F1 Mainframe
Regular F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe

F1 Mainframe

The Most Versatile Pack Ever

Regular price$299.00
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  • 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 700 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 F1 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.

MID-RANGE SETUPS

  • Pair with the Super Spike Duffel or Dry Bag with 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 EBERLESTOCK GUARANTEE
We are confident that we fulfill every order with the utmost quality, accuracy and timely delivery. In the event that we do not meet any of your expectations, we are happy to return or exchange items that comply with our simple guidelines
FIT & ADJUST YOUR PACK

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 609 reviews
93%
(564)
6%
(35)
2%
(10)
0%
(0)
0%
(0)
M
Mark C.
Highly Recommend

I've finally had a chance to use it and loved it. Comfortable and great quality. The flexibility with the various packs and accessories make it perfect for me for both day and overnight trips.

C
Chris H.
Did not disappoint.

Great modularity, lightweight, and well built. Whether you’re going on a day hike or an extended stay the F1 Mainframe has you covered from their long line of modular bags and accessories.

D
David F.
Great frame

Well engineered frame and back pack system.

S
Sheldon D.
Great Pack!

Just used this on a 5 day elk hunt it was 90 degrees two of the days and we put this pack through the wringer! Packed a big bull out with the batwings and really enjoyed everything this pack has to offer!

C
Curran
Mainframe

Very well made pack, makes carrying loads much easier!!!

M
Mason M.
Great Frame

Everything I was needing for Colorado elk hunts

J
James M.
Only pack I will ever need.

The Eberlestock F1Mainframe provides endless expandability options to take me from Whitetail hunting in the Allegheny’s to Elk hunting in the Rocky Mountains and beyond.

C
Cody M.
Meat hauling pack

I love that this pack is made for taller people. I am 6'6" tall and it fits my torso super great. I haven't healed anything with it yet except for a couple of neices and my son but it seems to keep the weight where it should be!

J
Jason J.
Good stuff

Only a few miles on the frame so far. I have used it with the vapor 5000, zip on dry bag, and zip on bay wings. Have not carried out an animal on it yet, but have been archery hunting steep country in the south San Juan’s of Colorado and it’s been a real back saver.

I love it. I’m am not kidding I freaking love this frame.

J
Jason P.
Mainframe

We’ll made. Shipped fast. Can’t wait to use it