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Stradia Sonic Strike 21 tennis racquet

Source: Decathlon Australia

Stradia

Sonic Strike 21 Stradia

Tennis· Sonic

Updated on 10/05/2026

The Stradia Sonic Strike 21 is a two-piece aluminum junior tennis racquet, 21 in long, with an 84 in² head and a 16x19 string pattern. It weighs about 190 g, has a 260 mm balance and a No. 2 grip, and the recommended tension is 40 to 45 lb. The low weight and balance point make the racquet agile and easy to maneuver for young players.

Key specs

Full specs
Head size
84 in²
String pattern
16x19
Length
21 in
Balance point
260 mm
Material
Two-piece aluminum
Recommended tension
40-45 lb

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Strengths and watch-outs

Pros

  • Light (about 190 g): easy to maneuver
  • 260 mm balance: agile handling
  • Two-piece aluminum: durability

Cons

  • 84 in² head: small hitting area
  • 21 in size: only for small children

Specs

Dimensions
Weight unstrungNo dataMedium confidence
Weight strungNo dataMedium confidence
Head size84 in²Medium confidence
Length21 inMedium confidence
Balance point260 mmMedium confidence
SwingweightNo dataMedium confidence
Construction
Stiffness (RA)No dataMedium confidence
String pattern16x19Medium confidence
Frame thicknessNo dataMedium confidence
MaterialTwo-piece aluminumMedium confidence
Recommended tension40-45 lbMedium confidence
Grip sizesL2Medium confidence

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