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Yonex · String · April 2026
BG66 Ultimax
The go-to string for those chasing the ultimate in speed and repulsion. The BG66 Ultimax delivers a professional-grade shot experience for technical attacking players — but to fully exploit its advantages, you need a sufficiently consistent swing technique.
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String
Gauge
0.65mm
RRP
HKD $75–95
String Tension
20–30 lbs（建議 25–28 lbs）
Material
高強度尼龍複絲 High Intensity Nylon Multifilament
9.0/10
✓ Pros
- —Exceptional repulsion: industry-leading rebound speed gives a significant velocity boost to both smashes and flat drives
- —Precise placement from thin gauge: the 0.65mm ultra-thin design delivers more accurate shot placement — especially beneficial for technical players
- —Satisfying, clear feel: ample elasticity gives immediate shot-quality feedback after every swing
- —Adopted by top professionals: widely used by world-class players, validating its competitive credentials
✗ Cons
- —Poor durability: ultra-thin gauge breaks more easily under power hitting — amateur players tend to get shorter lifespan
- —Demands precise technique: excessive repulsion can cause inconsistent placement for players with less refined swing mechanics
- —Higher running cost: costs more than BG80 within the same series and needs replacing more frequently
Verdict
The go-to string for those chasing the ultimate in speed and repulsion. The BG66 Ultimax delivers a professional-grade shot experience for technical attacking players — but to fully exploit its advantages, you need a sufficiently consistent swing technique.