KTM 50 SX Pro Senior LC - 2005 Specifications and Reviews

The 2005 KTM 50 SX Pro Senior LC is a liquid-cooled minibike designed for young riders progressing beyond beginner level. Known for its lightweight construction at 38.8 kg and responsive single-cylinder engine, it excels in off-road racing and training environments. The adjustable centrifugal clutch and low seat height make it ideal for developing proper riding technique and confidence on technical terrain.

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Engine and Transmission Specifications

ClutchCentrifugal clutch (adjustable)
Transmission typefinal driveChain
Cooling systemLiquid
IgnitionSeletra analogue
Fuel systemCarburettor. Dell´Orto PHVA 19 BS
Bore x stroke39.5 x 40.0 mm (1.6 x 1.6 inches)
Stroke2
Engine typeSingle cylinder
Capacity:49.00 ccm (2.99 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,030 mm (40.6 inches)
Ground clearance255 mm (10.0 inches)
Seat height650 mm (25.6 inches) If adjustable, lowest setting.
Dry weight38.8 kg (85.5 pounds)
 
 

KTM 50 SX Pro Senior LC dimensions and frame

Rear brakes diameter216 mm (8.5 inches)
Rear brakesSingle disc
Front brakes diameter216 mm (8.5 inches)
Front brakesSingle disc
Rear suspensionWP monoshock
Front suspension travel32 mm (1.3 inches)
Front suspensionMarzocchi
Trail67 mm (2.6 inches)
Rake (fork angle)24.0°
Frame typeCentral double-cradle-type frame

Speed and acceleration

Fuel capacity1.80 litres (0.48 gallons)

CategoryMinibike, cross
Year2005
ModelKTM 50 SX Pro Senior LC

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track60%
City5%
Cornering55%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a purpose-built first motocross bike for young children just starting out, not for any rider with prior full-size bike experience.
PurposeDesigned to teach small kids the fundamentals of motocross riding in a controlled, low-speed off-road environment.
Rider FitIts tiny 650mm seat height and 38.8kg weight mean it is only physically suitable for young children, typically around 4 to 8 years old.
CharacterA miniature but genuine dirt bike with a centrifugal clutch and real suspension components, giving a confidence-inspiring introduction to off-road riding.
Not Ideal ForThis bike is not suitable for teenagers, adults, road use, or anyone seeking speed, comfort, or long-distance capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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