As long as there’s been custom fitting, golfers have wondered if the head or the shaft makes the difference in a driver fitting.

On this week’s episode of GOLF’s Fully Equipped, co-host Johnny Wunder asked Impact Golf’s Eric Chung, one of Maylasia best fitters, what he thinks makes the fit.

“I like to keep things relatively simple with everything I do. But I’ve always favored heads,” Chung said. “Heads to me has always been paramount to any fit, whether it’s locked, whether it’s certain weight positions, even shapes, looks, feels, sounds, et cetera, et cetera, right? Spin rates on different areas.

“I always use the shaft as a pairing instrument, this so that they can center the strike a little bit better. Whether it’s length, whether it kicks, whether it’s being profiles, et cetera. So, to keep it really simple, um, predominantly head-based, um, head bias first and then shaft pairing.

“And then all the small things, like, whether it’s a preference of swing weight, grip sizes to, uh, even total masses, which is probably more important for me. Yeah, but it’s still along those lines, and as long as I just feel that you can get it close enough. Like, you know, 85, 90% of where it needs to be. 
It’s more than good enough, if that make sense. It doesn’t have to be completely dialed in or over optimized.”

The startegy for Chung is simple: Identify the best head, then dial everything, including shaft, in from there. Chung says you basically can get 85 to 90 percent of the way there before even touching the shaft.

For more from Wunder and Chung, listen to the full episode of GOLF’s Fully Equipped here, or watch it below.

Want to overhaul your bag in 2026? Find a club-fitting location near you at True Spec Golf.

“>