick gear changes, and an active body position with sharp, flickable handling.
Not Ideal ForNot suitable for riders wanting a comfortable, relaxed, road-going or touring motorcycle, or anyone seeking passenger capability or long-distance comfort.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2019 KTM 150 SX Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 950mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2019 KTM 150 SX, with a cramped knee angle of around 85 degrees and an upright 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
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MotorcycleDB Review

The 2019 KTM 150 SX is a lightweight and powerful motocross bike that offers excellent handling and performance on the track. With a 150cc two-stroke engine, this bike delivers impressive power and torque, making it a top choice for riders who want to dominate the competition. The bike's compact and agile design allows for precise control and maneuverability, while its suspension system absorbs bumps and jumps with ease. Overall, the 2019 KTM 150 SX is a top contender in the 150cc motocross class, offering an exhilarating riding experience for enthusiasts. The 2019 KTM 150 SX motorcycle is a top performer in its class, with its lightweight and powerful two-stroke engine delivering impressive performance on the track. Its agile handling and precise control make it a top choice for riders looking to dominate the competition. With its advanced suspension system, the bike can handle jumps and bumps with ease, offering a smooth and exhilarating riding experience. Overall, the 2019 KTM 150 SX is a top contender in the 150cc motocross class, delivering an unbeatable combination of power, handling, and performance.
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