Help!! Is my Sestpost long enough?? 🤕

[al-onestare]

That's not ok from my perspective.
I've seen so many aluminium framed bikes broken at the top of the seat tube, often with more insertion than this.
(I've repaired dozens of steel frames, but aluminium ones go in the scrap. )

You'll get away with it if it's a showpiece, but in regular hard riding, the post is flexing the top section and it will fatigue and snap, without a doubt.

In an older alloy frame, id look for a beautiful snug fit and at least a couple of inches below the bottom weld.

Yep, agree. IF this was a steel Kona I'd be more inclined to say you're ok (still with a "take it easy" warning) but with aluminium, it's not recommended.

Great Kula by the way, my fav iteration of that model.

 

[Monkeeee01]

Thanks @al-onestare

 

[brocklanders023]

Might be bucking the trend here but it looks absolutely fine. As a tall bloke who used to squeeze on to 19" retro bikes I've ridden plenty of seat posts at the min line without problem and yours looks miles off to me. Only Syncros I had snapped at the head though so avoid riding in the snow!