2020 KTM 150 SX

A step up from the Austrian manufacturer’s 125cc two-stroke MXer.

150 SX right side
2020 KTM 150 SXKTM

KTM is known to produce bikes with engine displacements that are outside the norm, at least in terms of racing classes. One example from its four-stroke lineup is the popular 350 SX-F, and another from its two-stroke models is the 150 SX. Designed for those who aren’t limited by a displacement in their racing class and riders who just want to have a bike that handles like a 125 but has some additional power, the 150 SX could very well be one of the most fun motocross bikes on the market.

2020 KTM 150 SX Reviews, Comparisons, And Competition

Seeing as the 2020 KTM 150 SX technically has a displacement of 144cc, it has one competitor with the same engine size that is also designed for motocross use—the TM MX 144. Aside from that, prospective 150 SX buyers may also want to consider a 125cc two-stroke motocrosser such as the KTM 125 SX, Husqvarna TC 125, Yamaha YZ125, and TM MX 125. The suggested retail price of the 150 SX is $7,499.

150 SX front right
2020 KTM 150 SXKTM

KTM 150 SX Updates For 2020

The KTM 150 SX received some suspension changes for the new decade including a revised setting and new fork piston in the WP Xact fork, an updated setting and new compression adjuster for the WP Xact shock, a different fixation of the front sprocket that uses a screw and diaphragm spring instead of a circlip, and new graphics on the plastics.

150 SX left side
2020 KTM 150 SXKTM

2020 KTM 150 SX Claimed Specifications

Price $7,499
Engine Liquid-cooled single-cylinder
Displacement 144cc
Bore x Stroke 58.0 x 54.5mm
Horsepower N/A
Torque N/A
Transmission 6-speed
Final Drive Chain
Seat Height 37.4 in.
Rake 26.1°
Trail N/A
Front Suspension 48mm inverted fork, fully adjustable; 12.2-in. travel
Rear Suspension Fully adjustable; 11.8-in. travel
Front Tire 80/100-21
Rear Tire 100/90-19
Wheelbase 58.5 in.
Fuel Capacity 2.0 gal.
Claimed Dry Weight 193 lb.
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