The question of who makes the game-changing Kirkland Signature golf ball isn't as simple as checking the box, but the direct answer is a company called Nassau Golf Co. Ltd., a well-established manufacturer based in South Korea. This isn't just a random factory, Nassau has a history of producing balls for major name-brand companies. This article will not only confirm who makes the iconic K-Sig but will also dive into its fascinating history, break down its performance on the course, and help you decide if it's the right ball for your game.
While we can confidently say that the current Kirkland Signature golf balls (the 3-piece V2.0 and V3.0 models) are produced by Nassau Golf, the story has a few twists. The original, legendary 4-piece ball that first shocked the golf industry was manufactured by a different company, Qingdao SM Parker, located in China.
This is a common practice in the golf industry. Most major equipment brands don't own the factories that produce their gear. Instead, they use Original Equipment Manufacturers (OEMs) like Nassau to produce products to their exact specifications. A brand like Costco provides the research, design specifications, and quality control standards, and the OEM handles the physical production.
So, while the name on the box is Kirkland Signature, the hands and machinery putting the ball together belong to Nassau Golf - a company with the expertise and technology to produce a high-performing, multi-layer urethane golf ball that can compete with the best in the business.
To truly appreciate the Kirkland ball, you have to understand the phenomenon it created. When Costco first released the "K-Sig" 4-piece urethane ball in 2016, it wasn’t just a new product, it was a revolution. Here's a look back at its incredible journey.
The original K-Sig sold for $29.99 for two dozen balls ($15 a dozen). This was an unheard-of price for a four-piece ball with a cast urethane cover - the same type of premium construction found in balls like the Titleist Pro V1, which retailed for nearly four times the price. Golfers were skeptical at first, but independent testing and word-of-mouth soon confirmed the unbelievable: the performance was shockingly similar to the top tour balls.
It had everything a golfer could want:
The balls sold out almost instantly. They became so popular that they were being resold on eBay for two or three times the original price. The Kirkland Signature ball wasn't just a good value, it was a legitimate unicorn in the golf equipment world.
This level of market disruption did not go unnoticed. Acushnet, the parent company of Titleist, sent Costco a letter claiming the K-Sig ball infringed upon 11 of their patents and that Costco's marketing claims a "Pro V1 performance" for a fraction of the price were unsubstantiated. Rather than fight a lengthy and expensive legal battle, Costco simply stopped selling the legendary 4-piece ball after selling through its inventory. It disappeared from shelves as quickly as it had arrived, cementing its place in golf lore.
Since then, Costco, now working with Nassau Golf, has gone on to release several new versions:
Looking past the hype and the price tag, how does the current Kirkland ball actually perform on the course? As a coach, I've seen hundreds of students play this ball, and here’s my honest breakdown of what you can expect.
This is where the Kirkland ball truly shines for the vast majority of amateur golfers. It features a lower-spin, high-velocity core that is fantastic for creating distance. Less backspin with the driver means more roll upon landing and a more penetrating flight into the wind.
Just as important, lower backspin translates to less sidespin. For the amateur who fights a slice or a hook, a lower-spinning ball like the K-Sig can help minimize those destructive curves, keeping the ball in play more often. It’s a very forgiving and long golf ball off the tee.
The K-sig delivers solid, predictable performance with irons. The 3-piece construction provides a good combination of distance and feel. Shots launch at a good window and have enough spin to hold most greens on approach shots. Players who like to work the ball with intentional cuts and draws might find it a bit less responsive than a premium tour ball, but for hitting straight, solid iron shots, it’s excellent.
The urethane cover is the star player here. Compared to cheaper Surlyn or ionomer cover balls (often called "distance" balls), the soft urethane cover on the Kirkland ball provides significantly more grab and spin on short shots. This allows for more check and control on pitches and chips.
However, this is where you'll notice the biggest difference compared to a $50/dozen tour ball. A Titleist Pro V1 or TaylorMade TP5 will generate slightly more spin on very delicate greenside shots. But for 95% of golfers, the amount of control the K-Sig offers is more than enough to get the job done effectively.
One of the criticisms of the earlier V2.0 model was its durability, with the cover showing scuffs a bit too easily from sharp wedge grooves or a trip to a cart path or bunker. It appears Costco and Nassau have listened, as the latest V3.0 models seem to feature a more resilient cover that holds up much better throughout a round. It’s no longer a significant concern.
From a coaching perspective, the most important question is: is this ball right for your game? Here's my simple guide.
Absolutely. For a new player, the Kirkland ball is arguably the best option in all of golf. You get the performance benefits of a urethane cover for a rock-bottom price. Losing one in the water doesn't sting, and its forgiving, low-spin nature off the tee will help you keep the ball in play. It’s a no-brainer.
Yes, this is your sweet spot. A mid-handicapper needs a ball that performs well in every category without breaking the bank. The K-Sig offers an ideal blend of distance off the tee, predictable control with irons, and quality feel around the greens. The money saved by choosing Kirklands over premium balls can be better spent on lessons or greens fees.
It depends, but you should seriously consider it. This is the group that might notice the subtle difference in max greenside spin compared to a Pro V1. If you rely heavily on spinning a wedge from 40 yards to a tight pin, you might prefer a premium tour ball. However, many low-handicappers find that the K-Sig's excellent long-game performance and astronomical value more than make up for this slight tradeoff. At the very least, every serious golfer owes it to their wallet to buy a box and test it for themselves.
The Kirkland Signature ball, produced by the capable hands at Nassau Golf, remains one of the greatest values across all sports. It delivers over 90% of the performance of an expensive tour ball for a fraction of the cost, making it an outstanding choice for a massive range of players.
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