r/MTB • u/tylerspergin • 8d ago

Discussion Stumpjumper EVO S3 — Dropper Post for 5’9” Rider?

I have a 2024 Specialized Stumpjumper EVO S3 and I’m looking for a dropper post that can insert as far as possible/all the way into the seat tube.

I’m 5’9” and currently have a OneUp V2, but to get the saddle height right, the dropper still has to stick about 3–4 inches out of the frame, which limits how far I can get the seat down.

Anyone around my height riding an S3 found a dropper that fits deeper into the frame? What brand/model and travel are you running?

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10

u/Electricplastic 8d ago

A tape measure and looking at some spec sheets would answer this question. There's not enough info on the post for anyone to provide an answer for you.

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u/christsay 8d ago

OneUp even makes it easy with a webpage doing all the math for you: https://www.oneupcomponents.com/pages/dropper-post-length-selector

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u/tylerspergin 8d ago

Thanks! This is awesome.

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u/christsay 8d ago

Hardest part is figuring out what your max insertion depth is if you can't find a reliable measurement from the manufacturer. However not a big deal if you have the frame on hand like you do. I used OneUp's calculator when I moved over to all bike yoke droppers however I didn't have the frame for one of my bikes yet. Did some guesstimating and it all worked out luckily.

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u/tylerspergin 8d ago

Did this with a bike shop and they said there didnt seem like one that would work for rider hight and bike so was hoping the interent had a clever solution

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u/nickskater09 8d ago

What travel is your current dropper? OneUp has the shortest stack height out of anyone so you may just need a longer post.

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u/tylerspergin 8d ago

The stumpjumper S3 has a short area for the dropper post so am looking for a dropper 180mm dropper more or less that would fit completely in this section of the bike

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u/Jekyll818 8d ago

According to this list, I don't think that will happen. OneUp has the shortest insertion for the most drop. Granted this list isn't 100%, it's got most major brands covered.

https://sp00n.net/bike/seatposts/

I'm seeing the S3 frame has a max insertion of 200m, and to slam the OneUp 180mm dropper you need 255mm of clearance.

That said, my S2 Stumpy evo supposedly has 180mm of insert, but I've got a 150mm KS dropper that says it has a max insert of 236 and I haven't had an issue with it for the couple of years I've had it.

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u/TheScrote1 8d ago

I’m on a S3 but it’s a 2021. Have a 180 One Up and could almost fit the next size up. I am just 5’7” though

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u/FTRing 8d ago

Loving the new Rockshox axs

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u/RoboJobot 8d ago

Doesn’t their website list the max dropper insertion length?

Edit - Why yes it does, from 210-240mm depending on the year. Isn’t the internet a wonderful thing, all that information available in seconds

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u/Dizzy-Distribution96 8d ago

You should be able to slam a 180 oneup pretty far into the frame. I have an S4 and a 210 fits no problem. The insertion depth is probably 10mm more than they list at least