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KTM 50 SX
2009Off-road

KTM 50 SX

Key specifications

Engine
49 cc
Weight
40 kg
Fuel type
petrol
Fuel capacity
0.6 L
Transmission
Automatic
Seat height
27 mm
Front brakes
Single disc. Bremo
Rear brakes
Single disc. bremo

Overview

Introducing the 2009 KTM 50 SX, a standout in the minibike-cross category that has made a name for itself among young riders and enthusiasts alike. This diminutive powerhouse is designed for aspiring motocross champions, delivering an exhilarating experience for those just starting their journey in the world of two-stroke performance. With its aggressive styling and vibrant orange and black color scheme, the KTM 50 SX is not just a bike; it’s a statement of intent for young riders eager to conquer the dirt tracks. At the heart of the 2009 KTM 50 SX lies a highly capable 49cc single-cylinder, two-stroke engine that showcases KTM's commitment to performance and reliability. With a compression ratio of 12.5:1 and a bore and stroke of 39.5 x 40.0 mm, this engine is engineered to deliver spirited acceleration and robust power delivery. The liquid cooling system keeps temperatures in check during intense riding sessions, while the automatic gearbox and centrifugal clutch make it easy for young riders to focus on mastering their skills without getting bogged down by complicated shifting. Whether carving through tight corners or launching off jumps, the KTM 50 SX offers a thrilling ride that builds confidence and skill. The chassis and suspension of the KTM 50 SX are equally impressive, designed to absorb the roughest terrains with ease. Built on a double-grinded central double-cradle frame, this motorcycle is not only lightweight at just 39.8 kg (87.7 pounds) but also sturdy for optimal handling. The Marzocchi front forks and WP monoshock rear suspension offer 185 mm of travel, ensuring that riders experience a smooth ride over bumps and jumps alike. With front and rear disc brakes by Bremo, stopping power is both responsive and reliable, giving young riders the confidence they need to push their limits. In addition to its robust performance features, the KTM 50 SX boasts a host of benefits and a few considerations for potential buyers. Here’s a quick rundown: **

Pros

  • Lightweight and Agile: At just under 40 kg, the bike is easy to maneuver, making it perfect for younger or novice riders.
  • Powerful Engine Performance: The two-stroke engine delivers impressive acceleration, making it a fun and exciting choice for dirt track enthusiasts.
  • Durable Suspension System: The high-quality suspension components provide excellent handling and stability on various terrains.

Cons

  • Limited Fuel Capacity: With a 2.30-liter fuel tank, longer rides may require more frequent refueling, which might not be ideal for extensive track days.
  • Kick Start Only: The traditional kick starter may be challenging for some young riders to master, especially under pressure.
  • Not Street Legal: As a dedicated minibike-cross model, the KTM 50 SX is not designed for road use, which limits its versatility compared to dual-sport or adventure models.

Technical details

Source specification data

Make
KTM
Model
50 SX
Category
Minibike-cross
Starter
Kick
Color Options
Orange/Black
Clutch
Centrifugal clutch
Gearbox
Automatic
Ignition
Seletra analogue
Fuel System
Carburettor. DELL´ORTO PHBG 19 BS
Bore X Stroke
39.5 x 40.0 mm (1.6 x 1.6 inches)
Compression
12.5:1
Displacement
49.00 ccm (2.99 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, two-stroke
Exhaust System
Aluminium
Lubrication System
Mixture lubrication 1:60
Transmission Type Final Drive
Chain
Dry Weight
39.8 kg (87.7 pounds)
Seat Height
684 mm (26.9 inches) If adjustable, lowest setting.
Fuel Capacity
2.30 litres (0.61 gallons)
Ground Clearance
255 mm (10.0 inches)
Rake
24.0°
Trail
90 mm (3.5 inches)
Rear Tyre
2.75-10
Frame Type
Double
grinded central double-cradle-type frame.
Steel
subframe.
Front Tyre
60/100-12
Rear Brakes
Single disc. bremo
Front Brakes
Single disc. Bremo
Rear Suspension
WP monoshock
Front Suspension
Marzocchi, 32 mm
Rear Wheel Travel
185 mm (7.3 inches)
Front Wheel Travel
185 mm (7.3 inches)
Rear Brakes Diameter
140 mm (5.5 inches)
Front Brakes Diameter
160 mm (6.3 inches)

Available colors

Orange/Black