KHT is the proprietary internal construction invented at Dumina in 2013. We've never patented it — because once the secret is out, the category changes forever. But we can tell you what it does, and why no other shaft feels or performs quite like it.
To make a shaft lighter, manufacturers historically had to sacrifice something — wall thickness, stability, or kick behavior. The result is that below ~60 grams, most "lightweight" shafts turn inconsistent, whippy, or wild under stress.
Dumina's engineering team believed there was a way to uncouple mass from stability — if you could engineer the internal geometry of the shaft with a completely different logic.
Instead of layering carbon uniformly, KHT places mass only at the structural points that influence kick and dispersion. The rest of the shaft sheds weight — up to 30g less than a comparable conventional design.
Conventional shafts load on force. KHT loads on tempo. That means a smooth 90-mph swing accesses the same dynamic loft profile that an aggressive 110-mph swing does — with no extra effort from the player.
At impact, the KHT core returns the clubhead to square with remarkable consistency. Dispersion tightens, center-face contact increases, and the distance curve gets dramatically more repeatable.
Average carry gain vs. prior shaft, across 500+ fittings
Additional dynamic loft without changing clubhead
RPM less backspin on driver
Weight reduction vs. a stability-matched conventional shaft
The flagship. KHT is applied across the entire shaft length — maximum weight savings, maximum feel, maximum effortless release.
View Autoflex → AutopowerThe bridge. KHT is applied only where it changes feel most — retaining the substantial sensation of a traditional profile with measurable Dumina performance.
View Autopower →