Darimo’s handmade Spanish carbon Nexum road bike bar and stem combo is unbelievably lightweight. Claiming complete cockpit weights starting under 200g, it’s hard to call the Nexum anything other than ultralight. But it’s also incredibly customizable. It’s already available in a huge 35 size range (with at least another 70! in the works) so any size road rider will find their perfect fit, plus external or fully internal routing and multiple finish options, as well.
Darimo Nexum ultralight one-piece carbon road bike cockpit
all photos c. Darimo
Let’s just start that we call any carbon handlebar that weighs less than 200g lightweight already. Adding in a stem under that weight is unheard of, as far as I know. Many premium carbon bar & stem combos hover between 350-400g, while Wilier’s 0-bar & Syncros’ Creston iC SL dip as low as 325g. Even the wildly light Roval Alpinist cockpit weighs 255g.
Darimo claims a weight of 195g for the Nexus cockpit in a 90x420mm version, and still just 210g in the largest 130x440mm size. We haven’t seen the new one-piece carbon road bike cockpit on a scale yet. But having covered ultralight Darimo Carbon components up close for more than three years, I’ve personally only seen them claim weight heavier than what I’ve seen sitting on a scale.
Tech details
While the weights seem incredibly light, it’s not a far stretch since this cockpit is essentially made up of Darimo’s already light Ellipse carbon road bar (128g at 420mm) and IX4 carbon stem (71g at 90mm). In fact, you don’t actually save a tone of weight in picking Darimo’s new Nexum one-piece cockpit, it’s more a significant gain of stiffness, added security, and of course, cleanly integrated good looks.
The Nexum shares the bar shape of the Ellipse. It gets 77mm reach and 128mm drop, and is offered in five widths from 360-440mm, in 2cm steps. Stem-wise, the Nexum features a -6° angle only for now, but both -12 & -17º variants are already in the works. Seven lengths are available, from 70-130mm in 1cm steps. The stem’s clamp stack has been reduced to 43mm, clamped with ti bolts & alloy barrels around a 1.125″ steerer.
The made-to-order one-piece bar & stem combo is designed to be compatible with internal cable routing. Buyers can pick from external routing or internal Di2 cable routing through the stem. Darimo also says they can supply the parts necessary to route cables fully internal with non-round steerer tubes, and they have parts to install the ultralight cockpit with FSA’s fully internal ACR routing solution.
We haven’t seen any detail of it, but Darimo says the Nexum handlebar is “ready for installing computer mounts”, presumably with holes under the stem for an out-front mount.
Darimo Nexum ultralight cockpit – Pricing, options & availability
Darimo’s new ultralight carbon Nexum road bike cockpit sells for 850€, made entirely in-house at their València, Spain workshop. The new bar & stem combo is available in all four of their standard finishes gloss or matte, 3K or UD carbon, plus custom color decals to match your bike build.
Order yours from your local Darimo retail bike shop, or straight from the source.
This with a Gelu steapost-sadle.. sweet
Hopefully these bars are stiffer than the very spongy Ellipse.
Made in Spain. Here in Spain is very common not to value Our things and overvalue what come from another countries. I am guilty, I own several items from Schmolke. Made in Germany is here synonymous of high quality, but, after read this article, I just fall in love with Darimo, even cheaper than Schmolke. I am looking forward to own some Darimo products. Great Spain!
Víctor
Made in Spain!
Don’t want to take away from Darimo’s accomplishment here, but it is not that far off the (arguably nicer looking) Bontrager XXX bar/stem combo.
It’s all relative, a XXX would be 10% heavier but not having the same width / length / angle option that you have here.
Bontrager xxx 110×420 is 200g where have you been?
Exactly! mine 110x420mm @200g
Insanely cool stuff.
Minor nitpick about the number of combinations you list. You write “(with at least another 70! in the works).”
70! as written means 70 factorial. This is 70 multiplied consecutively by every integer from 69 on down to 1. A damn big number.
Writing it for emphasis, something to the effect of “….at least another 70(!!!) in the works…” would be better.
@nobody, even Bontrager website announce 242g for the 110×420 (https://www.trekbikes.com/us/en_US/equipment/cycling-components/bike-handlebars-accessories/bike-handlebars/road-bike-handlebars/bontrager-xxx-integrated-road-handlebar/stem-legacy/p/23239/)
Real weight are on around 240-250 except for smaller sizes that are in the 220g range… as usual for weights, WW is the bible https://weightweenies.starbike.com/forum/viewtopic.php?t=146531
Indeed, 1.2*10^100 handle bar combinations is a little optimistic, Covid shortages are really biting!
Very impressive indeed, and it makes a lot of sense if you are sure about you measurements, but there is no free lunch – the cost is vulnerability and rigidity besides a little doe…;-)