The 2027 RX 250F 4-Stroke is all-new from the ground up. The engine is a dual overhead cam with a piston design that came straight from F1 technology. Featuring electric start and dual-injector fuel injection, the power output is extremely competitive straight out of the box. This new power plant was designed and manufactured in Florence, Italy, in-house, ensuring the Italian passion is alive and well.

The dual-injector electronic fuel injection system utilizes a 46mm tapered throttle body to deliver optimal air-fuel dispersion across the entire rev range, maximizing low-end throttle response while sustaining maximum power at high RPMs.”. This new component comes straight from the AMA Supercross team as well as the MXGP team in Europe. It provides increased air speed and volume to the motor which enhances the low-to-midrange power overall while providing a quicker throttle response across the board.

The RX 250F 4-Stroke benefits from a frame designed to meet the specific needs of a 250F size and feel. Compared to the central engine connection solution used on its big brother model, the design features side-mounted engine head mounts: an engineering choice that increases torsional stiffness while maintaining greater vertical flexibility. The result is a new balance between cornering precision and suspension performance, with significant benefits in traction and stability.

Completing the entire package is the tried-and-true suspension system, KYB front fork and rear shock, valved with specific settings developed to suit the lighter weight of the rider and bike. KYB suspension is the industry leader in Supercross and Motocross and was the only choice for the new RX 250F 4-Stroke.

With its all-new, high-output engine, precision-tuned chassis, and industry-leading suspension, the 2027 RX 250F 4-Stroke isn’t just built to compete—it’s engineered to set a new benchmark for what a 250cc four-stroke can do.