Searching for very light 650b Carbon Rims

[hund22]

Hello,

Are there still 650b carbon clincher rims in the 250g class? Internal width around 25mm. For gravel riding.

I found some for 29". Unfortunately nothing for 27.5 yet.

Thank you for tips.
Greetings
Marc

[pdlpsher1]

285g. for the flyweight version. I'm using them for both front and rear on my gravel wheelset. The wheelset came out to 1118g. with DT Swiss 240 hubs.

https://www.lightbicycle.com/XC725-asym ... s-mtb.html

[hund22]

thank you, but I already know that. I would like to come out with carbon spokes and extralite hubs at a maximum of 900g. At 29" it is already possible. Then it should be even easier with smaller rims and shorter spokes.

[pdlpsher1]

The only way to save some weight is to go narrower. 270g in flyweight version.

https://www.lightbicycle.com/XC-650B-mo ... tible.html

[Jasonlelam]

thank you, but I already know that. I would like to come out with carbon spokes and extralite hubs at a maximum of 900g. At 29" it is already possible. Then it should be even easier with smaller rims and shorter spokes.

For gravel or tougher routes, carbon spokes would not be a good idea IMO. For <1000g gravel wheelset, Light Bicycle rim + extralite hub + Berd rope spokes is a way out. Drop LB for a simple ask.