
Yonex Astrox 100 ZZ 4U
4UHead HeavyExtra Stiff2020
Yonex Astrox 100 ZZ (Head Heavy, Extra Stiff, 4U) is a racket for advanced players with good technique and swing speed. Its demanding characteristics — a stiff shaft that punishes mistimed shots, a head-heavy balance that needs strong wrist control — require strong fundamentals to use effectively. Best suited for aggressive singles play and rear-court attacking in doubles. A professional-grade racket for tournament play.
Official Specifications
| Specification | Value |
|---|---|
| Weight Class | 4U |
| Balance Point | 305 mm |
| Balance Type | Head Heavy |
| Flex | Extra Stiff |
| Max Tension | 29 lbs (13 kg) |
| Frame Material | High Elastic Carbon, New Dimension Carbon, Black Micro-Core, Tungsten, Dense Nano Carbon |
| Shaft Material | High Elastic Carbon, New Dimension Carbon |
| Year Released | 2020 |
| Series | Astrox |
| Price Range | Pro ($200+) |
Similar Rackets
| Racket | Match | Weight Class | Balance Point | Balance Type | Flex | |
|---|---|---|---|---|---|---|
![]() | 85% | 4U | 305 mm | Head Heavy | Stiff | |
![]() | 85% | 3U | 305 mm | Head Heavy | Extra Stiff | |
![]() | 82% | 4U | 300 mm | Head Heavy | Medium Flex | |
![]() | 80% | 4U | 315 mm | Head Heavy | Stiff | |
![]() | 80% | 3U | 315 mm | Head Heavy | Extra Stiff | |
![]() | 80% | 4U | 315 mm | Head Heavy | Stiff |





