Tecnifibre Triax

Tecnifibre Triax Review and Play Test

String: Tecnifibre Triax (16 1.33 mm)
Construction: Multifilament (50% Nylon fibers/50 %Polyester fibers)
Racket Used: Babolat Aeropro Drive 2013
Cost: $21

Triax – What You Need to Know

Similar to RPX, Tecnifibre Triax is essentially a firmer feeling multifilament. It’s another one of these multi/poly fusion tennis strings that Tecnifibre has been focusing on recently. At the end of the day it’s really just a multifilament that frays and breaks in about 6 hours of heavy hitting. Surprisingly on groundstokes I found Triax to put more strain on my arm compared to Hyper-G. I’m sure Triax is a softer string but something about the feel off the string bed gave me the impression it was very stiff. There is a fair bit of control (you can swing hard and it stays in) but likely not enough for players with big fast swings at the ball. Spin potential is low compared to most polyesters so it can be frustrating to take a massive rip and not see any late dive on the ball. Feels good on serves and on volleys like with RPX but again I have to stress I think you’ll benefit more from a traditional hybrid than a full bed of Tecnifibre Triax.

Triax – What I Loved

Strings like this usually have a tendency to move around a lot. This one doesn’t do that so that’s nice. I was surprised at the spin I could generate on slice and kick serves. In general I enjoyed serving with this string and felt confident on my punch volleys where with polyester strings I almost always elect to drop volley.

Triax – What I Hated

Durability is just as low as pretty much any other multifilament so I struggle to see who would really benefit from this string versus a traditional poly/multi hybrid. The ball doesn’t feel great off the string bed and doesn’t have the spin potential anyone with bigger swings would need or expect.


Given the speed of the break the value is not good. If you hit flatter you’ll probably be able to get more time out of this string than a traditional multifilament but not by much.

Who this string IS for

Not really sure. I could see some players using this as a cross string with a firm polyester in the mains but apart from that a standard hybrid can accomplish a lot more especially with feel.

Who this string is NOT for

Players who love a crisp pop response will be disappointed by the plasticky firmness you’ll feel off the string bed with Triax. If you take big cuts at the ball will get frustrated with the lack of spin potential and occasional ball flying (for me always on defensive slices). Players that really need to protect their arms will benefit way more from NRG that I think performs similarly to Triax in the control department.

Final Verdict

I preferred RPX a little bit more than Triax despite the price differential. That being said I can’t imagine I would use either string ever again. This string just doesn’t do it for me and as I said with RPX I think if I was transitioning away from Polyester strings I would go hybrid first and then full on multi or natural gut. The description that you’ll read on tenniswarehouse matches up with my experience but it’s just not the right fit for me and probably won’t be for most players. Interesting concept and tech from Tecnifibre but likely needs more refinement to get a string that pops like a polyester but feels soft and pockets like a multifilament.