autoFlex · AUTOPOWER · Hidden Korean Technology • Unlock Extraordinary PerformanceautoFlex · AUTOPOWER · Hidden Korean Technology • Unlock Extraordinary PerformanceautoFlex · AUTOPOWER · Hidden Korean Technology • Unlock Extraordinary PerformanceautoFlex · AUTOPOWER · Hidden Korean Technology • Unlock Extraordinary PerformanceautoFlex · AUTOPOWER · Hidden Korean Technology • Unlock Extraordinary PerformanceautoFlex · AUTOPOWER · Hidden Korean Technology • Unlock Extraordinary PerformanceautoFlex · AUTOPOWER · Hidden Korean Technology • Unlock Extraordinary PerformanceautoFlex · AUTOPOWER · Hidden Korean Technology • Unlock Extraordinary Performance

Korea Hidden Technology · by DUMINA

The secret behind every swing.

The proprietary design inside every DUMINA shaft, and the innovation behind autoFlex and AUTOPOWER.

Designed by DUMINA · Made in Korea

The most common question is the one we don't answer.

We make one of the most copied shafts in the world, so protecting it became part of the job. Materials, layup, process: how it's made is not public. The name says it: Korea Hidden Technology.

The results, however, are fully public. Every launch monitor prints them.

What we can tell you

  • 01

    Lightweight

    20–30g lighter than a conventional shaft, and that much strain off your body.

  • 02

    Force transfer

    Whatever your swing speed, the shaft optimises how your power reaches the ball.

  • 03

    Precision

    It settles the swing into a stable shape, and accuracy follows from that.

  • 04

    Distance

    Power transfer and flexibility working together: farther, and more precisely.

One technology, two feels.

Checked by hand.

The final check is done by hand, not machine. Every shaft is individually inspected before it ships.

Only in the genuine shaft.

Korea Hidden Technology cannot be made outside the DUMINA factory. A copy can match the look, never the inside. Every genuine shaft carries a 12-character engraved code, so check it before you buy used or from abroad.

Verify your shaft
Inside the lineup

Generations of KHT.

KHT is at the heart of every autoFlex shaft, designed to be easy to swing and to add kick at impact. Fitting the shaft to your swing gets the best results.

Dream 7 and Joy 365 carry the same concept as the Original, upgraded with the latest carbon prepreg from Japan and the second generation of KHT.

Shaft FAQs
2nd gen
KHT in Dream 7 and Joy 365
Japan
Carbon prepreg in Dream 7 and Joy 365
41–57 g
Original driver shaft weights
70–120
MPH club speeds covered by Original flexes
  1. 01 · autoFlex Original The shaft that changed the game

    Lightweight construction and Korean Hidden Technology maximize power transfer for more ball speed and longer carry and roll.

    Explore the Original →
  2. 02 · Dream 7 & Joy 365 Generation 2

    Japanese carbon prepreg and second-generation KHT. Dream 7 adds a new tip section for impact; Joy 365 adds a softer feel and extra kick for slower swings.

    Explore Dream 7 →
  3. 03 · AUTOPOWER KHT Tour-level stability

    T1100 carbon fiber minimizes shaft distortion and optimizes power transfer at impact, for advanced players seeking precision.

    Explore AUTOPOWER KHT →
Three swings on the range

Feel it
for yourself.

Some things are proven on the course, not on a page. Book a personalized shaft fitting at DUMINA HQ.

Book a fitting
Black autoFlex SF405 driver shaft

Book a fitting

Loading live availability…