
Where I saw the biggest difference with the Tour 90 shaft compared to the rest of the KBS family was in the short irons. On average, however, I launched the Tour 90 about a degree higher.

My spin was virtually identical with an average differential of only two rpms between the two shafts. Ultimately, the KBS Tour 90 and Tour 105 performed very similarly for me. If you don’t fit that profile, this shaft could feel a bit noodley to you. You can have plenty of swing speed with the Tour 90 as long as you have the right tempo. I want to point out that “smooth and easy” doesn’t mean you need to be slow. I found anything the least bit aggressive felt sloppy and out of control. Feedback and response is good in your hands, but again, you need a smooth tempo in your swing. The shaft is very smooth in its kick, but anything other than a smooth tempo’d swing will be a struggle. While the Tour 90 has a “firm shaft design,” the lighter weight and “2-Flex system” make the shaft feel a little more flexible than normal. In fact, the Tour 90 is actually 20% lighter than a standard steel shaft. This is, of course, by design to fit a certain type of player or swing. Let’s not beat around the bush here – the KBS Tour 90 shaft feels extremely light for a steel shaft.

Players with lower swing speeds and smoother tempos looking for more distance are a good fit for this iron shaft. Though still a firm shaft design, the Tour 90 has softer tip and higher center of gravity to help players get the ball in air with more distance. The KBS Tour 90 shaft is the lightest steel shaft in the KBS lineup and designed to give players more spin, a higher trajectory, and greater swing speeds.
