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First Look: Old Man Mountain Axle Pack puts Bikepacking Anything Cages on Any Fork

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, upper and lower Anything Cage positions
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We already got a sneak peek at Old Man Mountain’s new carry-anything Axle Pack back at the MADE show last fall – giving any fork more accessory mounts. But now they are available to buy. And we’ve strapped a couple onto a Mastodon fat bike fork to carry more and take our winter adventures further…

Old Man Mountain Axle Pack bolt-on fork accessory mounts

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, winter fatbike riding in fresh snow
(Photos/Cory Benson)

Two-position 3-pack mounts that fit any fork, no eyelets needed.

The Old Man Mountain (OMM) Axle Pack easily bolts directly to the end of your axle (requiring OMM’s own thru-axle Fit Kit ). That means they are strong and have nowhere to slide down or spin around your fork legs as you ride. The direct mount also means they get rated for a full 10kg in total 5kg/11lb per side. More than the 3-4.5kg per side that eyelet mounting is able to deliver.

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter

The super-secure off-road-rated setup is relatively light, and gives you 4 mounting bolts to get that weight low. Two position options for a 3-pack Anything cage OR the ability to install two separate 2-bolt mounts. For ex. a regular water bottle cage up top, and a tool cage down below.

What you carry is really up to your imagination. I’ve bolted a couple up to a Manitou Mastodon fork with a couple of cages. And strapped on a tent & sleeping bag. Or a couple of 1l Nalgene bottles. The most I’ve attached so far has been about 1.6kg per side. So, I’ll have to get more creative with packing to push up close to that 10kg weight limit.

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, tent and sleeping bag

Anyone have any ideas what I should carry in the snow?

Tech details & Actual weights

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, 175g brackets with hardware

The core of the Old Man Mountain Axle Pack are the two brackets that extend up the side of each fork leg. CNC-machined from 6061 aluminum in Taiwan. They then mount directly to a custom thru-axle made in the US by The Robert Axle Project with threads to bolt onto from either end. Up top, a pair of plastic fork Pucks get strapped around your fork leg with “ultra-strong” UV-stable Panduit zip-ties, providing a set of upper eyelets to attach the brackets.

All that, and an Old Man Mountain Axle Pack setup adds 265g to my fork, including all steel mounting hardware and the 3-pack bolts. OMM claims a weight of just 73g per side, which is just a single bracket without all the necessary hardware and special axle. Still, 265g is likely as light as other clamp-on mounting solutions. And the axle mounting is rock solid, with huge carrying capacity.

Figuring in a complete weigh-in… A couple of titanium King Manything Cages would be 68g a piece. Or a pair of the adjustable length aluminum Apidura Cargo Cages at 85g a piece. My Old Man Mountain 25″ Voile straps weigh 28g a piece.

All in my setup with 4 straps & one of each cage totals 531g, less than the weight of the water in my smallest bottles.

Easy mounting & setup

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, complete Borealis Crestone Manitou Mastodon adventure bike

Installing the Old Man Mountain Axle Pack was pretty much as easy as replacing any bolt-on thru-axle. Then bolting on a 3-pack mount Anything Cage. With that said, between the Axle Pack & Fit Kit – it came with 12 bolts of 3 different sizes, 6 washer/spacers of 3 different sizes, a couple of Axle Pack brackets, 8 heavy-duty Panduit zip-ties, and a replacement axle.

What it didn’t include were installation instructions, just a couple of QR codes that link to the OMM support page. Part of the adventure of testing things before they officially launch… Of course, I ignored those QR thingamabobbers, and plowed ahead.

Of note, the Axle Pack instructions are now online (here) – even though persinally, I still prefer the trial-and-error method.

Sure, I switched up a couple of the longer bolts/spacers from top to bottom, at first. But it all fit and worked pretty well.

Then, I realized that installing the longer bolts and the spacer up top between the bracket & plastic fork Puck better aligns everything. So, I sorted that out before my next ride. It’s all steel bolts and sturdy aluminum brackets, and I’m hauling much less than the max weight. So, it wasn’t a big deal.

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, lower poisition

But, correcting my install mistake meant I could drop the King Manything Cage to the lower position and get the 1kg weight of my 1L Nalgene bottle a bit lower.

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, correct installation

So, I would recommend looking at the install photos on the Old Man Mountain Axle Pack product page. Or this double Nalgene photo – here only – to get it right on the first try.

Unlike me.

Old Man Mountain Axle Pack – Pricing, options & availability

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, night riding

The new Old Man Mountain Axle Pack is available starting today and ready to ship for $60 for the 2-leg mount kit. They also come with a lifetime warranty for use on- or off-road.

To install it on your bike you will need an OMM front Fit Kit with its custom The Robert Axle Project thru-axle. Our Fit Kit for a Manitou Mastodon fatbike fork sells for $82 or $80 for our Fox 36 kit. Old Man Mountain also makes classic quick-release kits, but the new Axle Pack was only designed to use with thru-axles and their special Robert axles.

First Impressions Review: Old Man Mountain Axle Pack bolt-on fork anything cage accessory mount adapter, winter wonderland

Old Man Mountain says the new Axle Pack makes any bike a bikepacking bike. Whether it has a carbon, aluminum, steel, or suspension fork. It’s already helping us load up some fat bikes for bigger winter adventures!

Axle Packs and Fit Kits to fit virtually any fork in existence are available now, direct from Old Man Mountain.

OldManMountain.com

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12 Comments
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mud
mud
1 month ago

So, to remove the wheel, you unbolt from both sides? At least with tubeless it wouldn’t have to be done very often.

mud
mud
1 month ago
Reply to  mud

If you lose one of those bolts you’re screwed. I learned the hard way not to fix a flat etc. in high grass.

Gabriel
Gabriel
1 month ago

What’s the point of a suspension fork, if you’re just going to bolt on 23 lbs of unsuspended weight? Or is this intended for rigid forks without eyelets? I’d much, much rather just wear a backpack… maybe on the road this would be ok.

Ben
Ben
1 month ago

Looks like a nice way to add capacity for bikepacking. Virtually “any” fork, don’t think it will work on a Lefty, but that is what I get for having an oddball.

Matt
Matt
1 month ago
Reply to  Ben

Well, shape-wise, a Lefty isn’t actually a fork anyway. Or at least, I’ve never seen a fork with only one tine. Wouldn’t a “fork” with only one tine be more of a spear?

jett
jett
1 month ago
Reply to  Matt

More like a knife,lol

Matt
Matt
1 month ago
Reply to  jett

“Cannondale Bayonet” has a nice ring to it.

Dan
Dan
1 month ago
Reply to  Ben

doesn’t work on Lauf either

Dan
Dan
1 month ago

Works with every fork, except Lauf.

Mr.Mitch
Mr.Mitch
24 days ago

Not any fork. No mount for QR forks.

Rain
Rain
22 days ago

Why does a fatbike have a suspension fork? )

Travis
Travis
21 days ago

This looks like the best solution I’ve seen (old man mountain knows how to make stuff work w/ suspension!), but this would probably be my last resort (same w/ seat stay racks for full sus). Keep as much of the weight on the main triangle as possible.

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