Playing Length
Controls where the ball meets the face. A heel strike costs more ball speed than any shaft change will ever recover.
Stock drivers have crept toward forty-six inches because that length maximises club speed in a robot test. Human beings are not robots, and the extra half inch usually costs more in strike quality than it returns in speed.
So we start there. Your current driver goes on the ruler, then we hand you progressively shorter test builds with fresh tape on each and watch where the mark lands. When the pattern tightens, we stop. Only then do mass and head design come into it.
The result is often a driver a full inch shorter than the one you brought, occasionally with the same head, and a card explaining precisely why.
Half the fee comes off build labour if you order within ninety days.
This ranking is drawn from our own re-gauge archive rather than a manufacturer's marketing deck, and it holds up across almost every skill level we see.
Controls where the ball meets the face. A heel strike costs more ball speed than any shaft change will ever recover.
Decides whether you can deliver the head on time. Too light and the club arrives early; too heavy and the swing shortens by the fourteenth hole.
Set after the first two, because both change what loft you actually deliver. Adjustable hosels make this the quickest variable to settle.
Last, and often the least important. Once length and mass are right, most modern heads perform within a few yards of one another.
Three patterns account for most first-session drivers. None of them require a new head to fix, which is why we gauge before we sell.
If none of the three apply, you may genuinely already have the right driver, and we will tell you so and charge the session fee anyway.
Seventy-five minutes, a card at the end, and a decent chance you keep the head you already own.