Mizuno

Mizuno Caliber S-Boost

Not sold by the UK shops we check about £73 abroad

Suits aBack-Court HammerSteep, heavy smashes from the back, with head weight and a firm shaft behind every hit.

Balance ≈303mm Head heavy

Flex Medium 50 on our 0-100 scale

Weight 82g · 4U Before strings and grip

Best featureSpeedy medium flexPlayer styleSpeed / Control Model seriesMizuno Caliber

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This racketEvery other racket

BalanceHead heavy

FlexMedium

Weight4U 82 g

A 4U medium-flex Caliber racket with a thin V-Frame and Side Balance Grommets for steadier weight distribution. Intermediate players get quick handling and a stable feel.

Quick, stable frame
Medium flex
Aerogroove Mid holds strings

Balance claims conflict between sources
Spec comes from one shop

Where to buy

None of the UK shops we check sell it right now, so it may only be available abroad. Researched price: about £73.

Weights	4U 80-84g
Balance	Head Heavy
Shaft	Medium
Max tension	30 lbs
Grips	G5
Released	-
RRP	-

Balance estimated from the brand label; flex placed from the brand label. Brands rate stiffness differently, so treat flex as approximate.

Spec sources: 1 · 2

Mizuno Caliber S-Boost

Where to buy

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