Yonex Astrox Lite 37I Badminton Racket | Head-Heavy, 5U, Prestrung

Yonex Astrox Lite 37I Badminton Racket — Power-Packed, Doubles-Ready, Ships Prestrung

The Yonex Astrox Lite 37I is built for doubles players and all-around competitors who want a lightweight, head-heavy racket that delivers steep attack angles without sacrificing control. At just 78g (5U), it's one of the most maneuverable rackets in the Astrox iSeries lineup — yet its head-heavy balance point (295mm ±3) generates serious smash power the moment you commit to a shot.

This racket ships fully prestrung at 20–28 lbs, so you can unbox it and play immediately. Whether you're playing recreational club doubles or leveling up your intermediate game, the 37I gives you a performance-first feel at an accessible price point.

Why Players Choose the Astrox Lite 37I

Yonex's proprietary Nanomesh Neo technology is built into the shaft, enabling a faster flex-and-return cycle with every swing. When the racket face meets the shuttle, the shaft compresses and rebounds more rapidly than standard graphite — putting you back in ready position faster between rallies. Combined with the Aero-box Frame, which sheds air resistance by as much as 15% during the swing arc, the result is measurably greater head speed and cleaner energy transfer to the shuttle.

The Isometric head shape expands the sweet spot in all four directions compared to a traditional oval frame, meaning off-center hits still travel with surprising accuracy — critical in fast doubles exchanges. The New Built-in T-Joint and Control Support Cap improve torsional stability so the frame tracks true on flat drives and cross-court drops alike.

Full Technical Specifications

Who Is This Racket For?

The Astrox Lite 37I is ideal for intermediate to advanced doubles players who want a head-heavy racket that won't fatigue their wrist across long sessions. It performs particularly well for players transitioning from beginner all-graphite rackets to a purpose-built attack frame. If you're primarily a singles baseline player who prefers even-balance or head-light rackets, explore our Yonex Nanoflare Collection for a speed-first alternative.

Shop More From Yonex at TopCricketStore

Looking for strings, grips, or a racket bag to go with your new Astrox? Browse our full Badminton Accessories collection, or compare the full Yonex Astrox Series lineup to find the exact model for your playing style. All orders over $100 ship free across the US, and we carry rackets for every level — from juniors picking up their first frame to club competitors dialing in their setup.

Every Yonex Astrox Lite 37I includes a protective racket cover. In-stock and ready to ship from our Edison, NJ warehouse.

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FAQ Section 

Q1: Is the Yonex Astrox Lite 37I good for beginners? The Astrox Lite 37I is best suited for intermediate players who have developed consistent swing mechanics. Its head-heavy balance and flexible shaft reward players with a full swing stroke. Complete beginners may find an even-balance or head-light racket more forgiving initially, but the 37I is excellent for anyone ready to step up their doubles game.

Q2: What does "prestrung" mean, and what tension does the 37I come strung at? Prestrung means the racket arrives from the factory with strings already installed, ready to play out of the box. The Yonex Astrox Lite 37I ships strung at 20–28 lbs. This mid-range tension suits most recreational and club players. For competitive players who prefer higher tension (24–28 lbs) for sharper control, you can have the racket restrung by a local stringer.

Q3: What is the weight of the Yonex Astrox Lite 37I? The Yonex Astrox Lite 37I weighs 78g ±2, classified as 5U. In the Yonex weight grading system, 5U (75–79.9g) is considered ultra-lightweight, making this one of the lighter head-heavy rackets in the Astrox lineup. This combination of light weight and head-heavy balance gives you fast swing speed with extra smash power at contact.

Q4: Is the Astrox Lite 37I suitable for doubles or singles play? The Astrox Lite 37I is specifically designed with doubles play in mind. Its head-heavy balance (295mm) generates the steep attack trajectory that flat-doubles smashes require, while its 5U weight keeps your arm fresh through extended rallies. Singles players who prefer quick recovery after attacking shots may prefer a more even-balance or head-light racket.

Q5: What is Nanomesh Neo technology in Yonex rackets? Nanomesh Neo is a Yonex-proprietary composite material woven into the racket shaft. It creates a denser, more elastic mesh structure than standard graphite alone. When the shaft flexes during a swing, Nanomesh Neo helps it recover to its original shape faster — reducing the delay between your swing and the shuttle's departure, and improving your readiness for the next shot.

Q6: Does the Yonex Astrox Lite 37I come with a cover? Yes. Every Yonex Astrox Lite 37I sold at TopCricketStore includes a full-length Yonex badminton racket cover. The cover protects the frame during transport and storage.

Q7: What grip size does the Astrox Lite 37I come in, and can I change it? The racket ships with a G4 grip, which is the standard size for most adult players in the US and Europe (equivalent to approximately 3.5 inches in circumference). If you prefer a thinner grip for more wrist snap, you can remove the existing grip and apply a thinner replacement grip. Overgrips can also be wrapped over the G4 for a slightly larger feel.

Q8: How does the Astrox Lite 37I compare to other Yonex Astrox rackets? The Astrox Lite 37I sits at the entry-to-mid point of the Astrox iSeries, designed for players seeking the Astrox attack profile at a more accessible price. Higher-end Astrox models (like the 88D Pro or 99 Pro) use more advanced carbon layering and built-in rotational generator systems for elite-level smash power. The 37I delivers the core Astrox characteristics — head-heavy balance, Nanomesh Neo shaft, Isometric frame — at a price point suitable for club and recreational players.