2011 KTM SX Review


Available in ten models offering varying levels of performance due to their respective engines, the 2011 KTM SX offers a versatile array of offroad bikes for any level of experience, including bikes intended for youths which have a smaller frame and seat height. Geared towards motocross racing and hill climbing, the KTM SX includes a lightweight frame to maximize its potential speed and agility to handle all sorts of offroad environments. Several improvements have been made to this year’s line of bikes, including an improved chassis and engine, which add to the SX’s overall appeal as a sporty and aggressive motorcycle.

The key difference between the many models is the power that they provide. Novice rider to expert will be able to find the motorcycle that is just right for them with all the choices the 2011 KTM SX makes available to consumers in the market for a competitive dirt bike. The KTM SX 50 MINI and SX 50 offer 49-cc displacement and smaller frames for younger riders. The SX 65 also offers a smaller bike for youths, but includes a heftier engine displacement of 64.9-cc. The SX 85 offers 84.9-cc of power and the SX 105 gets a displacement of 104-cc. Next in line, the SX 150 features 143.6-cc, while the SX 250 gets 249-cc. All the previous engines which are mentioned are two-stroke engines, while the SX F models receive a heftier, four-stroke engine. The SX 250 F, 350 F, and 450 F have an engine displacement of 248.6-cc, 349.7-cc, and 449.3-cc, respectively. The F models are designed for higher performance and are often sought after by motocross professionals.

Offering all levels of power to suit any buyer looking for a sporty, offroad motorcycle, the KTM SX leaves no stone unturned when it comes to providing a versatile line of sports bikes. Including all the latest innovations in its engine and other performance parts, as well as a lightweight plastic body with an appealing and athletic design, the KTM SX hits all the marks consumers in this segment of the market are looking for in an offroad-capable motorcycle.

New For 2011

  • New chassis for improved support
  • Improved two-component rear silencer that is larger and has a better connection
  • New airbox
  • Improvement in power performance
  • New exhaust with a different shape and larger dimensions

2011 KTM SX Specs

  • Model: 2011 KTM SX 150
  • Engine Type: 143.6-cc, single-cylinder, two-stroke
  • Bore and Stroke: 2.2 inches X 2.3 inches
  • Compression ratio: N/A
  • Valve Train: Reed valve
  • Induction: Liquid cooled
  • Ignition: Kick
  • Transmission: Six-speed, manual
  • Final Drive: Chain
  • Fuel Capacity: Two gallons
  • Estimated Fuel Economy: N/A
  • Brakes (Front): Hydraulic disc
  • Brakes (Rear): Hydraulic disc
  • Suspension (Front): Inverted fork
  • Suspension (Rear): Twin sided swing arm
  • Wheelbase: 58.3 inches
  • Rake: N/A
  • Trail: N/A
  • Seat Height:
  • Curb Weight: 195.8 pounds
  • Tires (Front): Bridgestone 80/100 R21
  • Tires (Rear): Bridgestone 100/90 R19


  • Aluminum skid plates in a variety of styles
  • Assorted graphic kits
  • Assorted hand grips
  • Assorted Renthal handlebars
  • Indoor or outdoor protective cover
  • Mini bar pad
  • Tank heat shield

Key Competitors For The 2011 KTM SX

  • Kawasaki KLX
  • Husqvarna CR
  • Yamaha TT-R 230
  • Zero MX Dirt