I have a spare Thomson Inline seatpost - £30
I also have some very nice PRO VIBE carbon bars in the that size. Thread here
EDIT: the bars are 40cm but I have some cheap ones in the attic!
As for the gumwalls / Amber wall, the cheapest option is Schwalbe Delta Cruisers or Road Cruiser ? Or Planet X: https://www.planetx.co.uk/i/q/TYPAJBG/jack-brown-green-folding-tyre
And if you consider non gumwall, I have ridden those and love them: https://www.planetx.co.uk/i/q/TYVITRAILTECH/vittoria-trail-tech-g-rigid-tyre
I'll take the seatpost! Carbon bars are a bit over kill for the build.
@Jules started
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I have a spare Thomson Inline seatpost - £30
I also have some very nice PRO VIBE carbon bars in the that size.
Thread here
EDIT: the bars are 40cm but I have some cheap ones in the attic!
As for the gumwalls / Amber wall, the cheapest option is Schwalbe Delta Cruisers or Road Cruiser ?
Or Planet X:
https://www.planetx.co.uk/i/q/TYPAJBG/jack-brown-green-folding-tyre
And if you consider non gumwall, I have ridden those and love them:
https://www.planetx.co.uk/i/q/TYVITRAILTECH/vittoria-trail-tech-g-rigid-tyre