Sorry last reply before I order it.
I'm 172cm height, with bikeinsights I compare to my old frame.
Size M seems to fit ?

For T47 bottom bracket, everyone use ZTTO version or there is something else ?

Quote from: ElRey on April 29, 2025, 04:21:02 AM
You might struggle with the upper as it appears to be designed around a 51.8 OD and a bearing height of 8mm not 7mm.

See my post on page 4 re bearing types too, and my experience with the Ritchey ACS headset compatibility.

Why do you need a new headset? Could just replace the bearings?

B

Yes you are right !
I wanted to change the cups too because I find the carbonda ugly but ok I'll keep them and just change the bearings

Quote from: trailgazer on April 28, 2025, 05:26:11 AM
Headset bearings need to be 40 x 52 x 7 mm/45º
I ordered a set of these as spare https://www.kugellager-shop.net/mh-p16-ss-45-45-edelstahl-lenkkopf-kugellager-52x40x7mm.html

Thank you but if I change the whole headset, this 2 parts will work ?

• bottom : https://www.bike-components.de/en/Hope/IS52-40-J-Headset-Bottom-Assembly-p64919/
• upper : https://www.bike-discount.de/en/ritchey-comp-logic-e-cartridge-drop-in-1.5-headset-upper

Hello,

I plan to order a Carbonda 505, I would order a separate headset bearing set.
According to this picture I d'ont understand if I need SHIS IS52/28.6 IS52/39.8 or IS52/28.6 IS52/40 ?

Thank you,