Dunlop SX 300 (2025)

What it is

Mid-court ball sitting up—you take a low-to-high cut and watch it kick with arc instead of sailing flat long. That’s the Dunlop SX 300 (2025) in one picture: Dunlop’s 100 sq in club spin flagship, not the denser SX 300 Tour (98 / 305 g), not the lighter LS / Lite.

US retail naming (Oct 2026): Dunlop Sports US sells it as SX 300 Tennis Racket (SKU 10361527 / also listed as SX300-25), Teal / Neon Yellow. Tennis Warehouse titles it Dunlop SX 300 Racquet 2025. Same frame either way—100 in², 300 g unstrung (~318 g / 11.2 oz strung), open 16×19, beam 23 / 26 / 23 mm, unstrung balance ~7 pts HL (TW strung ~4 pts HL). TW lab: swingweight 318, stiffness 69 (HIGH). 2025 updates per Dunlop / TW: wider face at 3 and 9 o’clock for torsional stability, widened Spin Boost XT grommets in the yoke for more string movement, Vibroshield dampening in shaft and hoop, plus Sonic Core Infinergy (BASF TPU) in the upper hoop. Sold unstrung. US street: $249.99 locked on Dunlop US and Tennis Warehouse.

What club players actually buy: the stock 300 g / 100 / 16×19 SX 300—not the Tour 98, not the LS/Lite—if they want the spin story most shops demo.

Who it’s for

Serious recreational and club players (roughly 3.5–4.5) with medium-to-full, low-to-high swings who want shape and dip from a fast 100. Baseliners who roll both wings and use spin as margin. Strong fit if Pure Aero’s launch feels wild or the beam too boardy, if VCORE’s $305 sticker stings, or if you want a customization platform that’s light enough to swing out of the bag and still take lead at 3/9/12.

Skip it if you flatten lasers through tiny windows and already overhit open 16×19s (look at denser 98s—Blade / Percept / TFight / SX 300 Tour lane), if you need Pure Drive–level trampoline without asking for spin, or if arm comfort is the whole brief—TW RA 69 and playtester notes keep calling the feel firm, Vibroshield or not. Flat hitters who won’t brush will fight the launch until string and tension dial it down.

Standout details

• Specs that matter (Dunlop / TW): 100 in² · 300 g unstrung / ~318 g strung · ~4 pts HL strung · SW 318 · RA 69 · 16×19 · 45–65 lbs (opt. ~55) · beam 23/26/23 · Teal/Yellow · ships unstrung · US street $249.99
• Spin (the franchise): TW playtest Topspin 9.1—open pattern + Spin Boost XT grommets + rounded thicker beam geometry; the reason SX sits in the spin-family conversation next to Aero and VCORE
• Power: TW Power 8.5—easy depth and net clearance when you brush; some testers called it less trampoline than Aero, others found plenty of pop—spin is how you keep it honest
• Control: TW Control 8.1—spin-and-margin, not Blade lasers; playtesters flagged inconsistent / high launch when they forgot to brush
• Comfort: TW Comfort 8.0 with a firm, fast leave—Vibroshield and Sonic Core help, but this is still a stiff spin 100, not Clash / Percept plush
• Value: $250 vs Pure Aero $299 and VCORE 100 $305—same club recipe (100 / 300 g / 16×19), clearer price gap than most spin peers
• Tradeoffs: Firm feel isn’t for everyone; launch can spray without topspin; $250 is still real money; Tour/LS/Lite are different sticks—don’t mix them up online

Who’s hitting it

Dunlop’s Japanese athlete page lists Michael Mmoh on SX 300 (with the usual “pros may use customized or different models” disclaimer). Tennis Warehouse’s Mmoh gear page points at the 2025 SX 300. Forbes’ 2025 SX launch coverage also names Mmoh among SX-series endorsers (alongside other Dunlop athletes who may run Tour or custom sticks—don’t assume every name swings this retail 300).

Retail ≠ tour setup. Pros customize weight, balance, and strings. Why club players still care: the stock 300 g / 16×19 / 100 SX 300 is the Dunlop spin frame you can actually demo at $250 without pretending you’re swinging a private Tour mold.

Honest verdict

If Court List already covers Pure Aero and VCORE 100 for spin 100s—and Blade / Percept / TFight / Prestige / Pro Staff for control—SX 300 fills the empty Dunlop slot: a real spin-first 100 with TW-level topspin scores and a $50–$55 street discount to the yellow and ruby flags. Demo Aero or VCORE first if you want the category defaults; demo this when you want the same job cheaper, slightly more directed (per some TW notes), or just a teal frame that isn’t another midplus control twin. For serious recreational players, it’s solid coverage in the spin lane—a 3, not a forced 4—because Aero/VCORE remain the stronger “must demo first” answers, and this one earns its keep as the value-spin primary once those are on the list.

Updated 2026-10-07