All the 2-stroke versions – including the 300 SS – have the following new features, designed to give the bikes a more technically polished feel.
Engines (except the 125 cc) feature a cylinder with a new exhaust port geometry and new timing curves. Both of these developments improve low-rev engine control and stabilize the power delivery, providing exceptional, stock-setting performance.
Moreover, a new gear selector cam has been designed which was used in the earlier Factory models, and provides more positive shifting.
Another Factory model feature is the new CDI control unit, now with even better performance and optimized mapping for the new cylinder.

Chassis
Much of the attention was directed at the chassis set-up, with a series of new features on both the 2-stroke and 4-stroke models:

• New shock absorber port geometry: now higher and more progressive;
• New shock absorber piston: increased suspension sensitivity and progression. Together with the modified plug geometry, the new piston generates decidedly more grip, making it more forgiving in the event of rider error;
• New pump on mechanical side of fork: ensures more progressive impact absorption;
• New fork oil: improves stability at high temperatures, maximizing smoothness;
• Renewed chain tensioner: adjustment range now wider while making adjustments easier;
• Rear brake caliper with brake pad anti-vibration system: maximizes precision and significantly reducing noise;
• New graphics and colors