Kumpoo JS-65 string review: the 0.65 mm durability line, honestly
I joined Kumpoo's J-series trial by chance — here is an honest take on Kumpoo JS-65, their 0.65 mm high-rep durable line.
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Overview
I joined Kumpoo's J-series trial by chance — here is an honest take on Kumpoo JS-65, their 0.65 mm high-rep durable line. JS-65 targets elasticity plus longevity: medium-fine 0.65 mm gauge with dense fibre construction. Feel runs firm with clear feedback. Flat drives and net shots feel lively even though the tone skews muted. Control is what won me over versus my usual Yonex EXBOLT 63. At 26/28 lb JS-65 is at least as firm as fresh EXBOLT 63 — excellent placement on net play and drops. Rebound trails EXBOLT 63; first session felt odd, two games later I adjusted. Price lands around 25–30 yuan — strong value for budget players who want durability without going mushy. Five years playing, roughly CN forum level 4 — take this as one player's view, not gospel. Pink JS-65 on the racket also looks good strung — petty bonus, but it matters on court mood. Who fits: players who want hold and control first, can accept slightly lower spring than premium thin strings, and need a cheap training or club-match line.
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