Babolat RPM Blast is one of the most recognizable polyester tennis strings available. Introduced to a wider audience through its association with Rafael Nadal, it is designed for players who produce fast swings and use heavy spin to control aggressive shots.
Its octagonal shape, high-density co-polyester construction and low-powered response make it particularly suitable for topspin-focused baseline players. However, its firm response and demanding power level mean it will not suit every player.
Babolat RPM Blast Rating
| Performance category | Rating |
|---|---|
| Power | 5/10 |
| Spin | 10/10 |
| Comfort | 6/10 |
| Control | 9/10 |
RPM Blast’s spin and control are its defining qualities. It provides very little effortless power, but advanced players can use that lower-powered response to swing aggressively without losing control of the ball.
Babolat RPM Blast Specifications
| Specification | Details |
|---|---|
| Material | High-density co-polyester |
| Construction | Monofilament |
| Shape | Octagonal |
| Available gauges | 18/1.20mm, 17/1.25mm, 16/1.30mm and 15L/1.35mm |
| Color | Black |
| Set length | 12m |
| Reel lengths | 100m and 200m |
| Country of origin | France |
| String type | Firm, spin-focused polyester |
RPM Blast uses a solid monofilament construction rather than bundles of smaller fibers. Its eight-sided profile differentiates it from a traditional round polyester, while its surface allows the strings to move and return during impact.
The string should not be described as having the same rough or visibly textured surface as RPM Blast Rough. Its spin production comes from a combination of its octagonal profile, controlled response, string movement and snapback.
Babolat RPM Blast Performance
Power
RPM Blast is a low-powered string that requires the player to generate pace through racket-head speed and complete strokes. It does not provide the effortless depth of natural gut, multifilament or a softer synthetic string.
This lower power level can benefit aggressive players. It provides additional freedom to accelerate through the ball without feeling that the string bed will launch shots unpredictably.
Players with compact or slower swings may struggle to create depth, particularly when RPM Blast is installed in a complete bed. A more powerful racket can compensate to some degree, but the string remains better suited to players who already generate their own pace.
Power rating: 5/10
Spin
Spin is RPM Blast’s strongest performance category. The octagonal profile can interact with the ball during contact, while the co-polyester surface allows the main strings to slide across the crosses.
As the displaced strings return toward their original positions, they contribute to snapback and additional ball rotation. This effect is most useful for players who already use fast, upward swings.
RPM Blast does not automatically create heavy topspin for a player with limited racket-head speed. Its construction supports an existing spin-producing technique rather than replacing it.
The 1.20mm and 1.25mm gauges should provide the easiest access to string movement and spin. Thicker versions trade some responsiveness for greater resistance to breakage.
Spin rating: 10/10
Control
RPM Blast’s firm construction and low power provide excellent control for long, aggressive swings. Players can accelerate through groundstrokes while using spin to bring the ball back inside the court.
The response is most predictable when the string is fresh and moving freely. As tension falls and the strings become notched, control and launch consistency may gradually decline.
Flat hitters can still benefit from the firm response, but they will not receive the same advantage from RPM Blast’s spin-focused design. Players who combine pace with heavy topspin are better positioned to use its complete performance profile.
Control rating: 9/10
Comfort and Feel
RPM Blast is firm, even when compared with many modern co-polyester strings. Its comfort can be acceptable for experienced polyester users, especially at a sensible tension, but it should not be presented as a soft string.
Independent evaluations have produced mixed comfort impressions. Some players find its string movement more forgiving than expected, while others experience a stiff response, particularly on flatter shots and off-center contact.
Players who are sensitive to firm strings should consider a softer setup or a hybrid. String choice cannot prevent or treat an existing injury, and persistent arm discomfort should be assessed appropriately.
Comfort rating: 6/10
Durability and Tension Maintenance
RPM Blast has strong physical durability. Its monofilament co-polyester construction can resist breakage well, making it suitable for heavy hitters who quickly damage softer strings.
Physical durability should not be confused with playability duration. RPM Blast may remain unbroken after its tension, snapback and predictable response have started to decline.
Tension loss can become noticeable after repeated use. As the strings notch and stop returning efficiently, the setup may provide less spin and feel increasingly firm or inconsistent.
Players should therefore monitor performance instead of waiting for the string to break. The guide explaining how often to change tennis strings covers the warning signs in more detail.
Choosing the Right RPM Blast Gauge
RPM Blast is available in four gauges, allowing players to adjust the balance between spin, feel, control and durability.
| Gauge | Best suited to |
|---|---|
| 1.20mm | Maximum responsiveness and spin |
| 1.25mm | Best overall balance of spin, control and durability |
| 1.30mm | Greater durability and a more stable response |
| 1.35mm | Frequent string breakers seeking maximum resistance |
The 1.25mm version is the most balanced starting point for many competitive players. It provides strong spin potential without sacrificing as much durability as the thinner 1.20mm option.
The 1.30mm and 1.35mm versions make more sense for powerful players who frequently break thinner polyester. They may feel firmer and provide slightly less string movement.
Players who are uncertain about the right material and gauge can use the Tennis String Finder for additional guidance.
Full Bed or Hybrid Setup?
Full Bed of RPM Blast
A complete bed provides the strongest combination of spin, control and durability. It is best suited to experienced players with fast swings who are comfortable using a firm polyester.
This setup can be demanding for beginners, slower swingers and players accustomed to softer strings. Using RPM Blast in both the mains and crosses also means that tension loss affects the entire string bed.
RPM Blast and RPM Soft Hybrid
Pairing RPM Blast with RPM Soft creates a more accessible setup. RPM Blast can provide spin and control, while the softer polyamide string adds flexibility and comfort.
Babolat’s hybrid places RPM Blast in the mains to prioritize its spin characteristics. The RPM Blast and RPM Soft hybrid review explains the combination in greater detail.
Players who like the RPM family but want a more comfortable complete setup can also consider Babolat RPM Soft on its own.
RPM Blast and Natural Gut Hybrid
Combining RPM Blast with natural gut creates a premium hybrid designed to balance spin, control, power, feel and comfort.
Placing RPM Blast in the mains makes the setup more spin and control focused. Placing natural gut in the mains allows its power, elasticity and comfort to dominate.
The Babolat RPM Blast and VS Natural Gut hybrid is the most direct ready-made version of this combination.
Tension Guidance
RPM Blast should always be installed within the racket manufacturer’s recommended range. Because it is firm and low powered, many players prefer it at a lower tension than they would use for natural gut, multifilament or synthetic gut.
The correct tension depends on the racket, gauge, string pattern, swing speed and whether RPM Blast is being used in a complete bed or hybrid. Players should avoid choosing an unnecessarily high tension purely to gain more control.
The Tennis String Tension Calculator can provide a practical starting point before discussing the final setup with a qualified stringer.
Who Should Use Babolat RPM Blast?
RPM Blast makes the most sense for:
- Intermediate to advanced players with complete strokes
- Aggressive baseliners
- Players who generate high racket-head speed
- Heavy topspin hitters
- Players who want a low-powered and controlled response
- Frequent string breakers
- Experienced polyester users
- Players building a spin-focused hybrid
Ability level alone is not the deciding factor. RPM Blast works best when the player has enough swing speed and technique to activate its spin potential.
Who Should Avoid It?
RPM Blast may not be suitable for:
- Beginners with short or developing strokes
- Players who need effortless power
- Players who prefer a soft or plush response
- Players who rarely restring their racket
- Players sensitive to firm polyester
- Flat hitters who will not benefit fully from its spin design
- Players seeking the longest possible tension maintenance
A player can continue using RPM Blast after the initial tension loss, but that does not mean its performance remains unchanged. Players who keep polyester installed for several months may be using the string well beyond its best playing period.
Pros and Cons
| Pros | Cons |
|---|---|
| Exceptional spin potential | Firm response |
| Excellent control on fast swings | Limited effortless power |
| Strong resistance to breakage | Noticeable tension loss |
| Predictable response when fresh | Demanding for slower swings |
| Available in four gauges | Can remain unbroken after losing playability |
| Effective in full beds and hybrids | Less suitable for comfort-focused players |
Babolat RPM Blast Compared With Other Strings
RPM Blast vs RPM Team
Babolat RPM Team is designed to provide a more forgiving response within the RPM family. It offers greater comfort and easier power, while RPM Blast provides a firmer response and stronger control for aggressive swings.
RPM Blast is the better choice for experienced heavy hitters prioritizing spin and precision. RPM Team makes more sense for players who want polyester performance without the full firmness of RPM Blast.
RPM Blast vs RPM Soft
RPM Soft is a polyamide monofilament rather than a traditional co-polyester. It provides considerably more comfort and easy depth but cannot match RPM Blast’s control, resistance to breakage or spin-focused response.
RPM Soft is better suited to players moving away from firm polyester. RPM Blast is more appropriate for advanced players who want to control powerful, topspin-heavy strokes.
RPM Blast vs Luxilon ALU Power
Luxilon ALU Power uses a round co-polyester construction and is known for its combination of control, responsiveness and direct feel.
RPM Blast is more specifically focused on spin and offers a more shaped profile. ALU Power provides a different type of feedback and may appeal more to players who want versatile control rather than the strongest possible topspin emphasis.
RPM Blast vs Solinco Hyper-G
Solinco Hyper-G is another shaped, low-powered co-polyester designed for spin and control.
Hyper-G uses a square profile, while RPM Blast uses an octagonal construction. Both suit fast swingers, and the final choice depends on the player’s preferred feel, gauge and response after tension loss.
Final Verdict
Babolat RPM Blast remains one of the strongest options for advanced players seeking spin, control and physical durability. Its octagonal high-density co-polyester construction is designed to support aggressive racket-head speed and heavy ball rotation.
Its lower power allows confident swings, but players must provide the acceleration needed to produce depth. The firm response and tension loss also make regular monitoring and restringing important.
RPM Blast is not the best universal polyester or the right choice for every ability level. For an experienced topspin player who generates their own power, however, it remains one of the most relevant spin-focused strings available.
Frequently Asked Questions
What is Babolat RPM Blast made from?
RPM Blast is made from high-density co-polyester and uses a solid monofilament construction. It is manufactured in France.
Is RPM Blast a shaped string?
Yes. RPM Blast has an octagonal profile with eight sides.
Is RPM Blast a rough string?
No. The standard RPM Blast has an octagonal shape but should not be confused with RPM Blast Rough. Its spin performance depends on its shape, string movement and snapback rather than a heavily textured surface.
Is RPM Blast powerful?
RPM Blast is relatively low powered. It is designed for players who generate pace through fast, complete swings and want a controlled response.
Is RPM Blast comfortable?
It offers reasonable comfort for some experienced polyester users, but it remains a firm string. Players prioritizing comfort should consider RPM Soft, natural gut, multifilament or a hybrid.
Is RPM Blast suitable for beginners?
It is generally not the best option for beginners. Its low power and firm response can make depth and comfort more difficult for players with slower or incomplete strokes.
Which RPM Blast gauge is best?
The 1.25mm gauge provides the best general balance of spin, control and durability. The 1.20mm version prioritizes responsiveness, while 1.30mm and 1.35mm provide greater resistance to breakage.
Does RPM Blast lose tension?
Yes. Its physical durability is strong, but tension and playability can decline before the string breaks. Players should monitor changes in control, comfort and snapback.
Can RPM Blast be used in a hybrid?
Yes. It can be combined with RPM Soft, natural gut or another softer string to improve comfort and power while preserving some of RPM Blast’s spin and control.
Is RPM Blast worth it?
It can be worth considering for advanced topspin players who value spin, control and durability. Players seeking easy power, maximum comfort or long tension stability may receive better results from a different string.