KTM 150 SX - 2012 Specifications and Reviews

The 2012 KTM 150 SX is a lightweight two-stroke enduro machine designed for young riders and those seeking nimble off-road performance. Its 144cc single-cylinder engine delivers sharp power delivery and easy maneuverability, making it ideal for trail riding and competitive motocross. Known for its robust chrome-molybdenum frame and responsive handling, this model excels in technical terrain and tight sections.

1.5 stars Average rating: 1.5 from 5 votes
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General information

CategoryEnduro / offroad
Year2012
ModelKTM 150 SX

Engine and Transmission Specifications

Driveline14:50
ClutchWet mDouble disk clutch / hydraulically operated
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemMixture oil lubrication 1:40
IgnitionContactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
Fuel systemCarburettor. Keihin PWK 38S AG
Bore x stroke56.0 x 58.4 mm (2.2 x 2.3 inches)
Engine typeSingle cylinder, two-stroke
Capacity:143.60 ccm (8.76 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear tyre dimensions100/90-19
Front tyre dimensions80/100-21
Rear suspension travel330 mm (13.0 inches)
Rear suspensionWP Suspension 5018 BAVP DCC
Front suspension travel300 mm (11.8 inches)
Front suspensionWP Suspension Up Side Down 4860 MXMA CC
Rake (fork angle)26.5°
Frame typeCentral tube frame made of chrome molybdenum steel tubing

Physical measures and capacities

Fuel capacity7.50 litres (1.98 gallons)
Wheelbase1,480 mm (58.3 inches)
Ground clearance395 mm (15.6 inches)
Seat height992 mm (39.1 inches) If adjustable, lowest setting.
Dry weight91.6 kg (201.9 pounds)
 
 

Other specs

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

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

2012 KTM 150 SX Rider Ergonomics Assessment

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

Feet:

At 992mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2012 KTM 150 SX, with a moderate knee angle of around 90 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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