Jackson Koivun is out there on tour right now, November 2026, and his bag holds a Titleist 620 MB Prototype iron. This isn’t just some off-the-rack club you grab at the pro shop, folks. This is a unique piece of metal he’s leaning on for his short irons, a clear signal he’s shifting big-time into custom gear. The man is dialing in his game with some serious specific tech, and it’s something every golf fan should be watching.
Driver and Woods: Custom Builds For Speed and Control
When Koivun steps up to the tee, he’s launching with a Titleist GTS2 driver, set to a tight 8 degrees. He’s got that paired with a Fujikura Speeder 661 TR X shaft, so you know he’s chasing maximum speed off the tee. But it doesn’t stop there. His 3-wood is also a special build: a Titleist GTS3 Prototype, dialed in at 15 degrees. That club has a prototype label right on its head, matching the driver in brand but taking it up a notch in custom tech. He’s swinging a Graphite Design Tour AD DI 8 X shaft with that bad boy. The man is clearly not messing around, building his bag piece by piece to gain every edge he can on tour.
The Iron Stack: Where the Real Magic Happens
Now, let’s get into the irons, because this is where the real gear heads perk up. Koivun starts his iron stack with a Titleist T250 in the 3-iron slot. Then, he moves to a Titleist T100 for his 4-iron. But from the 5-iron all the way through the 9-iron, he switches to that game-changing 620 MB Prototype. That’s a huge commitment to a non-standard club for a crucial part of his game. According to GolfWRX, the shafts in these irons are specific too: his 4-iron and everything down to the pitching wedge run Project X 6.5 shafts. This mix isn’t just for show; it’s all about controlling ball flight and making every shot count out there.
Wedges, Putter, and The Fine Details
Of course, Koivun’s bag details extend to his short game. He’s got Titleist Vokey Design SM11 wedges, carrying a 46-10F and a 50-08F. He even custom-bent his 54-08M wedge to 55 degrees, showing that attention to detail we love to see. A 60-04T finishes out his high-loft options around the green. The wedge shafts are just as precise: Project X Rifle 6.5 shafts for the 46 and 50-degree wedges, a Project X Rifle 6.0 for the 54-degree, and a Project X Red Steel Rifle 6.0 for the 60-degree. When it comes to putting, he’s trusting a Scotty Cameron Phantom 10 Proto, and every single club in his bag is gripped with SuperStroke Crossline 2.0 Full Cord grips. Oh, and he’s playing the Titleist Pro V1 ball, naturally. This isn’t just a setup, it’s a statement, all straight from the equipment reports by GolfWRX. Keep an eye on Koivun and this gear, because he’s building something special.
This article was created with AI assistance and published under Seattle On Tap’s editorial standards. See our Editorial Policy.
Originally reported by Yahoo Sports.
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