Fitting guides, swing speed education, technology deep-dives, and honest advice from the engineers and fitters behind AutoFlex and AutoPower.

Ava Chen (Brooklyn, NY) and Lucy Cui (Honolulu, HI) won their divisions at Augusta National's 2026 Drive, Chip and Putt National Finals — both playing AutoFlex shafts.
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Why lighter and more flexible isn't a compromise — it's the science. A complete guide for golfers under 95 mph looking to pick up real distance.
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Most shafts use flex labels. AutoFlex uses frequency. Here's why CPM is the most accurate way to match a shaft to your swing.
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Launch monitor data from real fittings. What changes in ball speed, spin, and dispersion when you switch to KHT.
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Counterintuitive but proven. The relationship between shaft weight, swing speed, and energy transfer at impact.
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A side-by-side breakdown of every SF Series model. Swing speed ranges, feel profiles, and who each shaft is built for.
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A rare look inside Dumina's South Korean facility — how proprietary high-modulus prepreg is rolled, cured, and frequency-matched to ±2 CPM.
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