J51 Warhammer Pack
J51 Warhammer Pack
J51 Warhammer Pack
J51 Warhammer Pack
J51 Warhammer Pack
J51 Warhammer Pack
J51 Warhammer Pack

J51 Warhammer Pack

A great stand-alone pack with ample 3-day-class storage

Regular price $369.00
Volume: 2050 ci.
Shipping calculated at checkout.

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Add: G1 Little Brother

The J51 Warhammer is built around Eberlestock's innovative Intex-II frame, which gives the benefits of better body contour-fitting ergonomics, closer-to-body load carriage, and a bottom cargo shelf, in an intelligently designed package. Because the frame is fully wrapped in the structure of the pack, more along the lines of an internal frame than an external frame, we've eliminated frame noise, and built an exceptionally comfortable and well ventilated pack. The Warhammer is an off-shoot of our popular J79 Skycrane II, but has more generous side/main butterfly compartments, so in effect the Warhammer has more stand-alone capacity. However, the products are very similar in function, and use many of the same components. The Skycrane II system includes the G1 and LP1 packs, which can be purchased separately when building a J51-based pack.

By itself, the J51 is a great stand-alone pack, with ample 3-day-class storage and two pockets sized for 70 oz/ 2-liter hydration bladders (sold separately). It doesn't need any other components, depending on your personal preference. But you can do some great things by mixing and matching accessories and other bags to expand the system. In effect, you can build any pack you might conceivably need by pairing the J51 with some of our other products. To get a super-organized front-loading pack, you can zip a G1 Little Brother into the J51s load bay. Or for simpler bulk storage, choose a J2SD or J3SD Spike Duffel... or a combination of any two of these; you can attach two duffels at the same time, or you can embed the G1 pack into the interior of the pack by zipping a duffel outboard of it. Then, you can attach the LP1 FannyTop Go-bag to the J51s top panel. These practical options in a relatively lightweight and extremely efficient system make this a fun, versatile, and highly effective backpack. Note, for adding hydration, WX2L or WXP3L, we recommend installation in either the LP1 or G1 packs, or the A3SB Saddle Bags.

To finish off your pack system, you can add any of our weapons carriers. Our scabbards will attach to the generous MOLLE/PALS type webbing that adorns the load bay, and panels zip away from the top and bottom flaps in order to allow for the protrusion of long guns.


*NEW FOR 2021

The 2021 Warhammer now has baffles that allow more room when carrying a scabbard or pack on the frame.  When you're not carrying a scabbard the baffles can be zipped closed which gives you a more compact fit.

Recommended For: 

  • Military Ruck | Assault Pack

Recommended Add-Ons:

We expect our customers to be happy with our products, and the very low rate of returns that we get tells us that we’re on the right track. If you need help with something, or don’t understand how something’s supposed to work, the first thing that we invite you to do is to contact us. We’ll be glad to spend what time is necessary to solve your problem.

Eberlestock will issue a full refund for any item still in new and sellable condition that has been returned within 45 days of purchase directly from Eberlestock. Items purchased through alternative sites or dealers must be returned to them. We politely request you return items with the original tags still attached if possible. In some cases, missing tags and bags may result in a 10% restocking fee. Items with excessive pet hair, odor or dirt will be returned to the purchaser without refund.

  • 1000 denier nylon exterior
  • Total Volume: 2,050 c.i.
  • Weight: 8 lbs 8 oz
  • Dimensions main bag: 21"h x 12"w x 7"d

Customer Reviews

Based on 20 reviews

The quality and versatility of this make was way more than I was expecting. Well made and ready for more than I'm capable of. This is the last pack you will ever need.

Great pack

I've bought two.

I would love to gush over how much I am in love with this bag, but I would like to save the chara...

I'll start off by saying that I have been up and down the long road over backpacks, off the highest and the lowest quality standings, and I have not had the privilege of thoroughly examining all of eberlestock's products, but I have only ever seen a small handful of packs of this stature in years! This is quite possibly the most versatile, durable, workhorse of a pack available on the civilian market. The very spacious batwings built on to this, along with at the very minimum zip a little brother pack plus a spike duffle , or two spike duffles, or multiple batwings because of its 4 possible zip location(2 on the main bay, 1 on each batwing). The center molle panel, which you can rig or strap, in an assortment of ways, almost anything to the center load bay. All seated on an Alice frame, that I know is worth it weight in gold on its own in the bush. The material, seams, and zippers are almost over done, and the buckles make most of the other higher end hiking backpack buckles and straps look like cotton twine. The only thing I would like to ask is when are you guys making more zip on features, and also some other companies make some zip on panels and pockets and I'm curious as to whether any of them would be compatible. Great job with this pack! I would have paid double!

It’s better than I was

On the premise of “don’t be an idiot and use un-tested gear”; that’s exactly what I did. And it was GREAT!!! Here’s all the things I did wrong:
1) never tested it before a 3 day trip;
2) didn’t size the harness well;
3) didn’t buy some accessories that would have been great until well after the fact.
And the results:
1) it’s such a great pack that I was still pretty happy with my trip. Hills, swamps, lots of rain, 61lb pack without water.
2) Although I eventually sized it right after the trip, I was pretty comfortable throughout. The pack’s ability to keep the center of gravity close to the user is almost unheard of in other brands that would rather just make the weight taller. Getting back to the proper sizing: I found the Eberlestock sizing video when I got home. Watch that, it’ll also help with a bit of familiarization with the gear.
3) The rain cover I wanted was sold out, but everything was in ziplock bags. My hydration bladder was slung on the side behind one of the main compartments. It worked but wasn’t pretty. The FannyTop is on the was.

I’m so glad this pack was made to be better than me as a user. Now that I’ve hopefully smartened up, I have a new 5 day trip on the horizon, some accessories coming, it’s sized properly, and I’ve even tested it more by throwing some weight in it and going up and down 75 flights of stairs in my building with no complaints (at least for the pack).

This pack makes you look forward to carrying heavy things.

Base For Short Camping Trips

The J51 with the G1 zipped in and the Spike Duffel strapped on worked out great for a weekend excursion to the mountains. Was able to pack everything we needed.