2004 KTM Sportminicycles
- 50 SX Pro Junior
The sportminicycles for the first
competition experiences. And of course for the
first victory. For mini-champions ages 5 to
8. With Marzocchi racing fork, WP central shock,
and liquid cooled racing sport engine with automatic
transmission. Seat height from 585 mm.
In the KTM Sportminicycle program, the 50
SX pro series with liquid-cooling offers a
true Motocross sport motorcycle in small format
for young pros. Both models are equipped with
a WP shock absorber with improved sealing,
a new crankshaft and a new water pump shaft
for increased durability. 2004 all 50 SX Pro
Junior LC models come with thicker, more reliable
rear wheel spokes.
Rear disc brakes replace drums of the 50
SX Pro Senior LC and therefore adapted new
frame. Foot brake-cylinder with an integrated
reservoir and dual-piston rear brake calliper.
Stronger swing arm axle enlarged from 10 mm
to 12 mm with needle bearing instead of bushings
offer more stability and less maintenance.
Engine - Type single cylinder, 2-stroke
Displacement (cc) - 49
Bore x stroke (mm) - 39.5 x 40
Starter - Kick-starter
Carburetor - Dell'Orto PHVA 14 DS
Engine lubrication - mixture lubrication
Primary drive - 16:57
Final drive chain - 1/2 x 3/16" 96 R
Cooling - liquid cooled
Clutch - centrifugal clutch (adjustable)
Ignition - Selettra
Frame - central double-cradle-type frame
Handlebar - Alu D22
Front suspension - Marzocchi Ø 32 mm
Rear suspension - WP monoshock
Suspension travel - front / rear 140/205
mm
Front brake - disc brake Ø 160 mm
Rear brake - drum brake Ø 90 mm
Front / rear rim - 1,6 x 10"; 1,6 x 10"
Front / rear tyre - 2,50 x 10"; 2,75 x
10"
Transmission ratio - 11:48
Main silencer - Aluminum
Steering head angle - 24°
Wheel caster - 68.7 mm
Wheel base - 910 mm
Ground clearance (unloaded) - 220 mm
Seat height - 585/610 mm (adjustable)
Fuel capacity - approx. 1.8 liters
Weight (ready to race, no fuel) approx.
- 37.6 kgs
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