Kirschbaum Max Power 1.25 is a firm co-polyester tennis string designed for aggressive players who prioritize precise control, consistent response, and direct ball feedback. Its smooth, round monofilament construction delivers a predictable, low-powered response that allows players to swing confidently without sacrificing accuracy. The 1.25 mm diameter offers a more responsive feel and greater spin potential than the thicker 1.30 mm version, with a trade-off in durability.
Intermediate to advanced players with fast, full swings who generate their own power and prefer a firm, controlled stringbed. Particularly suited for competitive baseliners and all-court players who value precision, tension stability, and a crisp feel over softness and easy power.
| Material | Co-polyester |
| Construction | Round monofilament |
| Gauge | 17 / 1.25 mm |
| Length | 660 ft / 200 m |
| Surface | Smooth |