250/300 EXC/MXC Engine

A new exhaust shape in the cylinder prolongs the useful life of the piston rings and a redesigned combustion chamber in the cylinder head improves performance especially at and peak power.

Chassis/Suspension

Chassis innovations on all models have their focus on improved handling with many general improvements on all models.

In 2003, all SX/EXC/MXC models will come with the White Power USD 48 mm forks.

The WP PDS suspension strut was modified considerably. A bigger compensating tank and a larger oil volume prevent premature fading. Changed flow cross-sections for the oil stream and new tuning setups provide better progression.

All SX, EXC and MXC models come with a new front-wheel axle enlarged from 20 to 26 mm. The front-wheel hub was also given a new design and its diameter increased from 36 to 52 mm.

The rear-wheel hub was reinforced from 48 to 64 mm.

All SX and 2-stroke EXC models come with a high quality tapered Renthal handlebar, all 4-stroke EXC models with a 12mm Magura handlebar of identical design. The rear frame of the 125SX is 5mm lower and the position of the footrests was moved up by 3 mm. All 2003 EXC/MXC models will be fitted with the broader footrests of the SX machines.

To prevent damage all models are fitted with flexible steel clutch hoses.

All EXC models boast a new tank with the "SX" look. Also the shape of the tank shrouds is made uniform for both models. The advantage for the Enduro models is a more ergonomic tank/seat contour and thus a better sitting position. All tanks come in a basic orange with the EXC models slightly transparent. The EXC tanks are equipped with new fuel cocks. A recess in the tank allows riders to operate the choke and warm start knob with easily.

The EXC models come with a highly functional digital odometer with a control unit which, as an option, can be arranged away from the odometer at the end of the handlebar.

Plastic Components

The new series look for 2003 is taken from KTM's title winning 2002 GP Team.A new, seamless seat cover creates an ideal surface.

Graphics Design/Colors

In 2003 the rear mudguard and the side paneling are orange, the shrouds, lamp mask, and the front mudguard is also orange. The seat is all black. The KTM shroud logo was given a new design so as to cover the entire shroud. Frame and the hubs are power-coated in a gold hue, matching the color of the fork.