String comparison
Hyper-G vs Black Code
Solinco Hyper-G against Tecnifibre Black Code: ratings, specs and which one fits your junior.
The short answer
Both are polyester strings. Hyper-G leads on power, spin, control and tension hold. Black Code leads on comfort. For a junior with arm concerns, Black Code is the safer choice.
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 Hyper-G if…
- You want more power (7 vs 6 out of 10)
- You want more spin (10 vs 8 out of 10)
- You want more control (9 vs 8 out of 10)
- You want more tension hold (7 vs 6 out of 10)
- You restring often and want it cheaper to keep up (cost score 5/5 vs 4/5)
- Best for: heavy topspin players
- Best for: advanced juniors with fast, full swings
- Best for: players looking for spin + control at great value
Pick Black Code if…
- You want more comfort (7 vs 5 out of 10)
- Arm comfort comes first (arm friendliness 3/5 vs 2/5)
- Your player is younger (recommended from age 13 vs 14)
- Best for: aggressive baseliners who control points with heavy spin
- Best for: players wanting shaped poly comfort
- Best for: big hitters who swing hard
Specs side by side
| Spec | Hyper-G | Black Code |
|---|---|---|
| Type | Polyester | Polyester |
| Construction | Square-shaped co-polyester monofilament | Pentagonal co-polyester with Thermocore technology |
| Gauges | 15L, 16, 16L, 17, 18, 19, 20 | 16, 17, 18 |
| Stiffness | Medium high | Medium |
| Set price | $12–13 | $12–16 |
| Reel price | $165–175 | $130–160 |
| Arm friendliness | 2/5 · Low | 3/5 · Moderate |
| Cost to maintain | 5/5 | 4/5 |
| Recommended from | Age 14 | Age 13 |
| Levels | Advanced, Elite | Intermediate, Advanced |
| Play styles | Baseliner, Big hitter | Baseliner, Big hitter |
| Junior tension | 46-50 lbs for juniors. Square shape grips well so can string lower for more comfort. | 48-52 lbs for juniors. |
Hyper-G in short
Since 2014, Hyper-G has endured as the top string choice for tennis players around the globe. Developed for an ATP top 50 player, this shaped co-poly with an impressive combination of spin and precision allows big hitters to take massive cuts at the ball without having to worry about overhitting. The square profile with sharp edges bites the ball at contact, generating massive spin. Topspin players who like hitting balls that dive sharply and explode off the court should love this string. With an unmatched selection of 7 gauges from 15L to 20, there's a Hyper-G for every playing style.
Black Code in short
Tecnifibre Black Code is a co-poly with pentagonal profile for spin and Thermocore technology for comfort. "Dangerous in the hands of an aggressive baseliner who likes to control the point with heavy spin." The 5-sided profile provides powerful snapback for spin generation while Thermocore uses heating and cooling phases to soften the string. Playtesters found it "soft, plush and very comfortable for a polyester string" with muted impact feel that doesn't send jarring vibrations on off-center hits. Great value shaped poly.
Hyper-G vs Black Code: quick answers
Which has more spin, Hyper-G or Black Code?
Solinco Hyper-G, with a spin rating of 10/10 against 8/10.
Which is more arm-friendly for a junior?
Tecnifibre Black Code scores 3/5 for arm friendliness, against 2/5 for Hyper-G. It is recommended from age 13.
Which lasts longer?
They tie on durability (8/10). Tension maintenance: Hyper-G 7/10, Black Code 6/10.
Which is cheaper?
Hyper-G costs about $12–13 a set and Black Code about $12–16, at typical retail.
The short answer and the "pick if" lists are generated from our ratings and junior data only. Data verified 2025-01 (Hyper-G) and 2025-01 (Black Code).