

| Flex | stiff |
| Balance | Head Light |
| Weight / Grip | 4U / G4,G5 |
| Max Tension | 4U: 28 lbs |
The Yonex Nanoflare 555 is engineered for players prioritising ultra-fast racquet handling and quick shuttle acceleration. According to the official Yonex spec page, it uses a stiff flex shaft.
It is offered in the 4U (G4,G5) variant (approx. 83 g average) with stringing advice up to 20-28 lbs.
Tech features include HM Graphite, Nanocell NEO, EX-HMG and Solid Titanium in the frame, a built-in T-Joint, and a 10 mm longer overall length for increased reach and shuttle hold.
Although the official spec does not explicitly label the balance as head-light, multiple sources list the balance point as head-light, making this racquet particularly suitable for fast swing and quick reaction play.
A stiff shaft offers maximum control and precision, ideal for players with fast swing speeds who can fully load the shaft.
A head-light design increases speed and maneuverability, perfect for fast defensive play and quick doubles rallies.
Grip Sizes: G4,G5
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.