Duora 33
Model DUO-33
Price history
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Duora 33: the Hi-Flex export Duora that outlasted the 55, 77 and 88
The soft end of the export Duoras
Of the export Duoras, the 88, 77, 55 and 33, the 33 is the soft one: Yonex rated it Hi-Flex and sold it in 4U only, where the 88 is Stiff and the 77 and 55 Medium. It joined Yonex’s international Duora list in early 2018, absent on 28 January and listed on 30 March, and was still there, in stock, on 19 January 2023, after the 88 and 55 had left in 2020 and the 77 by September 2021. Yonex Japan’s racquet lists of 2018 and 2021 do not include it, and Yonex named no player for it.
Hi-Flex on the Duora platform
Yonex China’s page, online by March 2018 under item DUO33EX, describes the 33 in one line: 搭载双面异型框，轻量高弹，极易上手, a two-sided asymmetric frame that is light, lively and very easy to get used to. Yonex’s international page lists the same technologies as the Duora 55’s: the Dual Optimum System, Nanometric β, an Isometric head, a new grommet pattern, the Aero+Box frame (“combines solid hitting feel and quick swing”), a built-in T-joint and the Control Support Cap. The frame is H.M. Graphite with Nanometric β, the shaft graphite, and the racquet 10 mm longer than standard. Yonex offered only 4U (average 83 g) with G4 or G5 grips. The selector in Yonex’s 2018 catalog plots the 33’s box and aero faces at the same height, across the even-balance line.
No player on the 33
Yonex named no player for the Duora 33, and none is documented using it. Its international page carries the Duora series quote credited to Lee Chong Wei, “I feel like my arm is one with the racquet on both my forehand and backhand, so I can push faster at the net,” which is copy for the range, not a claim about the 33. Lee’s documented Duoras are the Duora 10 and its editions.
One color, two codes
Yonex documented one finish for the 33, Orange/Red: on its international page from 2018 to 2020, on Yonex UK’s page, in the 2018 catalog and on Yonex China’s pages (橙/红, color 439). The item code is DUO33; Yonex China added EX. No other color and no edition of the 33 is documented, unlike the Duora 55, which Yonex China sold in three colors under year-prefixed codes.
Nearly five years on Yonex’s lists
The 33 was an export model. It survived the 2020 rebuild of Yonex’s global site, which dropped the 55 and 88, and stayed on the new Duora list through 2021 and 2022. Yonex’s 2021 catalog still names DUO33 in its stringing instructions, in a group with the Z-Strike, 10, 10 LT, 7, 99 and Light. Yonex USA’s 2019 catalog names the 33 only in its stringing table, not among the Duoras it pictured. On 19 January 2023 Yonex’s global list showed it in stock beside six other Duoras; by late March 2023 only the Z-Strike remained. Yonex published no production-end notice, so 2023 is the last year it is documented on sale new. No verified sales are recorded yet.
Mix-ups, not documented fakes
No counterfeit of the Duora 33 is documented, and Yonex published no guide specific to it. Mix-ups within the family are the likelier problem, since every Duora has the long two-profile frame. The Duora 6 is also Hi-Flex and 4U, but it is Japan-made. The 55 shares the 33’s frame materials, technologies and Taiwan origin but is rated Medium and was also sold in 3U, and the 77 and 88 are 3U frames rated Medium and Stiff. The model name on the frame, with the flex and weight labels, settles which one it is.
The last of the export branch
The 33 was a late, soft addition to the Duora’s export branch, with no player, edition or Japanese release behind it. It gave that branch a Hi-Flex model beside the Stiff 88 and the Medium 77 and 55, and it was the last of the four to leave Yonex’s list. When it went in early 2023, so did every Duora but the Z-Strike; the Duora 10 page tells how the series wound down.
Yonex’s item code is DUO33 (DUO33EX in China). Yonex listed only 4U (average 83 g; 80–84.9 g on Yonex UK’s page) with G4 or G5 grips, Hi-Flex, and a frame 10 mm longer than standard; Yonex’s international page recommends 19–24 lb, Yonex China’s 19–26 lb. Orange/Red is the only finish Yonex documented. Yonex China gives Taiwan as the place of manufacture, so a Japan marking points to a Japan-made Duora such as the 6 or 7. Check that the head shows the two profiles Yonex calls Aero+Box.
The 33 was listed for nearly five years in one color, so buy on condition. Confirm the DUO33 code, the 4U label and the Orange/Red finish, and be wary of a 3U or differently colored “Duora 33”, which no Yonex page lists. Ask for daylight photographs of both head faces, the T-joint and the cone, and look for cracks and repainting.