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2015 KTM 125 SX — Contact Dealer for Pricing

Current ›› KTM ›› MX ›› 2015-125-SX ››

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2015 KTM 125 SX

IN A CLASS OF ITS OWN

The 125 SX has long since established itself as the undisputed top dog above all in junior race series and as a springboard to the professional leagues. Powered by a high-performance 2-stroke engine with exhaust control system and 6-speed transmission, the 125 SX has been further improved for the 2015 model year, ensuring it will maintain its popularity with young champions in future.

Standard Features May Include:
  • ENGINE
  • The engine on the 125 SX 2015 has been upgraded with an optimised ignition curve in order to achieve more effective combustion for better power development and optimum rideability.

  • LINKAGE / SHOCK ABSORBER
  • The revamped damping system for MY 2015 features a new linkage with optimised geometry. The flatter progression with a higher initial rate ensures greater stability and lowers the rear end. In addition, the new design saves another 40 grams of weight. The fully adjustable WP 5018 shock absorber has been completely retuned to suit the new linkage.

  • FORK
  • The fully adjustable upside-down fork from WP Suspension has been perfectly tuned to the new rear wheel damping system and the new 22 mm front axle (formerly 26 mm) for MY 2015. The new axle provides a better feel for the front wheel and also saves a further 40 grams. The new fork stubs now feature an offset of 33 mm instead of 35 mm, which together with increased trail deliver greater ride stability. Furthermore, they accommodate newly developed, 50 gram lighter fork protectors.

  • BRAKES
  • High-tech brakes from Brembo have always been standard equipment on KTM offroad bikes and, together with the lightweight wave brake discs, they are the measure of all things in terms of brake technology. As the best brakes in the motocross class, they remain unchanged for MY 2015.

  • WHEELS
  • The wheels fitted for MY 2015 feature black coated, high-end Excel rims with lightweight, CNC-machined hubs and spokes with lightweight aluminium nipples, allowing highest levels of stability to be achieved, while keeping weight to a minimum. New Dunlop Geomax MX 52 tyres were developed in collaboration with the KTM USA factory team and offer perfect traction with top performance. The new rear sprockets save 50 grams in unsprung mass.

    Photos

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    Specifications

    2015 KTM 125 SX Base
    Year 2015
    Manufacturer KTM
    Model Name 125 SX
    Trim Name Base
    Generic Type (Primary) Off-Road
    Engine
    Engine Type 1-cylinder 2-stroke engine, water-cooled, with reed intake and exhaust control
    Displacement 124.8 cm³ (7.616 cu in)
    Bore 54 mm (2.13 in)
    Stroke 54.5 mm (2.146 in)
    Starter Kick starter
    Gearbox 6-gear, claw shifted
    Reduction Ratio, Primary 23:73
    Reduction Ratio, Secondary 13:50
    Clutch Wet multi-disc clutch / Brembo hydraulics
    Ignition Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
    Chassis
    Frame Type Central tube frame made of chrome molybdenum steel tubing
    Fork WP Suspension Up Side Down 4860 MXMA 4CS
    Shock Absorber WP Suspension 5018 BAVP DCC
    Suspension
    Front Suspension 300 mm (11.81 in)
    Rear Suspension 317 mm (12.48 in)
    Brakes
    Brake System Type Disc brakes, brake calipers on floating bearings
    Brake Disc Diameter, Front 260 mm (10.24 in)
    Brake Disc Diameter, Rear 220 mm (8.66 in)
    Sprocket Chain 520 X-ring
    Steering 63.5°
    Wheelbase 1,480±10 mm (58.27±0.39 in)
    Ground Clearance 395 mm (15.55 in)
    Seat Height, Unladen 992 mm (39.06 in)
    Capacities
    Fuel Capacity 7.5 l Unleaded premium fuel (98 octane), mixed with 2-stroke engine oil (1:40)
    Weights
    Curb Weight 92.1 kg