Alpinestars Denali 2 Shorts Review 2026

Cold-weather mountain bike riding demands different kit than summer trail riding, and the Denali 2 Shorts are Alpinestars’ answer to that requirement. Built around Primaloft Bio Silver insulation panels and water-resistant construction, these are shorts designed for riders who continue riding through winter rather than storing their bikes at the first sign of cold.

The thermal foundation is 60g Primaloft Bio Silver insulation on the front panels. Primaloft Bio Silver is a premium synthetic insulation with environmental credentials: the Bio component uses a material designed to biodegrade faster than standard Primaloft at end of life, while the Silver component adds an odour-resistant treatment. At 60g weight, the insulation provides significant warmth without adding the bulk that would compromise riding mobility. Extensive stretch panels throughout the shorts complement the insulation panels, maintaining the mobility needed for the full range of MTB body positions.

The water-resistant outer construction repels mud and moisture from wet trail conditions, keeping the insulation layer functional in the rain. Zippered side ventilation openings give active temperature management: when climbing intensity raises body heat significantly, opening the vents prevents overheating beneath the insulation without having to remove a layer. When descending in the cold, closing the vents retains warmth.

The seat area is reinforced with 400 denier poly-fabric for abrasion resistance, protecting the high-wear zone from repeated saddle contact. A flat-snap connection system allows Alpinestars’ Alps Inner Shorts to be attached directly to the Denali for a secure integrated kit setup on longer cold-weather rides. The precision waist closure combines hook-and-loop adjustment, an elasticated waist, a snap button front, and TPR pullers for a personalised, secure fit, while the interior fleece waistband keeps the skin comfortable at the waist.

Who is the Alpinestars Denali 2 Shorts aimed at?

The Denali 2 Shorts are for serious year-round MTB riders who need a premium cold-weather outer short for winter trail riding, enduro training, and alpine MTB in variable conditions. The Primaloft insulation, water resistance, and thigh vents make these a complete cold-weather shorts solution for riders who don’t compromise on performance regardless of season. They work particularly well paired with the Alps Inner Shorts for long cold-weather trail days.

Specifications:

– Extensive Primaloft Bio Silver insulation panels (60g, front) for thermal performance
– Water-resistant outer construction for weather versatility
– Extensive stretch panels for high mobility on the bike
– Seat area reinforced with 400 denier poly-fabric for abrasion resistance
– Zippered side thigh ventilation openings for active temperature control
– Hook-and-loop closure with elasticated waist adjustment, snap button front, TPR pullers
– Flat-snap connection system for compatibility with Alpinestars Alps Inner Shorts
– Interior fleece waistband for skin comfort
– Durable YKK main zip

The Denali 2 Shorts are a serious piece of cold-weather MTB kit at £124.99. Primaloft Bio Silver insulation, water-resistant construction, and intelligent ventilation make these a genuine technical solution for year-round riders who need their shorts to perform when the temperature drops.