Dunlop SX300 LS Tennis Racquet

The Dunlop SX300 LS 2025 tennis racquet was launched in January 2025.

Weight: 285 grams (unstrung)

Headsize: 100 square inches

Length: 27 inches

String Pattern: 16 x 19

Balance: 6 points HL (unstrung)

Spin Boost XT Grommets which increase the diameter of the grommet holes in the yolk area by 58%. The larger grommet holes create movement of the main vertical strings increasing spin performance.

Grommets at the top of the racquet now offer more string movement generating more spin. The string bed is also more forgiving effectively enlarging the sweet spot.  

Spin Boost Frame Geometry: The outside stiffness of the frame has been increased  leading to decreased deformation of the frame shape on impact, resulting in more ball speed and spin. The Shape of the frame increased the front width by 8% which means an increase in racquet stability on impact. 

Vibroshield: A vibration dampening material positioned in the 3 & 9 o’clock and throat area of the racquet. 

The high elasticity properties of Vibroshield helps reduce vibration, meaning more comfort when hitting. 

Spin Boost String Tech: The string bed has been designed to create more even power distribution, especially towards the top of the racquet. The open string pattern allows for more string movement and power and spin generation. The reduced cross string spacing in the centre results in more control. This combination results in the sweet spot being extended to the top of the racquet and becoming up to 30% larger overall. 

V-Energy Shaft: A unique V shape frame geometry in the shaft area of the racquet. This increases shaft flexibility to enhance ball bite and power.