Yonex Astrox 77 Tour
Yonex

Yonex Astrox 77 Tour

Specs

Flexmedium
BalanceHead Heavy
Weight / Grip
3U / G4,G5,G6
4U / G5,G6
Max Tension
3U: 29 lbs
4U: 28 lbs

Yonex Astrox 77 Tour - Performance & Technical Overview

The Yonex Astrox 77 Tour is designed for aggressive players seeking strong rear-court crashing smashes paired with solid control. According to Yonex's official spec page, it features a medium flex shaft.

It comes in two variants: 4U (G5, G6) and 3U (G4, G5, G6). The official stringing advice is up to 20-28 lbs for 4U and 21-29 lbs for 3U.

While Yonex does not explicitly label the balance category in the spec sheet, retail listings frequently describe this model as having a head-heavy balance, making it well suited for steeper attacks and aggressive play.

Key tech includes: HM Graphite frame, Light Feel Carbon NEO, Nanomesh NEO shaft, Built-In T-Joint, and 10 mm longer length (for improved shuttle hold and leverage).

Racket Specification Breakdown

Flex: Medium

A medium-flex shaft provides a comfortable balance between power and control, suitable for a wide range of intermediate players.

Flex Rating

Flexible
Medium
Stiff

Balance: Head Heavy

A head-heavy balance adds more momentum to your swings, giving stronger smashes and deeper clears. Best for attacking players.

Balance Rating

Head Light
Even
Head Heavy

Available Variants

3U Variant

Grip Sizes: G4,G5,G6

Max Tension: 29 lbs

3U (85-89g) gives more weight and stability, allowing stronger smashes and better control for powerful players.

This tension range is ideal for intermediate to advanced players seeking crisp control and strong repulsion.

4U Variant

Grip Sizes: G5,G6

Max Tension: 28 lbs

4U (80-84g) offers faster handling and great maneuverability, ideal for doubles or quick all-round play.

This tension range is ideal for intermediate to advanced players seeking crisp control and strong repulsion.

Best For

  • Intermediate all-round players looking for a balance of power and control.
  • Attacking players who rely on smashes and deep backcourt clears.
  • Players seeking strong smash power and stability for singles play (3U).
  • Players needing faster handling and quick transitions in doubles (4U).
  • Intermediate to advanced players who appreciate a frame capable of tighter tensions, but it still performs well at lower, more forgiving tension setups.