Mainframe
Regular F1 Mainframe
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Mainframe

Mainframe

The Most Versatile Pack Ever

Regular price$299.00
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SKU:

F1HM

Color
Size
  • In stock, ready to ship
  • Inventory on the way

The primary base platform for the EMOD™ system with a constantly growing number of accessories. Build it up to be a multi-day expedition pack, or go in light so you can come out heavy.

Tested to hold more than 1300 lbs., this ultra-rugged frame utilizes top of the line zippers to allow the attachment of a variety of packs and accessories to fit any backcountry hunt. The Mainframe™ is fully adjustable and completely user configurable with endless combinations. 

ULTRALIGHT SETUPS

  • Use the Vapor 2500 or 5000 for any length adventure with ultra-light considerations. 
  • Use 2 Batwings when you plan to go in light and come out heavy. Stay quick, light, and mobile with the Batwings. They are intuitive and make packing out meat simple.
  • The Bolt Action Scabbard and EMOD Lid are great options to carry your rifle and gear handsfree.

MID-RANGE SETUPS

  • Pair with the Basin or Batwings for a 2-4 day hunt. Pack all of your gear into the backcountry and when you reach camp and drop your gear, unzip the duffel or dry bag and hunt in your ultralight Batwing setup.
  • If you like the organization and function of a backpack, the new Vapor 5000 is the ideal choice for a 2-5 day trip. Allows for top-loading or front-loading access and use the Mainframe when it is time for some heavy lifting.

EMOD Compatible

Load Bearing

Meat Hauler

Intex II Frame

The Vapor Series

Available in three size options — the Vapor Series redefines ultralight hunting.

Batwing Pouch

The perfect option to build a minimlaist day pack.

Pairing the Mainframe with Packs

See some of the most popular setup options with the Mainframe.

REGULAR PRODUCT SPECS

  • Weight: 4 lbs 5 oz
  • Dimensions: 26"h x 11"w

TALL PRODUCT SPECS

  • Weight: 4 lbs 8 oz
  • Dimensions: 29.5" x 11"w

PRODUCT FEATURES

  • Built-in Grapple compression straps
  • Zippered attachment points
  • MOLLE webbing matrix on main panel
  • Adjustable ladder harness system

F1T (TALL VERSION) PRODUCT FEATURES

  • Tall version is 3.5" taller than the regular size
  • Designed for those with torso lengths measuring 19 inches or longer
  • Tall Mainframe is compatible with the same accessories and packs as regular Mainframe

Customer Reviews

Based on 720 reviews
93%
(668)
6%
(41)
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(10)
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(1)
P
PAUL L. (Idaho)
Mainframe review

The mainframe is awesome. I have packed a lot of elk in my life on different pack frames. This frame is simply one of the best I have used. The only negative I have for this system is the unbelievable lack of organizational pockets in the packs that attach to the frame

J
Jacob C. (Illinois)
Best pack ever.

I bought the Mainframe with 2 Batwings to use mainly as my day hunting pack. I saddle hunt on public land and often walk in a fair way. This pack is perfect for that use. It carries super well, doesn't rattle or creak, and is decently light. I slip my platform and saddle behind the Batwings, all my smalls like flashlights and kill kit go in the pouches, then strap my steps to the back. After seeing the quality and feeling how well it carries I'm definitely going to get some of the other accessories and possibly pick up an X2 to replace my assault pack.

J
Josh M. (California)
Great Kit

The open frame concept is new to me, but makes the most sense when hunting. I've always liked internal frames on my packs, whether hiking or military use. The idea of the mainframe being versatile was really convenient for this hunting season in particular because I was hunting offthe back of a dirt bike.

To start, I like the scalability of it. Adding only batwings wasn't quite enough, so I needed more space. By the time I figured that out though, it was the day before leaving for my hunt and I just didn't have time to get the additional lid, so I retrofitted a lid from a hiking pack that I already had. That'll be a future addition. Being able to add a normal pack to it will be nice though too, for when I backcountry hunt. Being able to drop non-essential weight and run just the frame and a couple pouches to manage game is really nice.

Getting the whole kit pulled tight and compact was great when adding a bow to the whole package. The frame was really sturdy, as expected. Better yet though, it fit me really well. The shoulder strap adjustment was ample to get a great fit for my torso. The padding was comfortable and didn't make me sweat excessively, so great ventilation. It was honestly the least worrisome piece of equipment I had. Which was a huge relief, because some of the single track in Idaho is hard enough just for fun, but adding the extra weight and dynamic of a bow and pack hanging off your pack can be a whole new challenge. The way the frame fit me, it was almost not there. I picked the shorter of the two frames available, so I had lots of clearance at the top for low clearance areas. The bottom of the pack didn't stick out too far either, so it never interfered with moving around on the seat. I was still hopping downed trees and large rocks like normal without adding anything to the equation. Because of all that, packing out also didn't create a huge challenge other than a little extra weight to balance, but that's a task that falls on me and not the mainframe.

Only pet peeves are: 1) The outside corners of the shelf are exposed, so when I sat down with rocks that were a little tall, it scraped off paint and made excess noise. Not a huge deal, but now it's scratched up and I have exposed metal to watch over time. B) The cummerbund could use some elastic bands at the hemmed end of the tightening straps to roll up the excess strap when fully snugged up. I sat on the excess a few times and tugged at it while trying to ride. Fixed with tape, but a few inches still dangle. It also aggravates my 'tism from the military with having unsecured straps. They're an actual hazard, though admittedly I was using it in an unorthodox manner.

Overall, solid kit. For the one week that I had it, it was exactly what I needed. Day packs are great, until meat pack out. Expandable packs are great for pack out, but someone's they add too much weight and bulk when you don't need it. The mainframe fixed both of those "issues" and was actually really convenient from atop a dirt bike. Bravo, gents.

C
Chris (Oregon)
Flexibility

I love the flexibility that the EMOD system allows for customization. I was looking for a packout frame and came across this system. I just started building it out and it’s been great. Would highly recommend for anyone who is looking for more than just a daypack.

A
Anonymous (California)
Great Pack

Light, comfortable, and customizable. The system makes carry heavy loads easier and is very durable.

A
Anonymous (Alabama)
Excellent modularity

This is the best frame produced if modularity is your focus. Nothing else produced can touch it in that regard.

E
Ethan

Haven’t used it in the field but with the new bat wings it’s A sweet set up I can’t wait to try for elk and deer season