Duora 77
Model DUO-77
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Duora 77: the medium-flex export Duora that Yonex Japan never listed
A Duora that arrived without a launch
The Duora series began as one racquet, the Duora 10 of September 2015, and Yonex USA’s Duora page still showed only the 10 in late January 2016. A month later it listed four: the Duora 10, 7, 88 and 77. Yonex’s news release of March 17, 2016 called the Duora 7 “the newest addition to the DUORA series” and named neither the 77 nor the 88, and no Yonex release announced either. The 77 was an export model. Yonex Japan never listed it: its Duora lineups ran Z-Strike, 10, 7 and 6 in 2017 and added the 8 XP and 10 LT in 2018. The 77 appeared instead on Yonex’s US, UK, Thai and Chinese sites and in its international catalogs, a Taiwan-made, medium-flex Duora that stayed on sale for more than four years. In the same weeks Yonex USA listed a Duora 77 LCW in Frosty Blue in Lee Chong Wei’s Exclusive line, which has its own page.
An all-round Duora at medium flex
Yonex called the 77 an all-round model whose Dual Optimum System boosts power on the forehand and distance on the backhand; its 2016 UK catalog set it beside the Duora 88, the “offensive model.” Like every Duora it has two head profiles, a box shape on the forehand face and an aero shape on the backhand, and Yonex lists the Aero+Box frame, an Isometric head, Nanometric β, a new grommet pattern, a built-in T-joint and the Control Support Cap. Its materials are simpler than the Duora 10’s: the frame is HM Graphite with Nanometric β and the shaft plain HM Graphite, where the 10 has Nanometric DR and nickel-titanium fiber, and Yonex rated the 77 medium against the 10’s stiff. It came only in 3U (average 88 g), 10 mm longer than standard, and Yonex recommended 19–26 lb. The shaft is printed “EVEN BALANCE / LONG SIZE” and “Developed by YONEX Japan / made in Taiwan,” and Yonex’s Thai and Chinese product pages also give Taiwan as the place of manufacture. Its US launch price was $115, below that of the stiffer, Taiwan-made Duora 88.
No player on the 77
Yonex named no player for the 77, and no Yonex equipment report names a player with it. The one professional on its product pages is Lee Chong Wei, in a series quote that Yonex’s US and UK sites ran on every Duora page: “I feel like my arm is one with the racquet on both my forehand and backhand, so I can push faster at the net.” That is copy for the Duora range, not a claim about the 77. Yonex’s reports put Lee on the Duora 10 and its LCW edition, whose pages tell that story, and the Frosty Blue 77 LCW carries his name as a livery, not as a racquet he is documented using.
One code, several finishes
Yonex sold the 77 under one item code, DUO77, in a run of finishes. The launch frame was Black/Red, a gunmetal-gray frame with red and black trim in Yonex’s photograph. Black/Red is the color in Yonex UK’s 2016 catalog, in Yonex Poland’s and Yonex’s international 2017 catalogs, on Yonex Thailand’s 2017 page and on Yonex China’s page, where the item is DUO77EX. Between March and April 2018 Yonex USA switched its listing to Red/White under the same code, with new photographs, and Yonex’s 2018 catalog lists Red/White as well. By December 2019 Yonex China listed a “DUORA 77 (new colour)” in red, item 19DUO77EX, among new colors that also covered the 55, 88 and 6; the black 55, 19DUO55EX, was already on Yonex China’s site in May 2019 and is described on the Duora 55’s page. Yonex’s global site in September 2020 named the color Yellow/Black but pictured a red frame with yellow and navy trim. Yonex announced none of these changes, and whether the Red/White, the Chinese red and the Yellow/Black are one finish or several is undocumented. The Frosty Blue 77 LCW is a separate item, DUO77LCW.
Four years on export lists
The 77 stayed on sale for more than four years. Yonex USA’s page ran from early 2016 into May 2020, Yonex UK listed it in 2017 and 2018, and Yonex’s global page showed it in stock in August and September 2020. By September 2021 the global Duora list had dropped it, along with the 6, 8 XP and 9, and Yonex USA’s 2021 catalog had no 77. Yonex China’s product page was still online in a June 2021 capture, which shows that the page survived, not that the racquet was still being made or sold. Yonex published no production-end notice, so 2020 is the last year it is documented on sale new. No verified sales are recorded yet. Its interest for collectors lies in the Duora family’s export branch and its Lee Chong Wei Exclusive twin rather than in a player or edition of its own.
Look-alikes in the family
No counterfeit of the Duora 77 is documented, and Yonex published no guide specific to it. Mix-ups within the family are the likelier problem, since every Duora shares the two-profile head and the long frame. The Duora 88 is the closest match: it shares the 77’s Taiwan origin, its 3U weight and its shaft wording but is rated stiff, so the model name on the shaft decides. The Japan-made Duoras, such as the 7 and 10, were sold in 3U and 2U. The 77 LCW is the same frame in Lee Chong Wei’s Exclusive colors, and a later red 77 is a plain DUO77, not an edition.
The export branch of the Duora family
Beside its Japan-market Duoras, Yonex ran an export branch: the 88 and 77 from early 2016, a Duora 55 for intermediate players (on Yonex China’s site by December 2016), and a Hi-Flex Duora 33 from 2018; the 55 and 33 have their own pages. By September 2021 Yonex’s global Duora list held the Z-Strike, 10, 10 LT, 7, 99, 33 and Light, and none of them was named as the 77’s successor. In a Duora collection the 77 is the medium-flex export model and the base of the Frosty Blue LCW edition; the Duora 10 page tells how the series wound down.
Yonex’s item code is DUO77; Yonex China used DUO77EX, and 19DUO77EX for its 2019 red. Yonex listed only 3U (average 88 g; 85–89.9 g on its UK and Thai pages) with G3–G5 grips, so a 4U or 2U Duora 77 matches no Yonex listing. On the Black/Red frame the shaft reads “EVEN BALANCE / LONG SIZE” and “Developed by YONEX Japan / made in Taiwan,” and the frame is 10 mm longer than standard. A Japan marking points to a Japan-market Duora such as the 7 or 10, and a stiff rating to the Duora 88. Run a finger around the head: one face should have a squared box profile and the other a slimmer aero profile. Yonex (Shanghai)’s certificate for China-market frames says the production date is recorded on the cone. Yonex’s own counterfeit test is the hologram sticker, which resists lifting on a genuine racquet.
The Duora 77 was a lower-priced export model, launched in the US below both the Duora 88 and the Duora 10 and on sale for more than four years, so buy on condition. Match the finish to Yonex’s documented colors (Black/Red, Red/White, the 2019 Chinese red, Yellow/Black) and treat none of them as an edition. Check the 3U label and the Taiwan print, ask for daylight photographs of both head profiles, the T-joint and the cone, and look for cracks and repainting.