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The KTM 125 SX has been a stepping stone to a professional career for many motivated young riders. This is not likely to change with the new fairing and significantly improved suspension. Powered by the powerful 2-stroke engine with exhaust valve control and 6-speed transmission, the lightest motorcycle in its class has been at the top of the rankings for years..
Air box
The new airbox design guarantees optimal filter protection against dirt, and maximum airflow for increased performance. The new airbox covers are made using a two-component process, with new “Inmould” graphics. The fixing of the left cover and its mounting have been further improved. This makes replacing the Twin-Air filter even easier and takes only a few seconds. And of course, no tools are needed – a unique feature in the motocross world. In addition, an additional tab allows the optional cover to be secured by means of a screw.
Framework
Very modern, the frame design in lightweight, high-strength chrome-molybdenum profile tubes guarantees the perfect blend of longitudinal stiffness and torsional stiffness. This not only offers good handling and precise steering, but also excellent driving stability. The optimization also focused on the engine mountings to the cylinder head as well as their connection to the frame. The frames of this 2013 vintage wear a new color and remain a benchmark in terms of weight and stability..
Shock absorber
The WP Monoshock shock absorber has been further improved for the KTM 125 SX 2013 and now stands out, along with the KTM steering system, with a completely overhauled tuning for optimized damping, improved traction and even more shock reserves. Of course, the rebound / compression damping (High and Low speed) can be adjusted in a jiffy depending on the rider and the track..
Revamped swingarm
The cast aluminum swingarm was designed using state-of-the-art calculation and simulation software; the design and thickness of the walls ensure minimum weight for optimum strength and sufficient flex. For 2013 models, engineers changed the design of the rear of the swingarms to fit a more robust rear wheel axle (25 mm (0.98 in) instead of 20 m (66 ft)) for better road holding. In addition, weight reduction of over 100 g (3.53 oz) was achieved through modification of pins, cups and steering nuts..
Improved fork
Further improved, the closed cartridge 48 mm (1.89 in) inverted fork benefits from fully optimized tuning and a new oil specification for perfect match with new frames and engines. This new oil is much more resistant to wear and guarantees more constant damping both over the course of the stroke and over the life cycle. The new lower triple clamp is 80 grams lighter, and like the upper triple clamp, it has been CNC milled from high quality aluminum to significantly improve the damping and response characteristics of the fork..
Dressing
The completely redesigned fairing is a clear signal, and not just from an aesthetic point of view, that the 2013 vintage represents a whole new generation of SX. In particular the ergonomics and functionality of the new plastics are designed so that the entire chassis and engine form a whole in every detail, in perfect harmony with the rider. Tank and deflectors have been given a makeover, as have the covers of the air box and the front fender, plate included. We can for example point out the front mudguard, which no longer has any ribs on its inner face in order to avoid any accumulation of mud. This innovative structure, combined with improved attachment of the mudguard to the triple tree, results in an increase in lateral torsion resistance by up to 50%..
What you must remember
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7,090 €
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Replaces
125 SX 2012
Model marketed in
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The technical aspect
2013 KTM 125 SX
- Frame
- Frame: central tubular chrome-molybdenum steel
- Tank: 7.5 liters
- Seat height: 992 mm
- Wheelbase: 1,480 mm
- Dry weight: 90 kg
- Train before
- WP inverted telehydraulic fork Ø 48 mm, deb: 300 mm
- 1 disc Ø 260 mm, 2 piston caliper
- Transmission
- 6-speed gearbox
- Secondary chain transmission
- Rear axle
- WP mono-shock, deb: 330 mm
- 1 disc Ø 220mm, 1 piston caliper
- Motor
- Single cylinder
in line
, 2 stroke - Cooling: Liquid cooling
-
124.80 cc
(54 x 54.5 mm) - Crit’air:
Detached pieces
exhaust
motor
fluid
electricity
filtration
braking
chain kit
Competitors
Kawasaki KX 250 F 2013
Gallery
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