I got my hands on the new Tecnifibre Razor Spin a little after Jonas put out his first look at the string, and after a full playtest I have to say I quite like it. That might come as a surprise from me, because I’m usually not a fan of four-sided strings. Square profiles tend to make it harder to control the ball left to right once they bite in and rotate in the string bed. Razor Spin is the exception that’s made me reconsider that bias a bit.
A Nice Mix of Aggressive and Controlled
What stood out to me right away is how Razor Spin balances spin and control. It’s clearly an aggressive, bite-heavy string, but it never felt like it was fighting me on direction the way some shaped polys do. That makes a lot of sense once you consider where it comes from. Razor Spin is derived from Razor Soft, which, despite the name, is a firm and very control-oriented string rather than a soft, forgiving one. You can feel that DNA in Razor Spin. It grabs the ball aggressively, but the control underneath is still there.
How It Played
For the first two to three hours, this was close to an amazing string for me. The control was excellent, and it had that same satisfying Razor Soft character to it, a crisp, almost gunshot-like sound off the strings, paired with a response that still felt dialed in and predictable. It’s not a soft string by any means, but in those early hours it also wasn’t harsh on the arm. That combination of pop, control, and a relatively comfortable feel is a hard one to nail with a square profile.
The Three-Hour Wall
Here’s the catch, and it’s the main reason I can’t give Razor Spin a blanket recommendation. Somewhere around the third hour of play, things changed. Whether it was the tension dropping off faster than expected or the shape locking up after enough impacts, the string started feeling noticeably harsher and less controlled than it had earlier in the session. My arm started to feel it too, which hadn’t been an issue at all in the first couple of hours.
I can’t say for certain whether that’s purely a material thing or something specific to how this construction handles repeated impact, but the practical takeaway is the same either way: Razor Spin is a string you’ll likely want to restring more often than some of the other options on the market right now. If you’re someone who likes to leave a string in for a long stretch between restrings, this probably isn’t the string for that approach.
Setup and Tension
I strung my set in a Nordicdots Model 98 Pro at around 21 kilos (roughly 46 lbs). For me, that tension struck a good balance. I never felt like I was sacrificing too much power, but I also never felt overwhelmed by the string’s bite. Given that Razor Spin plays a bit firmer than Razor Soft, I’d lean toward stringing it on the softer end of your usual range, especially if you’re testing it in a more control-oriented or already stiff frame.
Who Should Try It
Because of the durability question, I’d file Razor Spin under pure performance rather than a string you reach for because you want it to last. If you’re the type of player who restrings often anyway, or you only need a string for a tournament or a big match, this is an easy recommendation. You get genuinely good spin, real control, and a comfortable enough feel in the early hours to make it worth the extra stringing.
Summary
Tecnifibre now has a properly spin-oriented string sitting alongside Razor and Razor Soft in the lineup, and it’s a strong addition. Razor Spin gives you real bite and control without the unpredictability that usually comes with four-sided profiles, and it’s not too harsh on the arm out of the gate. Just budget for more frequent restrings than you might be used to. If you’re already a fan of Razor or Razor Soft, this one is well worth trying out on court.
Buy it via these links at Tennis Warehouse or at Tennis Warehouse Europe (code TNERD10 for 10% discount).
