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Previous wheels had 23 front 25 back GP4000s and it fit well, just not as light!
No doubt i’ll be back on them if the Veloflex puncture regularly.Thinking about a toupe/romin shaped carbon eBay saddle, they appear to be around £15, worth a punt?
Also looking at a inline seatpost, should be able to get it sub 100g as I don’t need much seatpost exposed.
A lighter handlebar and brakeset are also welcome, as it looks like i’ll have to do a little bit more work than expected to get it under 6kg
I know it's heavier ... but don't you want a 25mm tyre on the back? It should fit.
Trimming the seatpost will help a fair bit.