Callaway GBB Epic Driver

Loft Options & Stock Shafts

Technology

Players Distance Driver

The GBB Epic was Callaway's headline driver for 2017, and the whole story is what's going on behind the face. Two small titanium bars run from the crown to the sole, right behind the hitting area. Callaway calls it Jailbreak. The idea is that those bars stiffen the head so the face itself does more of the work at impact, and the payoff is ball speed, especially on shots you catch a little high or low on the face.

This is a high-launch driver, and it plays like one. Tee it up, swing, and the ball wants to climb. If you fight a low, boring flight or you've been losing carry distance as your swing speed has dropped, that launch profile does you a favor. If you already hit it high and spinny, this is not the Epic you want. Callaway made the Sub Zero for that golfer.

Seven-plus years on, nobody's paying retail for one of these. It lives on the used rack now, and that's exactly where it makes sense. The Jailbreak tech that felt like a big deal in 2017 is still in Callaway drivers today, so a clean GBB Epic gives you most of that ball-speed story for a fraction of what a new driver costs.

• You need help getting the ball up and holding carry distance, whether that's from a slower swing or a low ball flight you can't shake.
• You want forgiveness on off-center hits and don't mind a driver that's easy to launch rather than one you have to work.
• You're shopping the used market and want real ball-speed tech without spending new-driver money.

Frequently Asked Questions

What is Jailbreak Technology in the GBB Epic?

Jailbreak is two titanium bars inside the head that connect the crown to the sole, sitting just behind the face. They stop the body of the driver from flexing as much at impact, so the face absorbs and returns more energy. The result is faster ball speed, and it holds up better than usual on shots you don't hit dead center.

What's the difference between the GBB Epic and the Epic Sub Zero?

Both use Jailbreak and the carbon crown, so the ball-speed story is the same. The standard GBB Epic launches higher and spins more, which suits most amateurs and slower swingers. The Sub Zero drops the spin and launch for faster, stronger players who were losing distance to a ball that flew too high. If you spin the ball a lot, go Sub Zero. If you need help getting it up, the standard Epic is the one.

Is the GBB Epic still worth playing in 2026?

Yes, if you buy it used and set your expectations right. The core tech still shows up in current Callaway drivers, so you're not giving up much in raw ball speed. What you give up is a few years of refinement in forgiveness and adjustability. For the price of a decent lunch out compared to a $600 new driver, it's a smart buy for a mid-to-high handicapper.

Does the GBB Epic sound different from other drivers?

It does. The carbon crown gives it a lower, more muted impact sound instead of the sharp metallic crack a lot of players expect. Some golfers immediately prefer it. Others feel like they're not catching it flush at first because it's quieter. Give it a range session before you judge it.

Who should not buy the GBB Epic?

Anyone who already hits the ball high with plenty of spin. This driver adds launch, so it can balloon your flight and cost you distance if that's your natural shot. Fast swingers in that camp are better off with the Sub Zero or a modern low-spin head.