£179 / €215 / $225

The AX50 is the same as the AX45, but with a floating, removable lid for greater versatility in packing different size loads. If we were comparing these to the AK range, whilst the AX45 is basically an AK47, you could say the AX50 is an AK47-X.
The AX50 has every necessary feature that is required from an all-round big mountain or alpine sack. It weighs just over a kilo and does so without any compromise in toughness and durability. It’ll handle every piece of abuse you can throw at it.
As with the AX45, the AX50 takes the existing AK carrying system that has been modified to allow the hip-belt to be removable.
The AX50 comes in a two back lengths – regular (for those up to around 5’11” or 180 cm) and long.




External lid pocket
Security pocket on inside of lid
Floating removable lid
Side compression straps – quick and easy to fit or remove
Oversized back haul loop – easy to grab and clip
Top compression strap
Dual drawcord closure system on extension sleeve
3 mm Tendon drawcord – can be used as emergency rap anchors
40 mm webbing waist belt with removable hip belt
Internal sleeve for hydration bladder
Two ice-axe holders
Wand pockets
Reinforced, double-layer base panel

Technical Specifications

Capacity 50 litres
Weight 1180 g
Fabric 15% Dyneema / 85 % Cordura, 150 g/m², ripstop
Frame Two 7.00 mm tubular titanium stays (removable)

R (regular)
L (long)

Spares & Repairs

If you break any buckles or your frame (it does happen), then don't panic. We have replacement parts for nearly everything. Please go to the spare parts section of our online shop.

Crux rucksacks don't often need mending, but they are not completely immune to abuse. Should your sack ever need repair, then please click here for details of our recommended repair companies.

Knowledge Base

For more information about our backpacks, please click on the following links below.
Sizing and fitting of crux backpacks
The physics of backpack design
Using the features of an AK pack