Engine & Fueling: The 300 SX features a \(293\text{cc}\) two-stroke engine with Electronic Fuel Injection (EFI) via a \(39\text{mm}\) throttle body, offering linear, powerful delivery without the need for traditional carburetor jetting.

Power Output: As tested, the bike produces around \(55\) horsepower, rivalling or surpassing some 450cc four-stroke bikes in peak power.

Chassis and Suspension: It uses a new, more rigid steel frame designed for better handling and anti-squat characteristics. Suspension is handled by WP Xact air forks and a new shock layout, often praised for improved bottoming resistance.

Technology: Features electric starting (no kickstarter) and a map switch to alter power delivery, allowing for more aggressive or mellow power options.

New Engine & Frame: The bike represents a complete redesign from previous 250/300 SX models

Electronic Power Valve: Instead of a mechanical system, an electronic valve works with the ECU and EFI for precise control.

Increased Weight: The addition of a battery, starter motor, and new frame resulted in a weight increase of about \(8\text{ lbs}\) compared to the 2022 250SX