The spacers are totally fine, it rubs because there is not enough stack when you compress the headset. You just need to use some shims to add some height to whole stack. I have zero rub on my Time ADHX45 with provided 52mm bearing cover and related spacers, just had to use stock Deda compression ring to have enough height for the headset cover. You will have even less issues on your Btwin since it uses smaller bearing and you can use even round spacers and original bearing top cap.

Thank you! Are you aware if I'd need to replace my top headset bearing and the compression ring? I'm fine with doing so, but I'm cautious about opening up the headset to dig around and check out the hardware underneath the headset cover - don't have a torque wrench on hand yet, so I'm hoping to make this project sort of a one-and-one thing instead of having it sit around in the bike shed.

These bars came on my Seraph bike.

Rate them nightly considering the price they are. I'm 95KG and they have minimal flex.

Thank you for this - I weigh a little less, so I assume they'd be ok, but the area where I live has an annoying number of potholes so it's good to hear that they don't feel too fragile

Hey all, have been a bit of a lurker but decided to join to ask some questions proper. Recently I've been looking at Kocevlo integrated handlebars (specifically, https://www.aliexpress.com/item/1005006561735597.html?spm=a2g0o.productlist.main.13.36045e3dEFnH63&algo_pvid=0e683c72-8a15-4ee0-9d19-865e363905b4&algo_exp_id=0e683c72-8a15-4ee0-9d19-865e363905b4-6&pdp_npi=4%40dis%21GBP%21119.44%2153.95%21%21%211075.08%21485.62%21%40210390c917296377002728725e1c75%2112000037679359616%21sea%21UK%210%21ABX&curPageLogUid=0vZEiUP2JIth&utparam-url=scene%3Asearch%7Cquery_from%3A#nav-review)

I've found limited information here and there so I was hoping this thread would attract all those with experiences to give their two cents - whether about the Kocevlo specifically, or about the other 'brands' of the same bar that bear the same shape (and likely come from the same manufacturer, eg, Hygge (?)).

To be clear, I'm only looking at this purely for fun - I don't race, nor do I do super long rides, but I like the look of the bars and I'm interested in the experience of fitting on new bars. £50 or so is a price I'm willing to swallow for this - if I were going to upgrade a 'proper' bike, I'd go for The One Pro handlebars or something equivalent. My bike (a B'Twin 520) is currently set up with external cables, which I'll route into the handlebars. I'll also be getting a torque wrench to properly torque this down. Not sure if I'll need carbon paste.

Grateful for any thoughts on the Kocevlo's I'm looking at, or Kocevlos in general, or other 'brands' of the same bar - or, if you have experience, tips for installing the bars on myself. Thank you so much!