Dunlop SX Racquet Review

by Jonas Eriksson

The Dunlop SX series of racquets is out and it is all about spin. And like most spin-focused racquets, they are yellow. Here is my Dunlop SX racquet review.

Spin generation is important in tennis. It will allow you to hit with bigger margins and more racquet head speed. To maximize spin potential there are frames with grommets that allow for more string movement and an aerodynamic design to help the racquet travel through the air faster. The Aero Pro Drive kind of started the trend, but now most manufacturers have a spin-focused line of racquets. In Dunlop’s case, they call it the SX.

Dunlop SX Racquets – Specs and Tech

So the Dunlop SX line is all about spin. This line is engineered with so-called Spin Boost technology, with grommets that enable more string movement for enhanced spin and a V-shaft for better aerodynamics. They come constructed with the shock-absorbing material Infinergy by BASF. Infinergy is an elastic particle foam, similar to rubber but lighter. It is adapted for tennis racquets as “Sonic Core” technology which is supposed to increase rebound, meaning a faster ball speed from the racquet. This material and layup were first introduced in the impressive CX series which a control-based line-up. The SX is all about spin and there are two more racquet lines to come from Dunlop all along their elements theme.

Another technology in the SX line is Power Grid, which is supposed to create a larger sweet spot. This is nothing new either to be honest, with a tighter string pattern in the center and a wider string spacing towards the edges. The idea is to give the player more power, spin, and comfort when you hit outside the sweet spot.

What racquets belong to the Dunlop SX series?

The SX series comes with five racquets, the Tour, the 300, the 300 LS, the 300 Lite, and the SX 600. The main difference between these five racquets is the weight and stiffness. They are all 100 sq inches, 27 inches, 16×19 string pattern, except for the SX 600 which is slightly extended and has a 105 sq inch head. The stiffness ratings on the 300 Tour and 300 are impressively low at 64 unstrung, which brings it down to low 60s. The other racquets are bumped up a bit to increase the stability despite the low weight.

For my game, I focused on the 300 Tour and the 300. The other racquets are suitable for players with more medium swings or more advanced players that like to customize their gear.

Design and Playability

First I want to mention paint job and quality. The quality of the racquets and the paint seem very high. These racquets do not chip easily. The bag to go along with the racquet is also high quality, functional, solid.

For some reason, spin racquets need to be yellow. I guess Babolat started it with their Aero Pro Drive and this one definitely plays similar to the Pure Aero and the HEAD Extreme. The SX series comes with an interesting throat design. Similar to the Aero, but with large channels on the side and a curved design. All in the name of aerodynamics and spin generation.

The racquet does play a bit more comfortable than both those racquets but offer similar marks on spin and power. There are so many similarities in feel and performance to other racquets, that it will be hard for this one to stand out in the marketplace perhaps. But it is a high-quality product and the slightly better comfort should appeal to discerning players.

It is definitely a racquet for players who like to swing big and play with margins. They excelled on serves and from the baseline, but touch and volleys were not as good, as to be expected from this type of racquet. It is not worse by any means than the other racquets in this category and if you want a control and touch-oriented stick, you check out the CX series instead.

How does it play?

I think the power grid makes sense and it helps when you hit flatter shots in the center of the string bed as that part is really tight and controlled. But I felt like I do need to adjust my spin to play with more spin, so this is definitely more suitable for power-hitting baseliners or players who need help generating depth and power on their shots. I got really easy access to power and spin and did not have to work as hard to win points. I did struggle with control at times, but it is mainly because I switch in between more control-oriented racquets and this one.

My favorite was the Tour version with its hefty swing weight I felt like I could both block back shots and hit with massive pace. Some shots just explode of the string bed. The 300 version is a bit easier to use, but still a decent swing weight in the 330s.

So if you don’t mind some heft and really value stability, go with the Tour. If you want something slightly lighter to swing, go with the 300. If you want a racquet that is lighter to swing or a stick that is ready for customization with perhaps some lead tape in the hoop and silicone in the handle, choose one of the 300 Lite or 300 LS racquets. For lovers of oversized and extended-length racquets, the 600 could be interesting. But most players would like to add weight to that one.

How they compare

How do the SX racquets compare to the HEAD Extreme and the Pure Aero? I must say that they play remarkably similar, but with a bit better comfort. If I would choose between them all, my choice would be the Dunlop SX 300 Tour. It is my favorite racquet of the bunch and a fun racquet to use, but a bit too powerful for my liking.

There is no doubt that Dunlop makes some high-quality racquets and I am keen to see what the other two lines in their Elements theme will be. I hope they create something a bit more unique for their next racquet line. The CX line was brilliant, this one is good, but I would have loved to see a bit more innovation.

What do you think of the Dunlop SX series? Please comment below.

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Alec Wasa January 16, 2020 - 18:12

I love reading Tenninerd but in this case I have to agree to disagree ……You write “but I would have loved to see a bit more innovation”…….this does not sound very fair. I mean, who is REALLY innovating anything in tennis racquets these days…..? Or has there been ANY significant “innovation” in tennis racquets in the last 10-15 years….? I would say that most “experts” would agree on that the answer is simply “NO”. It is still a mix of weight, balance, stiffness, string layout, swing weight, frame design etc and it is all about physics at the end of the day.

You also seem to mention that these SX racquets seem to play very good although very similar to other similar racquets, but the SX seem a bit more comfortable. That sounds pretty good I would say :)

The remarks here in this review applies then to all racquet reviews I would guess. The fact is that any racquet today that has similar specs will by the laws of physics play remarkably similar. That is the plain truth about tennis racquets.

Tennisnerd January 17, 2020 - 07:59

Well, in general, I agree that there is little “innovation”. I think the Wilson Clash is the most innovative frame in years. It doesn’t mean it is great for everyone, but at least it was a bold attempt. I don’t want to be harsh on the SX series, but what bothers me a bit is this:

*Black/yellow spin frame (Aero, Extreme)
*Spin Boost grommets (Aero, Extreme)
*Aero throat design (Aero)

I know it is difficult to innovate in tennis and the SX series are good racquets. I also understand the idea to make another black/yellow spin frame since that has now become the identifier for this style of racquet. Dunlop make some really good frames, I love the CX series for example, so this is not a criticism towards them, it was more a dig towards the industry of tennis racquets (which is in fairness not dissimilar to other industries).

Cheers / J

Alec Wasa February 18, 2020 - 08:11

Great reply Jonas. Sorry if I sounded negative. Love your website and your articles. It is actually really surprising that there are so few websites where one can read about tennis equipment. With millions of players around the world, it is remarkable that so few “quality” tennis websites .

Where I live, until this year, it was not possible to playtest tennis racquets (except in a few clubs) and the only way to do some research into racquets was through websites such as TennisNerd and Tennis Warehouse.

Reviews are always tricky as it depends so much on the playtester’s level. Your level for example is higher than mine and I could never play with a racquet that weights 340 or 350 grams (strung). I have tried a few times and for sure I can hit decently from the baseline but in a match, my level suffers too much from a heavy racquet and serving for 2 hours with such a heavy frame, would just kill my shoulder.

Therefore, the racquets that you seem to like, are not my cup of tea. I once bought the Yonex DR 98 as it was seen as a great racquet by everyone. I sold it after 1 months of playing with it as was too heavy and cumbersome for me. These days, I have settled with racquets in the 300-305 grams (unstrung) range. Unfortunately the 300 grams tweeners suit me bad as they have too much power (unless strung really tight) and some of the 305 gram frames have too big swingweight for me. Also had a really bad tennis elbow a few years ago and sometimes it comes back ever so slight to remind me not to use too stiff racquets….

Any suggestions about a 300-305 gram racquets that is comfortable and not too powerful with a swingweight around 317-322 ?

Gareth July 12, 2020 - 10:27

Alec, you definitely want to try the Wilson clash 100 Pro/tour. Most gentle frame on the elbow on the market has everything you need. Low swing weight, midling weight to allow tape (get the pro/tour as it’s heaviest is more gentle on the arm and is more head light so less swing weight) (or get the 98)

Imtiaz Kamiss May 31, 2021 - 11:05

Hi, I just ordered a SX300, 305. What is a good string and tension use?

TN May 31, 2021 - 12:23

Hi, try their Dunlop Explosive Spin – it worked well with that racquet. Go around 50-51 lbs.

Daniel February 3, 2022 - 15:32

Hi there, may i know if there’s any modifications that i can do to make my sx300 feels like a sx300 tour? Eg, adding of lead weights etc?


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