OneUp Components EDC stem review

Our rating 
4.5 out of 5 star rating 4.5
GBP £78.00 RRP | USD $115.00
(+£27.50 for preload kit)
OneUp Components EDC stem

Our review

Not just an excellent solution to fork-steerer-threading for the EDC tool, but a decent addition to any cockpit
Pros: Another well thought-out design solution from the boys in Squamish, BC; simple to install and move between bikes; the stem is good as a standalone product regardless of the EDC system
Cons: Fitting is a little confusing initially; only available with a 35mm bar clamp
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When we reviewed OneUp Components’ unique fork-steerer-mounted EDC multi-tool, we concluded that it was one of the best on-bike storage solutions we’d tried, although not all were convinced by the requirement to remove the star nut from the fork steerer and thread the tube to fit the hollow cap.


In reality, we found this to be simple and far less daunting than it sounded, but the extra hassle and potential to void the fork’s warranty was a sticking point for some.

The Canadian brand has now come up with an ingenious solution, in the form of a stem that features a hidden wedge system in the underside to tension the headset without a star nut.

You can then slide the EDC tool (not included) down inside the fork steerer. With a spacer slotted into this recess, it can be used just like a conventional stem, but by removing this and replacing it with the supplied preload kit, the EDC tool can be installed while keeping the steerer intact.

OneUp has detailed instructions for how to do this on its website and, although they take a little to get your head around, once you’ve fitted the stem for the first time it’s easy to understand how it works.

OneUp Components EDC stem
As a component in its own right, the stem’s CNC-machined aluminium design is elegant.
Andy Lloyd

Because the conical wedge isn’t that tall, it can only take a limited amount of play out of the headset. This means care must be taken to add the correct number of spacers and to preload the headset sufficiently by hand before it’s nipped up by the wedge.

A torque of 3Nm is recommended for this, although I found I had to overtighten the 3mm bolt a little to prevent it working loose. When I asked OneUp about this, it said it was fine, provided that I didn’t exceed 5Nm.

As a component in its own right, the stem’s CNC-machined aluminium design is elegant and, although it’s marginally heavier than some, at 166g (35mm length), once you factor in the removal of your star nut and bolt, you’re likely to make a weight saving.

The split faceplate keeps a broad (55mm) grip on the bar, limiting flex, and the zero-gap clamp makes installation easy.

There are 35mm and 50mm lengths (both with a zero-degree rise), but the EDC will only fit 35mm-diameter bars – OneUp has designed it to pair with its new oversized carbon bar.

A handy tick line in the centre of the stem helps you centre your bar perfectly, although there are no lines for rotational alignment.


On my first couple of rides there was a small amount of headset play. This has disappeared now that it’s ‘bedded in’.

Product Specifications


Price GBP £78.00USD $115.00
Weight 166g (35mm)
Brand Oneup components


Features Stack Height: 38.5mm
Bar Clamp Width: 55mm
Top Caps available: Black, Red, Green, Blue, Orange, Purple & Gold
Length 35mm
Material Aluminium