A Deda Elementi
Superzero stem. I picked one up.
I'm using it on a bike in the 4kg range, but this stem isn't particularly heavy,
though it's not exactly light either.
Plus, Deda has even lighter stems than this.
The lightest is the Superleggero, then the Zero 100, and after that the Superzero,
but in actual measured weight the Superzero ties for second place.
This stem comes with something called a D-clip, which is a decorative part, not a functional component.
In the "Black" color option, where the stem body is black with gray lettering,
it comes with a red D-clip,
and in the "POB" color option, where the stem body is black with black lettering,
it comes with a black D-clip.
The D-clip is made from a slightly soft material with a tighter radius than the handlebar clamp section,
and snaps onto the handlebar to boost your style factor.
... That's really all it does.
So, why did I buy this stem when I can't really call it a super-lightweight option?
First reason: a separate accessory called the "Di2 Clip" can be mounted on it.
It's mostly the same shape as the D-clip,
but it allows you to mount the top junction for Shimano's electronic shifting components.
Just snapping it in seemed a bit unreliable, so
↑D-clip
↑Di2 Clip
the lower end of the clip catches inside the stem,
and the stem's shape is designed so that as long as the front cap is fixed to the handlebar,
it won't come loose.
Since people will probably ask: I'll mention upfront
that the Di2 Clip is exclusive to the Superzero stem.
It won't work with Deda's other models or other stems.
Unless you include modifications, maybe...
I snapped it on. Even with the orientation shown in the photo,
there's enough holding power that the top junction doesn't sag from its own weight.
Installed it.
There's a slight wobble left and right,
but it won't come off even if you pull on it.
By the way, Deda's handlebar clamp diameter is typically 31.8mm on most bikes,
but Deda uses 31.7mm, and on some carbon bars it's marked as 31.75mm,
so Deda stems and bars aren't compatible with other manufacturers' products.
So good kids should use Deda with Deda!
Bad kids should use it at their own risk!
Speaking of the front cap in the photo above, regarding its left/right and up/down orientation:
The left/right and up/down orientation instructions are on the back of the front cap.
R = Right means on the right side in the direction of travel,
which in the earlier photo is the side where it says "Superzero."
Even though there's a specified orientation, the manufacturer says there are no performance or safety issues if it's installed left/right reversed or upside down,
but the distributor I bought it from says they want it installed according to the specifications.
At least the distributor I bought from apparently did a 100% inspection before shipping,
but apparently there are units that come out wrong from the factory.
Or it's possible it gets reversed during installation,
so if you're using this stem, you might want to check it once.
Control Tech's Scored 99 stem is also light and nice,
and I thought about mounting just the Deda front cap and maybe modifying the Di2 Clip,
but the screw hole positions didn't line up at all, so it didn't work out.
Got it installed.
（I follow the orientation of the front cap even though it has no functional impact,
but I'm ignoring the handlebar orientation which seems more problematic.）
And the other reason I bought this stem is:
because the side of the stem body is flat, so the Lezyne bike computer's two-sided tape
mounts cleanly on it.
↑It looks really clean now.
Superzero stem. I picked one up.
I'm using it on a bike in the 4kg range, but this stem isn't particularly heavy,
though it's not exactly light either.
Plus, Deda has even lighter stems than this.
The lightest is the Superleggero, then the Zero 100, and after that the Superzero,
but in actual measured weight the Superzero ties for second place.
This stem comes with something called a D-clip, which is a decorative part, not a functional component.
In the "Black" color option, where the stem body is black with gray lettering,
it comes with a red D-clip,
and in the "POB" color option, where the stem body is black with black lettering,
it comes with a black D-clip.
The D-clip is made from a slightly soft material with a tighter radius than the handlebar clamp section,
and snaps onto the handlebar to boost your style factor.
... That's really all it does.
So, why did I buy this stem when I can't really call it a super-lightweight option?
First reason: a separate accessory called the "Di2 Clip" can be mounted on it.
It's mostly the same shape as the D-clip,
but it allows you to mount the top junction for Shimano's electronic shifting components.
Just snapping it in seemed a bit unreliable, so
↑D-clip
↑Di2 Clip
the lower end of the clip catches inside the stem,
and the stem's shape is designed so that as long as the front cap is fixed to the handlebar,
it won't come loose.
Since people will probably ask: I'll mention upfront
that the Di2 Clip is exclusive to the Superzero stem.
It won't work with Deda's other models or other stems.
I snapped it on. Even with the orientation shown in the photo,
there's enough holding power that the top junction doesn't sag from its own weight.
Installed it.
There's a slight wobble left and right,
but it won't come off even if you pull on it.
By the way, Deda's handlebar clamp diameter is typically 31.8mm on most bikes,
but Deda uses 31.7mm, and on some carbon bars it's marked as 31.75mm,
so Deda stems and bars aren't compatible with other manufacturers' products.
So good kids should use Deda with Deda!
Speaking of the front cap in the photo above, regarding its left/right and up/down orientation:
The left/right and up/down orientation instructions are on the back of the front cap.
R = Right means on the right side in the direction of travel,
which in the earlier photo is the side where it says "Superzero."
Even though there's a specified orientation, the manufacturer says there are no performance or safety issues if it's installed left/right reversed or upside down,
but the distributor I bought it from says they want it installed according to the specifications.
At least the distributor I bought from apparently did a 100% inspection before shipping,
but apparently there are units that come out wrong from the factory.
Or it's possible it gets reversed during installation,
so if you're using this stem, you might want to check it once.
Control Tech's Scored 99 stem is also light and nice,
and I thought about mounting just the Deda front cap and maybe modifying the Di2 Clip,
but the screw hole positions didn't line up at all, so it didn't work out.
Got it installed.
（I follow the orientation of the front cap even though it has no functional impact,
but I'm ignoring the handlebar orientation which seems more problematic.）
And the other reason I bought this stem is:
because the side of the stem body is flat, so the Lezyne bike computer's two-sided tape
mounts cleanly on it.
↑It looks really clean now.