
Exo Mtn Gear
Exo Mtn Gear K4 5000
Exo's weeklong workhorse: a 5,010 ci bag (5,658 ci / 93 L with the included lid) on the carbon-stay K4 frame rated past 150 lbs, sold as a complete $700 system. It pairs a roll-top plus horseshoe zip with the deepest stock organization in the flagship class, with four frame heights and five hipbelt sizes built in Boise, Idaho.
Price and availability on Exo Mtn Gear’s site may differ.
Specifications
What do these specs mean? →Sizes Available
| Capacity | Price | Weight |
|---|---|---|
| K4 2200 (36 L) | — | — |
| K4 3600 (59 L) | — | — |
| 93 Lthis pack | $700 | 5.8 lbs |
| K4 7200 (118 L) | — | — |
Features
Pros
- ✓Rokslide's multi-tester review called the K4 'the most comfortable pack tested' against the industry's best, crediting the custom carbon-stay frame and redesigned harness.
- ✓Fit options lead the category — four frame heights (22–26.5 in) and five hipbelt sizes (XS–XL), backed by a 30-day trial, versus pick-a-curve guesswork with Stone Glacier's Krux/Xcurve.
- ✓Organization is the K4's calling card: horseshoe zip into the main bag, stretch front panel, full-length zippered side pockets, and laser-cut MOLLE — owners say it's the easiest flagship pack to live out of.
- ✓The flap-style load shelf deploys without pulling the bag off the frame, making day-pack-to-meat-hauler transitions faster than Stone Glacier's unbuckle-everything approach.
- ✓The included lid adds ~650 ci and the price includes the complete system — no a-la-carte lid or frame math like Kifaru builds.
- ✓A dedicated hydration compartment with a drain grommet keeps a leaky bladder from soaking your sleep insulation, a detail forum users repeatedly call out.
- ✓Owners rate it 4.9 stars across 529 reviews on Exo's site (98% five-star), and the Boise-based customer service earns Rokslide praise rivaling Mystery Ranch's.
- ✓Integrated bow and rifle carry work stock, and treadmill-style testing threads report no harness slippage running uphill with 30+ lb loads.
Cons
- ✗The bag tapers narrow at the bottom — Rokslide users report bulky sleeping bags like a Western Mountaineering Kodiak in its stuff sack fight to fit.
- ✗Several owners in the long-running K4 thread report harness or hipbelt slippage once loads pass roughly 60 lbs, requiring re-tensioning on pack-outs.
- ✗Side pockets use a single zipper that interferes with the lid when it's fitted — a two-zip design is a common owner wish.
- ✗Bow Spider users note the mount's metal clips don't line up with the K4 hipbelt MOLLE spacing, forcing workarounds for a popular accessory.
- ✗Hipbelt pockets aren't included — the MOLLE belt is bare until you buy Exo's add-on pouches, unlike some competitors' stock belt storage.
- ✗At 5 lb 13 oz complete with lid, it's the heaviest of the big-three frame systems — about 0.3 lb over a Sky 5900 and half a pound over a Metcalf 75.
- ✗The lighter K4X update (about 1 lb savings in prototypes) has limited release in summer 2026 with full launch in 2027, so buyers today are getting last-generation materials.
- ✗Exo sells essentially direct-only, so outside the 30-day trial there's no trying one on in a store the way Scheels stocks Stone Glacier and Mystery Ranch.
Common Questions
Compare the Exo Mtn Gear K4 5000
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