£279 / €325 / $339
Product not yet available

The RK50 is our expedition-size roll-top. To manage the extra load-carrying capacity, the RK50 comes with two tubular titanium frame stays as standard, plus a hip-belt whose design is stolen from the venerable AK range. The RK50's side compression system uses a beefy 10mm webbing in combination with a tension lock.

The RK50 will be available in two back lengths: Regular and Long.

Expected arrival date is December 2019



Technical Specifications

Capacity 50 litres
Weight 1150 g
Fabric 40% Kevlar / 60 % Cordura, 240 g/m²
Frame Two 7.00 mm tubular titanium stays (removable)

R (regular)
L (long)

Spares & Repairs

If you break any buckles or your frame stays (it does happen), then don't panic. We have replacement parts for nearly everything. Please go to the Rucksack Spares area 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 agents.


The RK50 will be available in summer 2016.

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