Nanoflare 370 Speed
Model NF-370
Price history
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Nanoflare 370 Speed: the stiff, smash-speed model of Yonex’s 2019 Nanoflare launch
The smash-speed Nanoflare
Yonex announced the Nanoflare 370 Speed on January 15, 2019, as one of four models launched alongside the Nanoflare 700 in a new head-light series. Yonex’s release divided the family by player. The 370 Speed was “designed for advanced players who desire improved smash speeds,” the 270 Speed was for intermediate to advanced players seeking greater clears, and the 170 Light was for beginners. From 2020 Yonex’s product page described the 370 Speed a little more broadly, “for intermediate to advanced players looking for improved smash speeds,” and kept that wording until 2024. Either way, it was the family’s model for players who wanted a faster smash, and the only one of the five launch racquets that Yonex rated stiff.
EX-HMG in place of Super HMG
The 700 introduced Yonex’s Sonic Flare System, with Super HMG graphite at the top of the frame and Toray’s M40X along the bottom. The 370 Speed used a different high-modulus material from both of its neighbors. Yonex lists its frame as high-modulus graphite with Nanocell NEO and EX-HMG, where the 270 Speed has Super HMG and the 700 has M40X with Super HMG. The shaft is high-modulus graphite, with a built-in T-joint as on the 270. Yonex’s product pages still list the Sonic Flare System among its technologies, with the Aero Frame, an Isometric head, a super-slim shaft, the New Grommet Pattern and the Control Support Cap. Yonex rates the flex stiff, where it rated the 700 and the 270 Speed medium and the 170 Light flexible, and Yonex Taiwan calls the balance head-light. It came in 5U (average 78 g) and 4U (average 83 g), and Yonex lists the frame as 10 mm longer than standard. Yonex recommends 19–26 lb in 5U and 20–27 lb in 4U.
Players
No professional player is documented using the Nanoflare 370 Speed.
Yellow, then blue
The 370 Speed launched in Yellow, the only color in Yonex’s 2019 release and on Yonex’s product pages through August 2020. By February 2023 Yonex’s global page showed Blue, which stayed the listed color until the page’s last capture in April 2024. No Yonex announcement of the change has been found, and the listed specification otherwise stayed the same. No special or player edition is documented. The launch colors also separate the 2019 models: the 270 Speed launched in red, the 700 in blue green and red, and the 170 Light in lime and magenta. Unlike the 700 and the 270 Speed, the 370 Speed had no page in Yonex USA’s 2019 catalog, which names it only by its item code in the stringing guide.
Five years in the store
Yonex’s global product page listed the 370 Speed “In stock” in 2020 and throughout 2023, last on April 23, 2024, and the page now returns “not found,” as the 270 Speed’s and 170 Light’s pages do. Yonex published no discontinuation notice, so 2024 is the last year it is documented on sale new rather than a production end. No Yonex launch price is documented for it either. No verified sales of the 370 Speed are recorded yet.
Copies and mix-ups
No counterfeit specific to the 370 Speed has been documented. Yonex’s current guidance gives one general test, the hologram sticker, which is hard to peel off a genuine frame. The likelier error is identity. The four 2019 adult models share the family look, so the model name on the shaft and the item code matter more than the photograph. Yonex prints no country of manufacture for the 370 Speed, so a Made in Japan marking points to a Nanoflare 700. Some retail listings give Taiwan as its origin, but no Yonex source confirms it.
The stiff end of the first family
The 370 Speed was the stiff, smash-oriented model of the first Nanoflare family, the head-light series Yonex launched around the 700 in 2019, and like the 700, 270 Speed and 170 Light it stayed on Yonex’s global store into 2024. The family’s numbered names gave way to tiers: by January 2025 Yonex’s global Nanoflare list sorted the 700 and the 800 into Pro, Tour, Game and Play versions. The 370’s interest for a collector is its place in that first lineup and its two colors, which date a frame to its sales period. The Nanoflare 700 page tells the series’ launch story.
Yonex’s item code is NF-370SP. Yonex rates the flex stiff and lists 5U (average 78 g) and 4U (average 83 g), with G4 or G5 grips on its product pages, and lists the frame as 10 mm longer than standard. The frame is high-modulus graphite with Nanocell NEO and EX-HMG, and the shaft high-modulus graphite. Documented colors are Yellow (2019–2020) and Blue (2023–2024). Yonex prints no country of manufacture for it, so a Made in Japan marking points to a Nanoflare 700, and a medium flex rating to the 700 or the 270 Speed. Yonex’s own test is the hologram sticker, which resists peeling on a genuine frame.
The Nanoflare 370 Speed is a common racquet from Yonex’s first Nanoflare family, documented on sale new from 2019 to 2024, with no documented professional user or special edition. Its interest is its place as the family’s stiff, smash-speed model and its two colors. Buy on condition: ask for photographs of the model name, the item code and the weight label, check the head and the frame-shaft joint for cracks or repainting, and confirm the color is Yellow or Blue.