Zag UBAC 89 Ski Touring Set + Bindings

The ZAG UBAC 89 is a versatile touring ski designed for skiers looking to tackle long ascents without sacrificing the fun of the descent. With an 89 mm waist, it’s the lightest and narrowest model in the UBAC line, built for demanding mountain excursions where every gram counts. It’s aimed at experienced ski tourers who are comfortable on varied terrain and want a ski that’s responsive on the ascent and capable of delivering on technical descents, even on hard snow. The balance between climbing performance and freeride feel is at the heart of this model’s design.

Lightweight for long ascents

At 1,300 g per ski (in the 176 cm length), the Zag UBAC 89 boasts a lightweight design that makes a noticeable difference from the very first hours of the ascent. This lightness is achieved through a paulownia wood core—a wood known for its particularly favorable strength-to-weight ratio—combined with fiberglass and carbon fibers that provide responsiveness and stability without adding bulk. The semi-CAP sandwich construction with ABS sidewalls ensures effective power transfer while maintaining a slim, maneuverable profile. On long, steep ascents, this choice of materials translates into reduced fatigue and better management of exertion over time.

Dimensions, Rocker, and Downhill Performance

With dimensions of 125-89-110 mm (tip, waist, tail) and a 19-meter turning radius in the 176-cm length, the Zag UBAC 89 features a multi-radius profile that promotes precise handling on varied terrain. The 25% rocker at the tip facilitates turn initiation and offers some forgiveness in transformed or powder snow, while the 15% rocker at the tail, combined with moderate camber, maintains grip and traction on hard or crusty snow. This ski’s stiff flex is suited for experienced skiers capable of pushing it to its limits on the descent, particularly on steep slopes where the precision of the high-strength steel edges is crucial.

Compatibility with skins and related equipment

The Zag UBAC 89 features a tip notch to securely hold the skins in place during ascents. The pre-cut UBAC SKINS 89, developed in partnership with POMOCA using a blend of 70% mohair and 30% nylon, are specifically tailored to the shape of this ski: mohair ensures good glide on the ascent, while nylon enhances durability and grip on the slope. The ski is also compatible with insert-style touring bindings and features a mounting system designed for crampons—a significant advantage on outings in demanding winter conditions.

A purpose-built design, manufactured in Europe

Developed at the ZAG Lab in Chamonix, the Zag UBAC 89 incorporates a concrete eco-responsible approach: 50% bio-based components, including 25% plant-based resin, recycled metal edges, and a black base made from 85% recycled materials. The organic cotton packaging rounds out this approach. These manufacturing choices do not compromise technical performance but demonstrate a commitment to considering the environmental impact of production.

For the experienced ski tourer who regularly tackles challenging alpine terrain, the Zag UBAC 89 offers a consistent balance between lightness on the ascent and confident handling on the descent. Its 89 mm waist width makes it suitable for both hard-packed and groomed snow, and its UBAC SKINS 89 skins allow it to be used directly in real-world conditions without compromising on grip or glide.