Quick answer: for maximum spin, look for shaped or textured co-polyester strings — those with sharp, angular or twisted profiles grip the ball more aggressively on contact. Popular spin-focused options include Babolat RPM Blast, Luxilon ALU Power Spin, Solinco Hyper-G and Yonex Poly Tour Spin. Thinner gauges (1.20mm-1.25mm) generally add extra bite, at the cost of shorter durability.
What actually creates spin
Spin comes from the strings snapping back and "gripping" the ball as it slides across the stringbed at contact. Three things affect this most: string shape, string stiffness, and string pattern.
String shape
Round strings are the baseline. Shaped strings — pentagonal, hexagonal, or twisted profiles — create sharper edges that bite into the ball more, generating extra spin compared to a smooth round string of the same material.
String stiffness
Stiffer co-polyester strings snap back faster after deforming on contact, which helps impart spin, especially for players with a fast, aggressive swing. Softer multifilament or synthetic gut strings are more forgiving and comfortable but generate noticeably less spin.
String pattern
An open pattern (16 mains x 19 crosses) leaves more room for the mains to move and snap back, boosting spin potential. A dense pattern (18x20) restricts that movement, trading some spin for more control and durability. Pairing an open-pattern racket with a shaped poly string tends to produce the most spin overall.
Popular spin-focused strings
- Babolat RPM Blast: a long-standing favourite on tour, octagonal profile, strong spin with reasonable durability.
- Luxilon ALU Power Spin: a spin-oriented version of the classic ALU Power, shaped profile for extra bite.
- Solinco Hyper-G: a popular high-spin, relatively soft-feeling co-poly with a pentagonal shape.
- Yonex Poly Tour Spin: a hexagonal profile string designed specifically to maximise spin potential.
Trade-offs to consider
Thinner gauges and sharper shapes generate more spin but wear out and lose their bite faster — often within a few sessions for regular players. If you restring often, this is a reasonable trade. If you don't, a slightly thicker gauge or a hybrid setup (spin string in the mains, a more durable string in the crosses) can balance spin against string life.
Our recommendation
If you're new to poly strings, start with a mid-gauge shaped co-poly like RPM Blast or Hyper-G at a moderate tension, and have your stringer keep an eye on how quickly it loses shape — that will tell you whether to size down for more spin or size up for more durability next time.