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KTM 50 SX Pro Junior LC
2005Minibike

KTM 50 SX Pro Junior LC

Key specifications

Engine
49 cc
Weight
38 kg
Fuel type
petrol
Fuel capacity
0.5 L
Seat height
23 mm
Front brakes
Single disc
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 2005 KTM 50 SX

Pros

  • Lightweight and Compact: Weighing only 37.6 kg, the 50 SX Pro Junior LC is easy to handle, making it perfect for younger riders.
  • Adjustable Centrifugal Clutch: This feature allows for customized power delivery, helping riders develop their skills at their own pace.
  • Advanced Suspension: The combination of Marzocchi and WP suspension components provides excellent shock absorption, ensuring a smooth ride even on rugged terrain.

Cons

  • Limited Fuel Capacity: With a fuel tank capacity of just 1.80 litres (0.48 gallons), frequent refueling may be needed during extended riding sessions.
  • Minimal Front Travel: At just 32 mm, the front suspension travel may limit performance on particularly rough tracks.
  • Two-Stroke Maintenance: While two-stroke engines are known for their power, they typically require more frequent maintenance than four-stroke counterparts, which may be a consideration for new riders and their caretakers.

Technical details

Source specification data

Make
KTM
Model
50 SX Pro Junior LC
Category
Minibike-cross
Clutch
Centrifugal clutch (adjustable)
Ignition
Seletra analogue
Fuel System
Carburettor. Dell´Orto PHVA 14 DS
Bore X Stroke
39.5 x 40.0 mm (1.6 x 1.6 inches)
Displacement
49.00 ccm (2.99 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, two-stroke
Transmission Type Final Drive
Chain
Dry Weight
37.6 kg (82.9 pounds)
Seat Height
585 mm (23.0 inches) If adjustable, lowest setting.
Fuel Capacity
1.80 litres (0.48 gallons)
Ground Clearance
220 mm (8.7 inches)
Rake
24.0°
Trail
69 mm (2.7 inches)
Frame Type
Central double-cradle-type frame
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Single disc
Rear Suspension
WP monoshock
Front Suspension
Marzocchi
Front Wheel Travel
32 mm (1.3 inches)
Rear Brakes Diameter
216 mm (8.5 inches)
Front Brakes Diameter
216 mm (8.5 inches)