2025 Kastle MX84

With some new updates to the build, the 2025 Kastle MX 84 takes all-mountain carving performance to the next level. We’ve loved this ski in all its forms over the years, and that continues into the 2025 ski season. This has always been one of those skis that just makes the cleanest and roundest turns on the market. While you can certainly use this in an all-mountain format, the 84 is at its happiest in a groomed environment. In this realm, the skis hook to the turn instantly, hold throughout the carve, and release dynamically into the next arc. Kastle has been known for quality and precision over the years, and those characteristics flow through seamlessly into the next season. While advanced and expert skiers will have the best success here, there is some wiggle room for progressing intermediates looking for a high-end product.

We see a bigger change in construction than shape, but at the end of the day, these skis aren’t wholesale changes from the MX 83 that this ski replaces. Kastle uses their InfiniCore construction to bring the MX 84 into modernity. They’ve always done a great job by using thin stringers of different woods to create a specific effect, and this is the latest iteration of that technology. In the MX 84, Kastle uses a blend of poplar and beech stringers. There’s a bit more poplar on the outer portions and denser beech through the middle. This creates a slightly more accessible turn initiation while keeping the bulk and spine of the ski totally stable and secure. Tester Brad Schauermann notes that the “Ski was super snappy and fun on trail. Definitely more of a frontside carver that seemed very approachable. Not super jacked up and stiff but fun playful responsive and snappy. Similar to a Wingman or Ripstick.” Another Brad, Moskowitz this time, states that the ski is “Powerful and all there!” This is due to the addition of two metal laminates to the ski for stability and smoothness. We do get less swingweight in the tips due to Hollowtech Evo—the whole shovel is reduced in mass to dampen vibrations and keep the ski on its intended path. The 176 hits 1940 grams on the scale, an uptick of about 80 grams per ski over the previous iteration.

While the name changed from 83 to 84, the general theme remains the same. These mid-80 mm all-mountain skis with an emphasis on carving are a whole lot of fun. In the 176, this ski generates a 16.3-meter turn radius, showing that they prefer to be on edge. Even in the 183, the 17.8-meter arc is capable of some shorter turns. There is minimal taper and rocker to speak of here, as these all-mountain skis hide a lot of front side tendencies. The wider shovel has slight taper but the tail is quite square and angular. This works harmoniously with the Hollowtech Evo and the metal in the tail. Initiation is somewhat accessible, but the finish portion of the turn lights it up. Moskowitz adds to his comments by stating that these skis are best for “Ripping groomers or maneuvering through tight trees and bumps, these skis are all-mountain machines! Less playful and more hard charging than other skis in this category.”

Best when on the feet of experienced and skilled skiers, the 2025 Kastle MX 84 is a pure carver that has extra width for manky and challenging snow. While they fall into the all-mountain division within Kastle’s line, they sure seem more like front side skis to us. That’s fine, and when they come along with endless stability, smoothness, precision, and quality, we’re not going to complain about much here. There is a price tag to go along with it, so make sure you’re willing to pay a bit more to get the relative performance.