String comparison
RPM Blast vs Poly Tour Rev
Babolat RPM Blast against Yonex Poly Tour Rev: ratings, specs and which one fits your junior.
The short answer
Both are polyester strings. RPM Blast leads on power and spin. Poly Tour Rev leads on comfort, durability and tension hold. They score the same for arm friendliness (2/5). Poly Tour Rev costs less per set.
Ratings
Power
Spin
Control
Comfort
Durability
Tension hold
Ratings are on a 1–10 scale. The higher score is in bold when they differ.
Pick RPM Blast if…
- You want more power (6 vs 5 out of 10)
- You want more spin (10 vs 9 out of 10)
- Your player is younger (recommended from age 14 vs 15)
- Best for: heavy topspin players
- Best for: advanced juniors with fast, full swings
- Best for: western/semi-western grip users
Pick Poly Tour Rev if…
- You want more comfort (6 vs 5 out of 10)
- You want more durability (8 vs 7 out of 10)
- You want more tension hold (8 vs 5 out of 10)
- You want to spend less (from $16 vs $20 a set)
- Best for: high-performance players confident in their strokes
- Best for: spin seekers wanting control
- Best for: those wanting muted, comfortable poly feel
Specs side by side
| Spec | RPM Blast | Poly Tour Rev |
|---|---|---|
| Type | Polyester | Polyester |
| Construction | Octagonal high-density co-polyester monofilament | Octagonal co-polyester monofilament with SIF (Silicone-Infused Filament) technology |
| Gauges | 16, 17, 18 | 16, 16L, 17 |
| Stiffness | Medium high | High |
| Set price | $20–21 | $16–20 |
| Reel price | $130–150 | $170–200 |
| Arm friendliness | 2/5 · Low | 2/5 · Low |
| Cost to maintain | 3/5 | 3/5 |
| Recommended from | Age 14 | Age 15 |
| Levels | Advanced, Elite | Advanced, Elite |
| Play styles | Baseliner, Big hitter | Baseliner, Big hitter |
| Junior tension | 46-50 lbs for juniors. String lower to unlock spin potential. Loses tension quickly so some players string 2-3 lbs higher. | 46-50 lbs for juniors. String low - stiffest in Yonex range. |
RPM Blast in short
Babolat RPM Blast is one of the most iconic co-polyester strings ever made. When Rafael Nadal showed up at the 2010 Australian Open with this octagonally shaped co-poly, it changed the game. The octagonal structure with high-density co-polyester adds phenomenal rotation to the ball. The slick surface enables the strings to snap back with vicious force, resulting in extra RPMs. One of the most popular co-polys of all time, this firm and durable string is perfect for big hitters looking to load the ball with pace and spin.
Poly Tour Rev in short
Yonex Poly Tour Rev features an octagonal shape for extra bite plus SIF (Silicone-Infused Filament) technology to increase string snapback and spin potential. The stiffest in the Yonex Polytour range - a bit stiffer, crisper and more control-oriented than Poly Tour Pro. "Definitely more control oriented, which is exactly what I need for attacking tennis." Firm but muted, which helps comfort. Above-average tension maintenance in lab testing. A big string for high-performance players - not for beginners. Good for players with arm pain wanting comfort without power loss.
RPM Blast vs Poly Tour Rev: quick answers
Which has more spin, RPM Blast or Poly Tour Rev?
Babolat RPM Blast, with a spin rating of 10/10 against 9/10.
Which is more arm-friendly for a junior?
They score the same, 2/5. RPM Blast is recommended from age 14 and Poly Tour Rev from age 15.
Which lasts longer?
Yonex Poly Tour Rev rates 8/10 for durability against 7/10.
Which is cheaper?
RPM Blast costs about $20–21 a set and Poly Tour Rev about $16–20, at typical retail.
The short answer and the "pick if" lists are generated from our ratings and junior data only. Data verified 2025-01 (RPM Blast) and 2025-01 (Poly Tour Rev).