Manual KTM 50 SX Junior (page 37 of 42) (English)

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ENGLISH

TECHNICAL SPECIFICATIONS - CHASSIS »

50 SX JUNIOR 50 SX 50 SUPERMOTO

Frame single downtube, split-cradle

Fork Marzocchi Ø = 32 mm

Wheel travel front/rear 140/205 mm (5.5/8 in) 185/185 mm (7.3/7.3 in)

Rear suspension Central shock absorber WP

Front brake Disk brake Ø 160 mm (6.4 in)

Rear brake

Drum brake Ø 90 mm (3.5 in)

Disk brake Ø 140 mm (5.5 in)

Tires front 2.50x10” Pirelli MT32A 2.50x12” Pirelli MT32A 90/90-10 Pirelli SL26

Tires rear 2.75x10” Pirelli MT320 2.75x10” Pirelli MT320 90/90-10 Pirelli SL26

Tire pressure front/rear: 1.0 bar

Fuel tank capacity 1.8 Liters

Final drive ratio 11 : 48 10 : 44

Chain 1/2x3/16“ 96 rolls 1/2x3/16“ 102 rolls

Steering angle 66°

Wheel base 910 mm (35.8 in) 1030 mm (40 in)

Seat height, unloaded 585 mm/610 mm (23/24 in) 650/675 mm (25.6/26.6 in)

Ground clearance 220 mm (8.6 in) 255 mm (10 in)

Rider’s body height max. 130 cm (51 in)

Rider’s body weight max. 35 kg (78 lbs)

Recommended age of rider 4-7 years 6-10 years

Engine 50 LC

TIGHTENING TORQUES

Hexagon nuts front/rear axle M12x1 40 Nm

Hexagon nut swing arm bolt M12 40 Nm

Clamping screw upper fork bridge M8 20 Nm

Clamping screw lower fork bridge M6 10 Nm

Screws handlebar clamp M8 20 Nm

Shock absorber top/bottom M10 45 Nm

Allan screw – Handlebar support M10 Loctite 243 + 40 Nm

Front brake caliper M8 Loctite 243 + 20 Nm

Front brake disk M6 Loctite 243 + 10 Nm

Swing arm bolt M12x1 40 Nm

Spoke nipple M4 3 Nm

Other chassis screws M5 6 Nm

M6 10 Nm

M8 25 Nm

M10 45 Nm

STANDARD-ADJUSTMENT – FORK

Spring 2,0 N/mm

Preload 10 mm (0.4 in)

Fork oil SAE 7,5

Air chamber length 110 mm (4.3 in)

STANDARD ADJUSTMENT - SHOCK ABSORBER

50 SX Junior

WP 03189B01

50 SX, 50 Supermoto

WP 03189B02

Rebound adjuster 5 5

Spring 85 N/mm 45 N/mm

Spring preload 10 mm (0.39 in) 7 mm (0.28 in)

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KTM 50 SX Junior Manual

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