

Topspin Stringergy Power String Set
Maximum power, spin and control
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Whether your strings are snapping, your balls are bouncing wild, or your order’s causing trouble – Boris is on the line and ready to serve you!
- Color: black
- Execution: Set
- Player type: Rebels
- Length: 12m
- Material: Co-Polyester
- Structure: monofilament
Stringergy Duplex tennis string
The Stringergy Duplex tennis string represents an absolute world first in stringing technology. This hybrid string combines unique material properties and advanced coatings to offer players unparalleled performance.
Features and Benefits:
- Unique String Coating : Designed to minimize loss of string tension and maintain even stringing longer, resulting in more consistent playability.
- Hybrid System : Combines two differently coated polyester strings for maximum performance:
- Main string : Seven-edge polyester string that "bites" into the ball and generates incredible spin.
- Cross string : Smooth polyester string that provides power and control.
- Maximum spin, power and control : The hybrid system enables an optimal balance between spin, power and control that can be felt on the court.
- Newly developed coating : Reduces friction and notching of the string and makes stringing much easier.
- Longer durability : The special coating helps maintain string tension for longer, extending string life and playability.
- Optimal stringing pattern : Ensures even stringing and improves the overall performance of the racket.
The Stringergy Duplex tennis string is the perfect choice for tennis players looking for a durable, high-performance and spin-friendly string system.
Shipping:
Shipping within Germany is free for orders over 89 €. Information on shipping costs for other countries can be found in our shipping guidelines .
Return:
Please note that in the event of a return, you will be responsible for the direct return shipping costs. You can find further information on your right of cancellation there.
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Characteristics






The perfect tennis string for your playing style
Whether you are a beginner, all-rounder or tennis rebel – we have the right string for you!
SOFTIES – For Beginners
Our "Softies" strings offer you a gentle entry-level experience with the perfect combination of control, power and comfort.
ALLROUNDER – For recreational players
Whether you are a hobby or recreational player – enjoy a balanced playing experience with perfect balance.
REBELS – For the Ambitious
Have you been on the court since childhood? Our strings deliver maximum performance for your next level.
Find the perfect tennis string for your game now
Frequently Asked Questions
tennis strings
There are three main types of tennis strings: monofilament, multifilament and hybrid. Monofilament strings are made from a single thread, usually polyester or co-polyester, and offer high durability and control. Multifilament strings are made from several thin fibers and offer a better feel for the ball as well as more power and spin. Hybrid strings combine two different types of string to combine the benefits of control, power and spin.
Tennis strings can be made of natural gut or synthetic materials . Natural gut strings offer a unique feel, while synthetic strings such as polyester or co-polyester are more cost-effective and offer particularly high durability and control. Today, polyester tennis strings and co-polyester strings are the most common materials that provide spin, power and durability.
Tennis string diameters vary from 1.05mm to 1.45mm . Thinner strings offer more power and spin, but are less durable. Thicker strings offer more control and are more durable, but reduce power and spin. For beginners and recreational players, medium diameters (1.23mm to 1.27mm) offer a balanced mix of control, durability, power and comfort.
The tension of the strings has a big impact on your game. A lower tension (close to 20 kg) provides more power, comfort, touch and spin, as the ball is in contact with the string for longer. A higher tension (close to 30 kg), on the other hand, increases control and durability. For beginners and recreational players, a medium tension of around 24-25 kg is ideal to achieve an optimal balance between power, control and comfort.
The string pattern describes the arrangement of the strings in your racket. An open string pattern (eg 16 x 19) promotes more power and spin because the strings are further apart. A tighter string pattern (eg 18 x 20) provides more control and precision because the strings are closer together.
An open string pattern benefits from thinner strings (under 1.25 mm) as they increase power and spin, but at the expense of control and durability. With a tight string pattern, thicker strings (from 1.27 mm) are advantageous as they offer more control and increase durability.
Tennis strings influence six key playing characteristics: comfort , power , durability , control , touch and spin . Depending on the material and construction of a string, one of these characteristics is particularly pronounced. Modern multifilament and hybrid strings often combine several advantages so that you can achieve the optimal playing feel.
There are several signs that your tennis strings are worn out:
- Sound: If the sound changes when the ball hits the ball, this could be a sign of wear.
- Shifting: If the strings shift significantly or seem “loose,” this is an indication that they should be replaced.
- Thread wear: Deep cuts at the crossing points of the strings indicate that the strings have been heavily stressed and may soon break.
Even if the tennis strings are not broken, they lose their playing properties over time. They become softer, lose control and no longer absorb vibrations optimally. Changing your strings regularly ensures that you are always playing with strings that deliver their full performance and optimally support your game.
A simple rule of thumb is to change your tennis strings as often as you practice per week. For example, if you play three times a week, it is recommended that you change your strings at least three times a year. Tournament players and professionals restring their rackets even more often. If a string breaks, the racket should be restrung immediately.

topspin
The Tennis Rebels since 1987
For over 30 years we have been breaking norms and setting new standards in tennis. Topspin stands for individuality, passion and uncompromising quality - ideal for players who do not adapt but define their own game.
Our innovative tennis strings for control and spin, non-slip tennis grips for a perfect hold and precisely tuned tennis rackets for every level of play help you reach your full potential. Whether powerful groundstrokes, aggressive spin or maximum precision - with our equipment you always make the right choice.

Maximum performance
The perfect string for your game
Whether you're a softie, an all-rounder or a rebel - we have the perfect tennis string for you! We have been testing and optimizing strings for decades to offer every type of player the best material. Our strings offer the optimal balance of control, power and durability so that you can reach your full potential. Through years of research and innovative technologies, we ensure maximum precision, feel and durability. Feel the difference on the court - with a string that is perfectly tailored to your game!

From players for players
Innovation meets experience
For us, tennis is more than a sport - it's our DNA. Since 1987, we have been developing equipment that combines performance and precision. Our Topspin tennis rackets are perfectly balanced, our tennis grips are non-slip and sweat-absorbent, and our tennis strings are tailored to the highest playing standards. We use the latest technologies and develop products that give modern players the decisive advantage. Whether you're looking for a non-slip tennis grip for the best grip or a high-quality tennis string for more spin and control - you'll find exactly what you're looking for with us.