A good alternative to running an EDC tool in your steerer tube, the 100c model will fit tool, tool holder/chain breaker and carry compartment or large CO2 canister.. I run bacon strips and Oneup pig sticker and pliers in the carry compartment myself, along with a couple quick links stashed inside the tool holder - equipped for any eventuality. The pump itself inflates quickly and efficiently, the included holder securely fastens it under your bottle cage, and rocks, bumps and jumps haven’t dislodged it or even caused it to rattle, really nice snug fit with retaining strap. The CNC finish on the pump is really nice too.

OneUp components are awesome is a great pump just make sure you have press the valves in all truth you could probably get away with the lower capacity pump but if you want to storage go with this one

Awesome quality super fast delivery

In my quest to ride without a pack but still be able to carry the basics for a trailside repair AND have a system that easily transfers between bikes, this pump has been priceless.

Using the larger version of the pump combined with the edc tool and a frame strap allows me to carry everything I need to support 2hr rides without needing a pack of any sort.

It's also a super solid construction, and might come in handy to fend off aggressive beasts on the trail. It's large enough to have decent volume, yet still compact enough to fit horizontally in an evoc hip pack or Henty enduro pack.

The pump unit and edc tool carries:

A CO2 head
Tyre lever
Multitool
Chain breaker
Spare link
In the little compartment I then carry:
A dynaplug racer
Spare plugs
String (for disconnecting a master link)
Wrapped in a $5 note (tyre boot)

Everything is moved between bikes in less time than it takes to get your bladder in your pack.

This is the nicest pump I've ever owned and im impressed! It is beautifully machined and lightweight and well thought out. I love the dust seal that holds the handle in when not in use. It means i can strap this pump on my frame and never worry about it coming loose.

I've also added the V2 EDC multitool with a CO2 cannister on it and everything holds together nicely with no rattles that I've noticed in the 200 or so kilometres ive done with it so far.

Only thing ive not yet used is the CO2 cannister adapter feature. However i have a seperate adapter that is faster and easisr to access so i feel im much more likely to use that in an emergency, even if it does cost me a few extra grams to carry it around.

Quality pump that you wont regret buying. And did i mention the sexy metallic green?

What's not to like about OneUp Components. The pump is very well made and extremely robust. I also purchased the OneUp EDC Tool kit which integrates with the pump, this enables you to carry everything you need to get you out of trouble on your bike, so you can ditch the bags and travel light.
Highly recommended.