The powerful 249cm3 liquid cooled 4 stroke engine is tuned for high performance, with the wide powerband extending way into the over rev. Used for the first time in a mass-production machine, a new high-performance piston with bridge-boxed bottom features the same design as our factory racers.

Firmer urathane helps the seat maintain its original shape longer. The new two tone colour scheme gives a more factory look.

Bodywork components and seat design offer a slim, natural riding position that makes it easier for racers to go fast. Slimmer shroud design contributes to improved ergonomics. 

New thicker, wider radiators with more widely spaced cores/fins are stronger, offer better resistance to mud build up while maintaining cooling performance. Also lighter overall with reinforcing brackets unnecessary.

Low-friction titanium coating (a class first) smoothes fork action. Revised settings result in a less forward-leaning posture while new damping settings and a revised steering stem offer improved action and increased absorbtion performance. Kashima Coat further reduces friction.

Revised shock damping settings result in a reduced "kicking" tendency, facilitating corner entry. Dual compression adjustability offers a wide range of tuning options while Kashima Coat on the tank cylinder improves action.

All new factory-style graphics, two-tone seat, black alumnite rims and black fork guards give the 2010 KX250F the looks to match its highly tuned performance. Factory-style Renthal handlebar and pad also comes standard to save weight.

New steering stem and swingarm with revised cross-section offers lighter handling. Plus linkage mounts below the swingarm for more precise suspension tuning. Revised linkage ratios contribute to incresed rear wheel traction.