KTM News 2013 MX 2013 Enduro 2013 Travel 2013 Supermoto
2013 KTM 150 SX
Performance approaching that of a 250 with the handling of a 125. The perfect all-rounder in the 2-stroke segment appears even more aggressive now with new bodywork and significantly revamped suspension. You can't go wrong here.
Cooling system


The tried and tested, integrated cooling system leads from the cylinder head through the frame triangle directly to the new radiators made byWP Radiator from tougher aluminium. Lack of piping simplifies radiator installation and improves air flow beneath the fuel tank of theKTM 150 SX 2013.



The revised design of the airbox guarantees optimum protection of the filter from dirt and maximum air flow for top performance. New, significantly stiffer intake snorkels (between filter and throttle body) also have a noticeable effect. New airbox covers are manufactured in a 2-component process with new in-mould graphics. The fixing for the left cover has been further improved, along with its installation. This makes quick replacement of the twin-air filter in a matter of seconds even easier. Needless to say, no tool is required - a feature that's unique in the motocross world. Furthermore, an additional tab on the cover allows it to be secured with a bolt.



The modern frame design of lightweight, high strength, chrome-molybdenum steel section tubes guarantees an ideal mix of longitudinal and torsional stiffness, resulting not only in easy handling and precise steering behaviour, but also in excellent ride stability. The engine braces to the cylinder head have also been optimised, along with their attachment to the frame. The frames bear a new colour for the 2013 model year and they are still the benchmark in terms of weight and stability.

Shock absorber


The WP monoshock has been further refined for the KTM 150 SX 2013 and, together with the KTM linkage system, it excels with its completely revamped settings for improved damping, more traction and even higher reserves against bottoming out. As ever, rebound and compression damping (high and low speed) can be adapted individually to the track and rider in no time at all.



The cast aluminium swingarm has been developed with state-of-the-art calculation and simulation software and constructed, in terms of design and wall thickness, for minimum weight with optimum stiffness and sufficient flex. For the 2013 model year, engineers have redesigned the rear section of the swingarm to allow installation of a thicker rear wheel axle (25 mm (0.98 in) instead of 20 mm (0.79 in)) for the benefit of better tracking stability. Moreover, they have succeeded in reducing weight by more than 100 g (3.53 oz) by revising the bolts, cups and nuts on the linkage.



All SX models are equipped in 2013 with new Renthal Fatbar 827 handlebars, whose offset has been adapted to the needs of our motocross professionals (same as 996 Bend). As on the factory bikes, these handlebars are now black anodised and protect the rider with a large Renthal crash pad. Furthermore, we've also developed new grips that are manufactured in a 2-component process by Domino. Needless to say, four handlebar position settings are still the KTM standard.



Brakes from Brembo are standard equipment on KTM motocross bikes and, together with lightweight wave brake discs, they are recognised as the measure of all things in terms of application and brake performance. At the rear wheel, the brake calliper carriers have been adapted to the larger axle diameter on the KTM 150 SX 2013.


Design 1-cylinder 2-stroke engine, water-cooled, with reed intake and exhaust control
Displacement 143.6 cm³ (8.763 cu in)
Bore 56 mm (2.2 in)
Stroke 58.4 mm (2.299 in)
Starting aid  
Gearbox 6-gear, claw shifted
Primary transmission 23:73
Secondary ratio 14:50
Clutch Multidisc clutch in oil bath/hydraulically activated
Ignition Contactless controlled fully electronic ignition with digital ignition adjustment, type Kokusan




Frame Central tube frame made of chrome molybdenum steel tubing
Fork WP Suspension Up Side Down 4860 MXMA CC
Shock absorber WP Suspension 5018 BAVP DCC
Suspension travel Front 300 mm (11.81 in)
Suspension travel Rear 330 mm (12.99 in)
Brake system Disc brakes, brake calipers on floating bearings
Brake discs - diameter Front 260 mm (10.24 in)
Brake discs - diameter Rear 220 mm (8.66 in)
Chain 5/8 x 1/4"
Steering head angle 63.5°
Wheelbase 1,480±10 mm (58.27±0.39 in)
Ground clearance unloaded 395 mm (15.55 in)
Seat height unloaded 992 mm (39.06 in)
Total fuel tank capacity, approx. 7.5 l (1.98 US gal)
Super unleaded gasoline, mixed with 2-stroke engine oil (1:40)
Weight without fuel, approx. 90.8 kg (200.2 lb.)