The 2021 KTM 150 SX: Track Attack To The Max

The 2021 KTM 150 SX is an interesting take on the supercross and motocross categories. Using a special chromoly steel alloy, KTM’s engineers have managed to keep the weight of the 150 SX down, letting the extra power from the 150cc engine move it at speeds closer to a 250cc class competition bike, but with the agility and light handling of a 125cc.

The Austrian company actually developed the engine from the 125 SX engine, adding a little more bore and stroke to give it that extra punch. While there is no 150cc class in motocross competition, the 150 SX is often bought by trail riders and motocrossers to practice on for 250cc events without wearing out their primary bike.

The bike still includes the standard WP suspension, 6-speed multi-plate hydraulic clutch, and ultra-durable swingarm and frame that has been battle tested in the crucible of motocross. What is interesting about the WP XAct suspension on the 150 SX is that it is AER equipped, meaning that the right fork provides steering damping and moderate shock absorption, while the left fork is a full on air spring. This gives the bike extremely confident handling and a great addition to their offroad models for 2021.

The 2021 KTM 150 SX starts at $7,599 USD / $8,999 CAD.

On this page: we’ve curated specs, features, news, photos/videos, etc. so you can read up on the new 2021 KTM 150 SX in one place.

2021 KTM 150 SX


Model Overview

General Info

  • Price: $7,599 USD / $8,999 CAD
  • Key Features:
    • 6-speed manual transmission
    • WP XAct racing suspension with AER tech included
    • Kickstarter only, no electric start

Main Specs

  • Engine Type: 150cc two-stroke single
  • Horsepower: Over 40 HP
  • Torque: Not supplier by manufacturer
  • Wet Weight: 210 lbs (approx 95.5 kg)
  • Seat Height: Not supplier by manufacturer

2021 KTM 150 SX


2021 KTM 150 SX Specifications

From KTM

ENGINE

Engine 150cc, 1-cylinder, 4-stroke engine
Power Over 40 HP
Bore x Stroke 58 mm x 54.5 mm
EMS Keihin EMS
Power in KW
Starter Kickstarter
Lubrication

DRIVETRAIN

Clutch Multi-plate clutch, Brembo hydraulics 
Transmission 6-Speed
Chain 5/8 x 1/4″

CHASSIS

Suspension Front WP XACT-USD, Ø 48 mm
Suspension Rear WP XACT Monoshock with linkage
Brakes Front 260 mm, Disc brake
Brakes Rear 220 mm, Disc brake
Suspension travel (front) 310 mm
Suspension travel (rear) 300 mm
Tank capacity (approx.) 7.5 l
Color Black, Orange

ELECTRICAL

Ignition
Spark Plugs
Headlight LED
Tail Light LED

DIMENSIONS

Overall Length
Overall Width
Overall Height
Wheelbase
Ground Clearance 375 mm
Seat Height 950 mm
Wet Weight 87.5 kg

WARRANTY

Warranty
Extension

2021 KTM 150 SX


2021 KTM 150 SX Features


2021 KTM 150 SX Photos


2021 KTM 150 SX Videos

N/A


No Comment

Leave a reply

Your email address will not be published.