A Clean Break from Tradition
Si Woo Kim has made a major shift in his bag for the 2026 season. According to GolfWRX, he now relies entirely on Callaway for his woods and wedges. This move stands in stark contrast to the mixed-brand setups many pros use these days. He’s trusting one family of heads to handle the heavy lifting on tour. The driver is the new Callaway Quantum Triple Diamond set at 8.5 degrees. It sits low and deep to help him control the ball flight. That specific loft choice shows he wants to keep the ball down in the wind.
His iron setup is a hybrid mix that demands high skill. He plays a Callaway X Forged 4-iron but switches to Callaway Apex MB blades from 5 through the wedge. This arrangement gives him workability on the long irons while keeping the feel he needs for scoring. Per GolfWRX, he uses KBS Tour V 125 shafts across these irons. That heavy shaft weight means he has to generate his own power. It’s a setup for a player who knows exactly how to strike the ball.
Most amateurs wouldn’t touch those shafts with a ten-foot pole.
He’s built for the shot, not the marketing brochure.
Wedges and Putter Precision
Kim’s wedge selection shows a clear focus on spin and control. He carries the Callaway Opus SP models in 52, 56, and 60 degrees. The 52 and 56 degrees both have a 10S grind, while the 60 has a C grind. According to GolfWRX, he keeps the same KBS Tour V 125 shafts in these wedges as he does in his irons. This creates a smooth transition in weight and feel through the bag. A consistent shaft setup helps a player trust their touch around the greens.
The putter remains an Odyssey prototype, a staple for many tour pros. He grips the club with a Golf Pride MCC, a standard choice for feel. The ball he strikes is the Callaway Chrome Tour. Using the same brand for the ball and the clubs is a smart move for consistency. It ensures the spin rates match what he sees off the face of his driver.
This equipment list tells a story about confidence. Kim isn’t afraid to run a full set of Callaway woods and wedges. He also mixes blade irons with a forged long iron. That mix isn’t for the average golfer who needs help. It’s for a player who hits the ball with precision and needs specific shapes. If you’re looking for a driver that controls trajectory, the 8.5-degree Quantum is a key tool.
The heavy shafts in his irons and wedges are a warning sign for high-handicappers. Most players need lighter shafts to get the ball up. Kim uses the weight to stabilize his swing. His choices prove that the right gear is about the player, not just the marketing. GolfWRX notes that he has these exact specs in his bag now. Watch how this setup performs as the season moves forward. The results will tell us if this bold shift pays off on the scoreboard.
