Badminton · Rackets

Yonex ASTROX 77 PRO

An unstrung Yonex badminton racquet listed with medium flex, 10 mm-longer length, 4U and 3U weight/grip options, and model-specific stringing advice.

Last checked Aug 31, 2026 · Published configuration

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What this record covers

Product
An unstrung Yonex badminton racquet listed with medium flex, 10 mm-longer length, 4U and 3U weight/grip options, and model-specific stringing advice.
Published configuration
The configuration named by the manufacturer source.
Source basis
This record uses the linked manufacturer source for published specifications. Editorial context explains those published details; it is not hands-on or laboratory testing.

Published specifications

Note
Unstrung racquet
Shaft flex
Medium
Frame
HM Graphite, Flex Fuse, Tungsten
Shaft
HM Graphite, Namd™, Ultra PE Fiber
Joint
NEW Built-in T-Joint
Length
10 mm longer
Weight and grip
4U (Avg. 83 g) G5, 6; 3U (Avg. 88 g) G4, 5, 6
Stringing advice
4U: 19–27 lbs; 3U: 20–28 lbs
Recommended string
Control Players: AEROBITE; Hard Hitters: EXBOLT65
Colours
High orange
Made in
Japan
Item code
AX77-P

Overview

Yonex identifies this model as the ASTROX 77 PRO and lists it as an unstrung badminton racquet. The international product page publishes medium flex, a 10 mm longer length, 4U and 3U weight/grip options, and separate stringing-advice ranges for those options.

Construction and context

Yonex lists HM Graphite, Flex Fuse and Tungsten for the frame; HM Graphite, Namd™ and Ultra PE Fiber for the shaft; and a NEW Built-in T-Joint. These are manufacturer-published material and construction descriptors for the listed model, not independently measured evidence of a particular on-court outcome.

Who it may suit

This entry may help a shopper verify the exact model and compare Yonex’s published flex, length, weight/grip options and stringing advice with another catalogued badminton racquet. Those fields do not establish personal fit, feel, or results for an individual player.

Specifications in context

4U (Avg. 83 g) and 3U (Avg. 88 g)
Yonex publishes separate average-weight and grip configurations; compare the specific option rather than treating the entry as one identical frame specification.
Medium flex
This is Yonex’s published flex label for the listed model, useful for catalog comparison but not a promise about feel or playing results.
Stringing advice
The 4U and 3U tension ranges are manufacturer guidance for the listed configurations, not a universal setup recommendation for every string or player.

Tradeoffs and caveats

  • Yonex lists both 4U and 3U configurations, so the exact option should be confirmed before comparing a retail listing.
  • The stated average-weight notations are not exact measurements of every individual racquet.
  • String choice, tension, installation and added grips can change a finished racquet beyond the listed unstrung-frame fields.

Frequently asked questions

Is this entry a hands-on review?

No. This is a source-verified catalog record based on Yonex’s published product information and does not claim court or laboratory testing.

Does every ASTROX 77 PRO weigh exactly 83 or 88 g?

No. Yonex labels those figures as averages for its 4U and 3U options, so an individual racquet may not match either value exactly.

Where can current specifications be checked?

Use the linked Yonex product pages, which are the primary sources for this record and may vary by market or change with a product revision.