20 TECHNICAL DATA 78
Fork offset 22 mm (0.87 in)
Brake system
Front Disc brake with four-pot brake caliper
Rear Disc brake with two-pot brake caliper
Brake disc diameters
Front 160 mm (6.3 in)
Rear 160 mm (6.3 in)
Brake discs - wear limits
Front 2.5 mm (0.098 in)
Rear 2.5 mm (0.098 in)
Tire air pressure off road
Front 1.0 bar (15 psi)
Rear 1.0 bar (15 psi)
Secondary drive ratio (50 SX) 11:40
Secondary drive ratio (50 SX Mini) 10:42
Chain 1/2 x 3/16”
Rear sprockets available 38, 39, 40, 41, 42
Steering head angle (50 SX) 66°
Steering head angle (50 SX Mini) 67.4°
Wheelbase (50 SX) 1,032±10 mm (40.63±0.39 in)
Wheelbase (50 SX Mini) 914±10 mm (35.98±0.39 in)
Seat height unloaded (50 SX) 684 mm (26.93 in)
Seat height unloaded (50 SX Mini) 558 mm (21.97 in)
Ground clearance unloaded (50 SX) 252 mm (9.92 in)
Ground clearance unloaded (50 SX Mini) 184 mm (7.24 in)
Weight without fuel, approx. (50 SX) 41.5 kg (91.5 lb.)
Weight without fuel, approx. (50 SX Mini) 40.5 kg (89.3 lb.)
20.6 Tires
Validity Front tires Rear tires
(50 SX) 60/100 - 12 36M TT
Pirelli SCORPION MX Mid Soft 32 NHS
2.75 - 10 37J TT
Pirelli SCORPION MX Mid Soft 32 NHS
(50 SX Mini) 2.50 - 10 33J TT
Pirelli SCORPION MX Mid Soft 32 NHS
2.75 - 10 37J TT
Pirelli SCORPION MX Mid Soft 32 NHS
Additional information is available in the Service section under:
http://www.ktm.com
20.7 Fork
20.7.1 50 SX Mini
Fork part number 07.18.1L.01
Fork WP Suspension USD 35
Fork length 580 mm (22.83 in)
Spring rate
Weight of rider: 15… 25 kg (33… 55 lb.) 1.8 N/mm (10.3 lb/in)
Weight of rider (standard): 25… 35 kg (55… 77 lb.) 2.0 N/mm (11.4 lb/in)
Weight of rider: 35… 45 kg (77… 99 lb.) 2.2 N/mm (12.6 lb/in)
Spring length with preload spacer(s) 337.5 mm (13.287 in)
Fork oil per fork leg 240±10 ml
(8.11±0.34 fl. oz.)
Fork oil (SAE 4) (48601166S1) ( p. 81)
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