2027 Salomon Shift Alpha BOA 120 Ski Boots

From first lift to a quick skin up the boundary line, the Salomon Shift Alpha BOA 120 is built for skiers whose ski days don't stay inside the resort gates. A hybrid alpine-touring boot with a true 98mm last and a walk function, this 120-flex shell pairs a stiff downhill feel with a usable hike mode and tech inserts at the toe and heel. The BOA Fit System on the cuff micro-adjusts upper-shell tension while two lower buckles handle the foot, and Salomon's Freespine cuff geometry keeps power transmission in line with the brand's resort-only boots.

Why we like it:

The combination of low-tech inserts front and back with a fully GripWalk-compatible alpine sole means this boot moves easily between pin bindings and standard alpine bindings without compromise, which makes it the rare hybrid boot that genuinely earns the name.

Who it's for:

Skilled advanced and expert skiers with on-the-narrow-side feet looking for one boot that can do everything: hard inbounds days, quick sidecountry laps, and occasional longer tours. The Shift Alpha is built for skiers who prioritize downhill performance over uphill efficiency, so dedicated tourers logging big vertical should look at the MTN line instead. Foot shape is a real constraint here; the 98mm last is cut snug for performance and won't suit wider feet.

Highlights:

The Shift Alpha BOA 120 uses a polyurethane shell paired with a polyolefin and cross-linked polyethylene cuff for a more compliant flex in walk mode without sacrificing alpine power. The Twin Lock walk mechanism switches the cuff between ski and tour modes with a positive click, while Salomon's Freespine adds a fiberglass spine to the back of the cuff for direct rebound when driving the boot hard. Inside, the CF Freeride 4D Race liner with Light² Footbed is heat moldable and has a walk function and lace loops for added customization. A 45mm Energyzer Velcro strap finishes the top, while a BOA Fit System dial on the cuff and two aluminum buckles on the lower shell handle closure. GripWalk soles are premounted (ISO 23223) and low-tech inserts at toe and heel make the boot pin-binding compatible. Two hiking hooks on the buckles let you loosen down quickly for hike mode without losing your buckle settings.

Things to consider:

This is a downhill-biased hybrid; the walk mode is functional but the range of motion isn't going to compete with a dedicated touring boot. Skiers planning long ascents should look at the MTN Summit line. The 120 flex is genuinely stiff and built for skiers who can drive it.

Fit & sizing considerations:

The 98mm last is performance-oriented and runs low-volume. With a touring-capable hybrid at this flex level, a proper bootfitting session is worth the time; the cross-linked polyethylene cuff has different heat-molding characteristics than a pure polyurethane shell, and a good fitter will know how to work with it.