Kastle MX 98 Review: A Powerful, Stiff All-Mountain Ski for Advanced Skiers

Introduction

The Kastle MX 98 is a wide-bodied all-mountain ski built for skiers who carve hard and want stability at speed. At roughly 100 mm underfoot, it sits in a class where many skis chase all-round versatility. This one chases power. It is a carryover model, so the build, the graphics, and the on-snow character carry over unchanged from the previous season.

The construction reads much like a race ski. A Poplar and Beech wood core is layered with two sheets of fiberglass and two titanal laminates, which is why the ski comes across as strong, stable and stout rather than light and loose. Skiers who prefer to drive a ski hard rather than steer it gently will recognise the intent right away.

That said, this is not a casual ski. It is on the heavier side and on the stiff side, and the combination of shape, build and width makes it demanding even for accomplished skiers. There is simply a lot of ski here, and the way it is put together places it near the top of its class among roughly 100 mm all-mountain models.

Who the Kastle MX 98 Is For

This ski is aimed squarely at advanced and expert skiers. Former racers and anyone who knows how to carve a clean turn but wants a wider body underfoot will find the most to like here. The MX 98 asks for a strong, technical pilot who is comfortable pushing a ski into the snow rather than finessing it.

It is less suited to skiers who want an easy, forgiving ride or who spend most of their time in soft snow and tight trees. The build that gives it so much grip and stability is also what makes it feel like more work in those situations. If your priority is playful, drifty performance, there are more suitable options in this width range, including within the wider Kastle line and from other brands.

Main Strengths: Construction and Stability

The headline upgrade in this generation of the MX 98 is a pre-preg fiberglass laminate. Instead of each ski receiving its fiberglass layer individually, the laminate is built beforehand and then installed into the ski, which improves consistency across the production run. The change did not transform the feel of the ski, though it does come across as slightly snappier and more poppy than before.

Around that core you get the full race-style package: two sheets of fiberglass, two titanal laminates, Hollow Tech 3.0 with a carbon inlay, and a substantial metal block at the tail. Materials and finish quality are high throughout. That tail block gives the back of the ski a supercharged feel when you come out of a turn.

Weight lands at over 2,000 g, measured at about 2,070 g in the 178 cm length. That heft is part of the package. Combined with the stiffness, it produces a ski that you really have to push to bend, and when you do, it feels about as solid as it gets. For expert skiers who value composure at speed, that trade-off is the whole point.

Shape, Profile, and Turn Character

The profile is deliberately direct. There is tip-to-tail edge contact and a long effective edge, which produces a 20.9 m turn radius in the 178 cm length. This is a ski that likes to attack the fall line rather than drift across it.

The shovel shows very little taper for a ski of this width, reinforcing that long effective edge. There is some rocker, but not much, and it functions more as a helper for entering and exiting turns than as a platform for a loose, surfy feel. The tail follows the same philosophy: full metal, essentially squared off with the slightest bit of taper, just enough to separate it from a full race ski.

Where It Performs Best

Groomers are home territory. The MX 98 is happiest on trail, where the stiffness and metal construction translate into confident, high-speed carved turns and big GS-style arcs. If you like to hit top speeds and lay the ski over, this is where it earns its keep.

It also holds up in the kind of off-piste terrain where stability matters more than float: open bowls, chalky snow and wide, committing lines where you need the ski to run. Taking it further off trail is where the construction starts to work against you, since the same rigidity that makes it calm at speed makes it more difficult to manage in soft, variable snow.

Think of it as a wider-bodied carving ski rather than a freeride tool. Judged against that brief, the blend of grip, weight and edge hold is exactly what you would hope for.

Things to Consider Before Buying

The first consideration is weight. At roughly 2,070 g in the 178 cm length, the MX 98 is a ski you move deliberately rather than flick around. If you are used to lighter all-mountain skis, the difference is noticeable on the first run.

The second is stiffness. You have to push this ski to get it to bend, and lighter or less aggressive skiers may never find the sweet spot. It is a genuinely demanding ski, even for strong skiers.

The third is playfulness. There is not a lot of it built in. Riders who want to spend their days in the trees or in soft snow will find better-matched options in this width range.

Buying Advice

Buy the Kastle MX 98 if you are an advanced or expert skier who carves with intent, skis at speed, and wants a wide ski that behaves like a race-bred carver. It suits groomed runs, big arcs and open, chalky off-piste terrain where a stable platform lets you run.

Skip it if you want a light, easy-going all-mountain ski, or if your season revolves around trees and deep, soft snow. The MX 98 is a specialised tool, and it rewards skiers whose technique and terrain match what it was designed to do. Match it to the right rider and the weight and stiffness stop feeling like drawbacks and start feeling like the reason to own it.

Conclusion

The Kastle MX 98 is a powerful, stiff and stable roughly 100 mm all-mountain ski with a race-style build, high-quality materials and a clear sense of purpose. It is heavy, it is demanding, and it is not playful, but for advanced and expert skiers who want to carve hard, hold an edge and stay composed at speed, those are precisely the qualities that make it worth considering.