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Not to be confused with the smaller DA (review to come), the Topeak Roadie DAX pump combines a larger chamber than most with a useful Dual Action stroke that's always pumping, whether you're pulling or pushing.
If it looks very similar to its smaller brother, that's because it's identical bar an extra 7.5cm length in the aluminium body. This boosts capacity to 33.5cc, meaning the DAX pumps 67cc of air per push/pull stroke – a near doubling of the standard DA's 36cc. The penalty is an extra 21g and a 26cm body that no longer fits inside a jersey pocket.
Mitigating this is the included frame mount, which is small yet very secure, is just 12g, and sits to the side of bottle cages. Add the 118g pump and the DAX is 130g ready to go.
The long, 16.5cm stroke makes this noticeably easier to use than pocket-sized pumps, and the Dual Action pays off quite noticeably. Tested on a 25mm tyre mounted on a 19mm rim, 100 strokes – a minute's easy effort – resulted in 60psi. After this point I found resistance ramped up quite steeply, so that reaching 150 strokes was actually quite hard work. Then again, at this point it had reached 85psi, so fair enough.
It's rated to 120psi, but getting far over 100psi still takes serious work you may not fancy just for the sake of getting home. Nothing about the pump will hold you back, however. Construction is stiff and strong, with rugged nylon encasing the black-anodised aluminium barrel. The head is just long enough for a full-fingered hold, and the raised rim and matt-finish plastic create good grip.
At the other end, a bevelled plastic cap keeps palms happy no matter how hard you're working, though with its fixed head instead of a flexible hose you must take care not to work so hard you rip your valve clean off. However, avoiding a hose – along with making the DAX Presta only – keeps complexity and weight down, which is a fair trade-off.
The DAX has both the look and feel of quality, as materials, design and finish are all impressive for the price. It's understated rather than flashy (if not a little dull), though at least the black masks some of its extra size. It might not stop some people thinking you've stuck a mountain bike pump on by mistake, though...
If you're running high-volume tyres, ride gravel or other puncture-prone surfaces, or just hate spending years at the side of the road clacking away to little effect, this pump is impressively deep-breathing. In fact, with just an energy gel's-worth of extra weight between this and the good-yet-unexceptional DA, the DAX is arguably the Roadie to go for. Especially if you typically frame-mount your pump anyway. At only £1 extra, price isn't really a factor.
For a capable alternative that still fits in pockets – and arguably looks far more exciting when you take it out – it's worth checking out the Zefal Air Profil FC03. It has nothing like the efficiency of the DAX, though it does offer a flexible hose, Presta and Schrader valve compatibility, and a 102g all-metal body.
More akin to the DAX is the Unich High Pressure Long Mini Pump which, at 23cm and 100g, is just slightly sleeker. Still too big for pockets, though. It too offers a flexible hose and multi-valve compatibility – plus shiny alloy good looks – though it falls pretty much halfway between the DAX and its smaller DA sibling for performance.
A dependable, no-nonsense tool for making punctures less of an arm-deadening delay
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road.cc test report
Make and model: Topeak Roadie DAX Hand Pump
Size tested: 25.8x3.2x2.8cm
Tell us what the product is for
Topeak says, "The Roadie DAX inflates high pressure road tyres fast. Dual-Action (DA) doubles volume by inflating on both the push and pull strokes. Integrated dust cap keeps pump head clean and thumb lock lever insures air-tight seal."
Tell us some more about the technical aspects of the product?
Presta compatible head with integrated dust cap
Inflates up to 120psi
Dual action pumping head
Side mount bracket included
Impressively well put together from strong materials.
The large-volume chamber and push/pull action mean it huffs a lot of air in a short time.
Alloy and nylon build can take the knocks of use and abuse.
Not the lightest pump, but worth the penalty if punctures are a real threat or you're running big tyres.
Intelligent shaping makes it easy on hands, though lever can be hard on cold fingers.
Performance is great for the price, and it should last, too.
Tell us how the product performed overall when used for its designed purpose
Noticeably speeds up the process of getting tyres to a usable pressure, for less effort than a regular minipump.
Tell us what you particularly liked about the product
Meaningfully shortens time spent at the side of the road.
Tell us what you particularly disliked about the product
It could be lighter.
Did you enjoy using the product? Yes
Would you consider buying the product? Yes
Would you recommend the product to a friend? Yes
Use this box to explain your overall score
The DAX is fast, simple to use and well built, plus it's secure yet easily accessed on your frame. Only the weight and unexciting looks really tell against it.
About the tester
I usually ride: GT GTR Series 3 My best bike is:
I've been riding for: 10-20 years I ride: A few times a week I would class myself as: Experienced
I regularly do the following types of riding: general fitness riding, mountain biking