2015 KTM 125 SX Base

2015 KTM 125 SX

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.

• Bodywork

KTM engineers have focussed on designing the bodywork ergonomically and functionally in such a way that the whole motorcycle is in perfect harmony with the rider down to the very last detail. The front fender is a perfect example of how moulded plastic components can gain maximum stability with a well thought out structure and well-conceived attachment.

• Seat

The ergonomically perfectly designed seat is equipped with a durable foam core, ensuring both generous comfort and high stability.

• Airbox

At the same time, the design of the airbox guarantees optimum protection of the air filter from dirt plus maximum air throughput for the highest performance. Quick replacement of the twin-air filter - without tools and in a matter of seconds - has long since been an unrivalled KTM standard.

• Fueal Tank

All models in the SX range are equipped with a 7.5 litre, lightweight polyethylene fuel tank.

• Handlebar

All SX models are equipped with the extremely sturdy, tapered Renthal Fatbar 827 handlebar that features an offset specially designed to meet the demands of motocross. In accordance with the proven KTM standard, the handlebar can be fixed in a choice of four positions. For MY 2015, it is equipped with softer two-component grips to spare the rider's hands.

• Brakes

High-tech brakes from Brembo have always been standard equipment on KTM offroad bikes and, together with the lightweight Galfer 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 tires were developed in collaboration with the Red Bull/ KTM USA Factory Racing Team and offer perfect traction with top performance. The new rear sprockets save 50 grams in unsprung mass.

• Engine

The engine on the 125 SX 2015 has been upgraded with an optimized ignition curve in order to achieve more effective combustion for better power development and optimum rideability.

• Frame

The modern frame design of the SX models, comprising lightweight, high strength, chrome-molybdenum steel section tubes, combines maximum longitudinal stiffness with optimum torsional stiffness. A forged and milled cross-tube connects the two frame halves with the connecting rod of the linkage on the new SX frame for 2015. Omission of the weld seams leads to very precise manufacturing tolerances and it saves another 60 grams of weight.