Onirii rotors light

[Stravakiddo]

Has anyone tested this models?
102g for a 160mm rotors seems a deal but I have some doubt regarding heat dissipation and breaking efficiency since

[jonathanf2]

I have them and they work fine, but they don't bite as well on long descents. I found the cheaper, but slightly heavier IIIPRO disc rotors (around 112g for 160mm) to be superior in braking performance at half the price. Also don't get the Kactus disc rotors or disc with horizontal disc grooves. They'll eat into your brake pads!

https://www.aliexpress.us/item/3256808392450745.html

[Stravakiddo]

I have them and they work fine, but they don't bite as well on long descents. I found the cheaper, but slightly heavier IIIPRO disc rotors (around 112g for 160mm) to be superior in braking performance at half the price. Also don't get the Kactus disc rotors or disc with horizontal disc grooves. They'll eat into your brake pads!

https://www.aliexpress.us/item/3256808392450745.html

Yeah I read a lot regarding the IIIPRO ones.
I was looking at something with a particular aesthetics like the chaser brand.
Also regarding the kactus I don't feel secure since I read a lot of bad review on them, somewhere I read that a rotor failed risking injury.

[jonathanf2]

Yeah I read a lot regarding the IIIPRO ones.
I was looking at something with a particular aesthetics like the chaser brand.
Also regarding the kactus I don't feel secure since I read a lot of bad review on them, somewhere I read that a rotor failed risking injury.

Onirii's work fine and look decent, though I did notice some minor oscillation on hard brake descents. Might not be an issue if you don't do much climbing.

The Chaser disc rotors seem decent, but the price-to-weight reduction ratio doesn't seem very good unless you're chasing every gram reduction.

[bichler.bua]

I share Jonathan's experience, the Onirii ones were working but not aggressively good and got worse on longer descents.
I swapped them out against IIIPRO, as well, and they are much better.
Considering the quite high price of the Onirii ones, I would probably favor the much cheaper IIIPRO.

[stalkersk]

For lightweight option, these are really good at braking and with right adapter you are at 100g. Using chaser adapters the weight will go even lower.

https://www.aliexpress.com/item/1005008308211721.html