AS JimmyJam has stated they are the same size, power might be different I don't know at least the delivery of power is different anyway and the 250f is a little heavier
KTM 250 sx F
Frame: Central double-cradle-type 25CrMo4
Subframe: Aluminium
Handlebar: Renthal, Aluminium Ø 28/22 mm (1.10/0.87")
Front suspension: WP USD Ø 48 mm (1.89")
Rear suspension: WP PDS shock absorber
Suspension travel front/rear: 300 / 335 mm (11.81 / 13.19")
Brakes, front/rear: Disc brakes 260 / 220 mm (10.24 / 8.66")
Rims, front/rear: 1.60 x 21"; 2.15 x 19" Excel
Tires, front/rear: 80/100-21"; 100/90-19"
Chain: 5/8 x 1/4"
Main silencer: Aluminium
Steering head angle: 63.5°
Wheel base: 1475 ± 10 mm (58.07 ± 0.39")
Ground clearance (unloaded): 380 mm (15")
Seat height: 985 mm (38.78")
Tank capacity: approx. 8 liters (2.11 gal)
Weight (no fuel): approx. 98 kg (216 lbs)
KTM 125 xc 2st
Frame: Central double-cradle-type 25CrMo4
Subframe: Aluminium
Handlebar: Renthal, Aluminium Ø 28/22 mm (1.10 / 0.87")
Front suspension: WP USD Ø 48 mm (1.89")
Rear suspension: WP PDS shock absorber
Suspension travel front/rear: 300 / 335 mm (11.81 / 13.19")
Brakes, front/rear: Disc brakes 260 / 220 mm (10.24 / 8.66")
Rims, front/rear: 1.60 x 21"; 2.15 x 19" Excel
Tires, front/rear: 80/100-21"; 100/90-19"
Chain: 5/8 x 1/4"
Main silencer: Aluminium
Steering head angle: 63°
Wheel base: 1471 ± 10 mm (57.91 ± 0.39")
Ground clearance (unloaded): 390 mm (15.35")
Seat height: 985 mm (38.78")
Tank capacity: approx. 8 liters (2.11 gal)
Weight (no fuel): approx. 90.8 kg (200.2 lbs)
