Dropper Posts | How To Choose The Right Size (Step By Step Guide)

[@prancisfena]

Ace Ventura wallpaper. Very nice.

[@WorldwideCyclery]

Francis Peña yeah! Any recommendations for the wallpaper in our next video?

[@prancisfena]

Worldwide Cyclery it's a toss up between Dr. Evil or the Anchorman himself, Ron Burgundy 😂😂😂

[@Allyosha]

@@WorldwideCyclery Chapulín Colorado!

[@adammeade1428]

Lol. Yeah. I love that they always use movie references I know. Billy Madison, for example. Must be a bunch of 30's-ish cats around there. Salute!

[@LifebyBertie]

Great vid and real good info, I am lucky enough that my 150mm KS Lev fits greatly in my NS Eccentric Cromo HT, it's a large size frame and the collar slams all the way down on top of the seat-clamp. With my 6.0 ft it fits me great when peddling uphill and slams down all the way going DH and shredding the trails.

[@-JonathanDeBruyne-]

My bike came with a 125mm fox transfer so I think I'm already set but I still watched the whole video.

[@Andrew.Drennan]

this is oddly well timed with my e-mails with dropper questions yesterday haha

[@Andrew.Drennan]

also why is max insertion not a more common dimension to show on frame geometry diagrams?

[@WorldwideCyclery]

Great question but not sure why it isn't more common :/

[@Xgecko66]

It was on my Transition Patrol....I did a lot of measuring and comparison shopping before I bought my dropper post

[@sonoman00ify]

BMG Two Stroke. Bought RainierGen 3 125mm. Large frame 6'-0" tall. I think a lot of people buy these droppers too big.

[@allenjanes5976]

I'm using a reverb. It wasn't hard to figure out because I made my local bike shop do it

[@WorldwideCyclery]

More people should trust their local mechanics! :)

[@mltron]

I just bought my first MTB recently. I’m 6’0” and the size guidelines put me right in the middle of two frame sizes: 42cm and 47cm. I read the guidelines saying to size down for faster handling and that’s what I did. However, in order to achieve proper saddle height I need to position the seat post way too far out of the seat tube based on the minimum insertion line on the seat post. The seat post is so high that the minimum insertion line on the seat post is about an inch and a half above the top of the seat tube. Really felt like I was risking it. I reached out to Bikes Direct about it and showed them a picture. I was told riding it like that would void the warranty and could break the seat tube. Was also told I can’t return or exchange the bike because I no longer have the original box to ship it back in. I was also told they don’t have any different dropper post lengths. The bike is overall great so far but I’ve not been very enthused about this experience with the dropper post. So I am hoping there is a dropper post that can sit in the seat tube deep enough to be safe but also extend high enough for me to pedal comfortably. Thanks to this video I have a starting point and at least it seems like there’s hope for me now. Anyone have any suggestions or similar experiences?

[@bobcat5496]

JEEEEEFFFFFFFFFFFFF!!!! YOU CAME BACK!!! I KNEW YOU WOULD!!!!!!!

[@KDub3911]

You also have to take suspension sag into account. Also don't forget about droppers with adjustable drop. If you get a 170 but it's too much, reduce the travel until it's right. One-up and PNW offer this feature.

[@zmndrf]

How do you adjust travel? And if I got a 170 am I able to reduce it to a 150? I'm new to this, thanks in advance!

[@KDub3911]

@@zmndrf certain models have adjustable travel. You can buy a little travel adjuster that slips into the inside of the dropper to make it stop short of it's regular top out point. Some are incremental and others are fully customizable to the exact mm where you cut your own size for exactly what you need.

[@supermansr44]

your videos lead me to purchase the Fox Transfer for my Trek Fuel EX8. Thanks and keep up the very informative videos.

[@WorldwideCyclery]

Thanks and will do!

[@The11eleven]

What size is your frame, and what size(travel) did you go with on your dropper post? I have a 18.5” frame and the post that came with the bike has too much travel, at 125mm, after fully inserted for me

[@motorcycleguy73]

On my Specialized Stumpjumper the stock dropper post his bottomed out in the frame and with the seat tube extended it's perfect height what luck if I was any shorter it wouldn't have fit me and I am 5'9 with 32 inseam.

[@Jurica-mtb]

Same here on Enduro 2017.

[@nickwatkins5227]

Great and simple guide explained keep up the great work.

[@mattmccluskey6857]

This is some great information. Thanks!

[@MrAddison]

I dont havet any dropper post. But i Think that i want One for My hardtail.

[@eddiesforktour4394]

Hello my wife just got a 2021 Giant Stance I'm looking for a dropper post for her. The bike frame is XS she's about 4'11-5ft tall. Do you guys have an idea of what post I can get her?? Thx

[@soulbruva3000]

Buy a mtb model that doesnt come with a dropper seatpost (eg. Trek fuel ex 5). Then look for the same frame-sized model as the one you bought but with higher specs including dropper seat post (eg. Trek fuel ex 8) and check out the measurements for the dropper seat post. Then you can know what measurements you need for your specific model.

[@VikingRasbornStrong]

awesome info. always entertaining. i have 2 mtb. 1st is a 2018 Trek Fuel ex8 plus with not stock 120mm dropper... seems short and limited for it's insertion is too long and not tall enough extended? my new Trance x2 has a quality 170mm all way down seat tube. fantastic range and drops lower than my Trek? QUESTION.. looking at Oneup dropper 150 to 180 to get better range on Fuel? what do i need to check? thanks

[@bob4q]

Thanks, 2019 - 30.9/125mm Crankbrothers highline 3 on my 2014 Rocky Mountain Altitude.

[@codyclark2471]

thanks for info ,,I,m riding a framed wolftrax fat bike 22 1/4 inches seat rail to middle of the crank 565.5mm i think , and 5 inches or 127mm seat rail to top of seat tube....can I run a 100mm dropper post ? or is there a shorter one iI can use..Thank You for your time it very much appreciated!

[@plutoplatters]

I'm thinkin a dropper post cost more than the whole bike did a few decades back ?

[@WorldwideCyclery]

Some bikes for sure, pretty crazy!

[@CartelMTB]

Great info/video! I wonder if I can fit a 150mm on my SB5? I have a 125mm transfer but the collar isn’t slammed

[@WorldwideCyclery]

Depending on the bike sizing you should be able to, you can send us an email at [e-mail] for more information if needed :)

[@efrenmendoza8532]

Hey wwc dudes Question i have an evil 2019 S size and I'm thinking of getting a M frame for my next purchase Who makes a dropper post that has the outer tube (where the frame of the bike clamps on) shorter as right now my bike has a 30.9 125mm but I want to buy a 30.9 150mm travel but I want to b able to stick it in as far as possible so I can use it for my small frame as well as the M frame Without it sticking too far out and getting in the way when I squat down for the steep downhills Thank you always great videos guys

[@PanaceaTV]

Hi! I need a dropper post for my uncle’s bike, he has a 2018 Scott Spark 740, it has internal routing for the dropper? Would you recommend oneor two options? Thanks in advance. I really like tour channel! Congrats!

[@Xgecko66]

I have a 170mm PNW Rainer on my lrg 2017 Transition Patrol....I wanted the most amount of drop I could get....thankfully both Transition and PNW have all the relevant data on their website. I used almost every bit of space in seat tube for the seat height I needed (like maybe 2-5mm).

[@dannyfla27]

I have a Trek Fuel EX 8 w/100mm Bontranger Drop Line maybe I could have gone 125mm

[@caronfuller2315]

hi, I recently purchased an older Reverb with a 125mm travel but now I've seen a preowned newer version Reverb with 175cm travel (total length 467) that I'm keen on as it has new lever etc. I have a Focus e-mtbike with max insertion 265mm; rider height 255. I've done the calculations using the Rockshox PDF instructions and it might fit but yes it's complicated. with an e bike there's the charging port to think about right there where the hose barb needs to route. I've allowed the 52mm but I just need help.

[@timothykwok1149]

Hi i was just wondering if seatpost shims are bad for the bikes? Since I got a new bike with a 34.9mm diameter and I really want to put a Fox Transfer Factory on it which only have 30.9/31.6mm.

[@philippelanteigne5352]

Thanks guys! Another great vid

[@WorldwideCyclery]

Philippe Lanteigne thanks for the kind words! Any recommendations for us on the next video you want to see us make?

[@philippelanteigne5352]

Worldwide Cyclery how to choose a saddle! The best way is to try them i know but in the real world it's kind a hard to do. So there must be some guidelines to follow when it comes time to choose a saddle and i don't see much info on that over youtube. Maybe handlebar, diameter, length, rise ect..or even shifter, easy to get a better feeling transmission by upgrading shifters. Anyway cheers guys and keep up the good work.🤘

[@nunomaher]

I need help finding a Dropper that will work for me. I have a 2014 Nukeproof Pulse and the Max insertion is only 147mm. On top of that I'm a short rider at 5'4". The measure from seat collar to seat frame is 178mm. Any suggestions would be appreciated. I'm currently looking at Brand X ascend CX 85mm of travel. Thanks in advance.

[@175thStreet]

Great video! This shit is confusing. Cool to have this video, nice work!

[@aidandevlin2535]

The diameter of my seatpost on my bike is 29.8mm . What would be my best size option when choosing a dropper . Thanks

[@johnrvt]

I have 254mm max insertion on my MTB; a 228 max extension, so I calculate my minimum total length at 482 mm, so I would need a dropper no longer in total length than that? I am looking at PNW droppers and between a 150 travel or 170. Which would be better fit?

[@pascualaguon5324]

Hi.. just getting into MTBikin.. I have 2021Giant Stance 2 and want to put a dropper post my stance is a 27.5 Medium frame .. any suggestion, I know I need a 30.9 post diameter ... but depth is my problem .. there is slight bend towards my rear shock..

[@jonathonnitz8630]

Will I be able to run a 175mm dropper post on my large trek pro caliber 9.5 frame ? Please any help is appreciated

[@metafortis5147]

I got a 150mm Fox Transfer Performance Dropper Post with my 2018 Scott Genius Large. I need a 125mm as the 150mm is too long. I suppose I'm right on the cusp of a Large to Medium Frame. Anyway, what's the best way to trade this 150mm for a shorter one?

[@backyardtrails]

T-ta-ta-today Junior! haha good edit 😅

[@jeradsantiago4490]

I bought a YT Capra size Large 2021. But it seems like the dropper is to high for me because I’m 5’8. Is there any chance I can lower it down?

[@rodneydominguez2734]

Hey dudes, I'm looking at a Rockshox Reverb dropper post but I'm not liking the weird lever thingy it comes with, can I replace it with a Wolf Tooth or any other lever?

[@MiguelCampo-co6ms]

Hi! I've got a 2018 Yeti sb6, and i would like to know if a 150 or 170 mm travel will adjust into the frame. I'm looking for a lower seatpost position during the descent. Thanks! ;)

[@OryxAnAngryBoi]

Mr Longlegs over here is runnin a 185mm Bike Yoke Revive on a Large Sentinel. Works perfect and easy has enough insertion for the correct saddle height.

[@Standupnfall]

Any experience with Trek Remedy 9 2014 and V1 Highline 160mm? I have 9" of max insertion depth. I am 6 feet tall and my measurements are coming up really tight for the 160mm.

[@janmartingonzales8816]

hey there, i’m planning to buy a fox transfer. my stack height for my current seatpost is about 185mm so i can have at most 185-50=135 travel. but following Fox instructions for choosing fox transfer posts, it turns out that a 100mm is best for me. Unfortunately, 100mm travel is not available around our area. So i plan on having a 125mm post. What can you say about it?will this be ok?

[@paulmcdaniel9487]

Can anyone answer this generally? I'm 5'-9", but with a longer than typical inseam of 34". I recently ordered an online mountain bike in size large. Would a 120 or 150 dropper be better?

[@stuckingray6132]

My ussue is the opposite. On my bike there is only 5 inches of insertion space so if I out a shorter travel post it will only have a small amount tontravel which defests the purpose. I want my seat ALL the way down so I can go down extreme angles. Ifnit only goes halfway up then its junk to me

[@rc70]

Thanks for the info, what about other number such 31,6x430mm or 31,6x380mm followed by travel (150 or 170mm)? (430 or 380 mm ??)

[@TrailBreaker]

That’s the overall length from where seat rails are to the bottom that goes into the frame

[@clintontopp898]

You didnt talk about stack height which can very be different by 50mm

[@khanjones9390]

Hi I would reeeaally appreciate some help because I think the ‘Fox transfer sizing guide’ is actually wrong! In step 1 of their guide they tell you to measure your preferred seat height from saddle to where it goes into the frame. And in a chart it then told me that at my preferred height of 190mm could ONLY work with a 100mm dropper because of that measurement! I’ve got plenty of insertion room and would much rather a 150mm dropper. Is there any reason I would actually have to go for the shorter post because of my 190mm preference?

[@andyphillps4533]

I am looking to buy a new dropper post but was wondering if I needed to buy new Cable and housing or can I use the old one that’s on my bike already?

[@WorldwideCyclery]

I totally suggest getting a new cable and housing at the same time. It is cheap and worth it so you're not finagling with an old cable. But best of all, I think almost every dropper post sold includes the cable and housing with it.

[@andyphillps4533]

Thank you , and do you now if the fox transfer does come with the housing and cable ?

[@WorldwideCyclery]

Fox actually sells their with the remote. The remote and post are sold separately. Check it here - www.worldwidecyclery.com/collections/fox/dropper-seatpost-remote

[@andyphillps4533]

Awesome thank you so much!

[@nickpurdy]

Do you have to ride with the dropper fully extended? Would the post break if I only ever raised it to 80-90% of it's full extension? My bike has a really short seat tube and I have incredibly short legs/inseam. I need a dropper post so I can get on the bike from a standstill and then be able to raise it to riding height.

[@WorldwideCyclery]

It should be okay running at 80-90% but would be ideal if you can find one that can be fully extended to your pedalling position that would be ideal so it is always where you want it instead of messing with it every time you raise it.

[@darkmanx2g]

Do we need to change the stem to find a post our size when fully extended? I'm the same situation. Only needs 80% extended I always have to adjust manually to get the right height.

[@kevinhiggenbottom8339]

Does the T pose have to be up higher or lower to does a handlebars has to be up more or or leave it like it is if it's to the frame is when I ride I kind of lean over a little bit and I don't like it I want to link up more. I can see you look in front of me not look at the tire when I'm riding good question

[@brynnerbernabe9538]

Hi sir I'm planning to buy dropper post which size is fit for me, my mtb Marlin 5 trek frame size 18.5 and my height 170cm please help me which dropper post fit for me thank u

[@mtbmt6908]

Would a 125mm be best for my 2018 Trek Fuel? I'm on a vacation right now so I cant really measure it myself. Thank you!

[@lornegraham5098]

depends on your height

[@mtbmt6908]

@@lornegraham5098 I've put a 125mm on it and it fits perfect!

[@Cous1nJack]

Another meeting that could have been an email

[@HeyBob-O]

I thought this was a step by step video. Guess I’ll have to keep searching for a video that explains the whole process.

[@tokuchaan4693]

Obviously longer the better, that's what she said😂

[@Andrew.Drennan]

just keep her nice and lubed up!

[@WorldwideCyclery]

Baahaha

[@mtbninja897]

Ya it would be awesome if you could just measure your inseam and then look at a chart that shows which droppers would work for the frame you are considering. I ordered a medium Following MB and a bike yoke revive 160. I pretty much guessed. Fingers are crossed

[@paulmc5412]

Question for anyone: i’ve recently ordered a new bike online that will accommodate a 120 or 150 dropper. I am 5‘9“, and have a 34 inch inseam measurement, so my leg extension is seems more than would be typical for most people that are 5’-9”. I’ve ordered a large frame size because I am looking for more stability in the bike rather than the ability to whip it around. Any recommendations on whether a 120 or 150 dropper might be better given my measurements?

[@bullseye0112]

So when the post extends to maximum height from dropped, is it the same length for 125mm and 170mm. I have a 150mm and need to raise my seat post up to get the right climb position, but wish it would drop lower when going down hill.

[@OryxAnAngryBoi]

Na man, to actually fit each different drop measurement the post part will vary in length and hence the overall length will also vary. More drop = longer

[@WorldwideCyclery]

Correct :)

[@fernandokikuthi8274]

Thanks for the video! Could you tell me which dropper post would fit in a kona entourage 2013 size s? I'm around 1,72 m

[@antonyhawkridge3237]

29r fuji, 28 leg What size would you recommend for trails and rough stuff

[@motocarlo81]

So do you measure the original seat post diameter or the frame tube diameter to get the size?

[@Velo1010]

If you are anything like me I don’t want any cables showing so I would opt for the wireless droppers. The prices have come way down since this video posted.

[@benread1485]

What dropper would I put on a trek marlin 6 please . New to all this

[@go4jay29]

Nice Vid 👍 - Can a Yeti SB 5.5 size XL accommodate a RockShox 170mm dropper?

[@WorldwideCyclery]

It should but I recommend taking the measurements as outlined in the video before making the purchase. You can email us at [e-mail] for more details!

[@onetyme6032]

Race Face Turbine Dropper Seatpost thoughts on this post?

[@dickysamad]

Question.. my seat tube length is 459mm. Can i use a 509mm dropper post with a 175mm drop..

[@TrailBreaker]

Depends. That seat tube number is a straight line measurement from the BB to the seat post clamp. Your actual seat tube will have a bend partway down which will limit how far the dropper will insert. Use your seat tube or similar size thing (broom handle) and measure how far it goes in before it bottoms out

[@LarryRichelli]

Why can't they give the measurement from the extended to the dropped level. My post goes all the way down in the bike and extended is about an inch too high. I know I will have to but another one but I don't know my post total length without taking the post out and I don't know how to do that. Bummer. I have a canyon Dude carbon fat bike size large 30.9.

[@mattfromtinder1055]

No Pam?!? And to think I don’t even have a dropper post and watched it all the way to the end. Blasphemy sir! Blasphemy! Wait wrong word err... poppycock!

[@Aura-Of-Syrinx]

I literally can't figure out if I can even fit one on my 2017 Kona Operator (Large Frame)

[@stuckingray6132]

Hey dude. I have a Giant Stance. My seat post tube only allows 6 inches of "insertion." I want my sest to not only go high enough for efficient climbing and street peddaling but I also need it to go all rhe way down. does anyone make a post that can accommodate this range eith only 6 inches to work with? My max height is 11" from seat clamp to seat rails. I dont see how I can get this range.

[@Herecomeoleflattop]

Coincidence! I just bought a Stance a couple weeks ago and decided to get a dropper added. I'm told by "the shop" that 4inches is good. Then again, I'm not hard core, basically at experienced beginner level. But it's better than no dropper!

[@jayprestt1418]

hey, currently running a 2017 yeti sb 5.5 and thinking about running a bike yoke revive 185mm dropper. do you know what the maximum insertion is into the seat tube on that frame? i have made some measurements and think it will fit as im a tall guy but i don't trust my measurements.

[@jayprestt1418]

I also forgot to mention its an XL frame

[@WorldwideCyclery]

Send us an email at [e-mail] and we can help you out :)

[@doctajuice]

I'm actually really worried that when I get a dropper it won't be able to slam low enough. I ride a hard tail so I have an advantage on seat tube length but I come from a bmx background so when I want my seat down I want it totally nonexistent.

[@WorldwideCyclery]

I think you should be ok with a shorter length dropper, if you want to send us an email at [e-mail] with your bike measurements we can help you out!

[@jakenoland25]

Can you put one on a slope style bike

[@shawnp8429]

Awesome thank you

[@David-np4vo]

I'm running a 150mm but really needs a 125mm hopefully my reverb will be on my girl by Wednesday Yep 150mm 😃

[@raymondmartens7803]

This is an old post but maybe someone will see my question....has anyone used a dropper with a 2X front gear i want to just not sure where to install the thumb control

[@TrailBreaker]

Word tooth and PNW make good levers that might clear the shifters. Or, you may need to just mount it inside and reach farther to get it to work

[@kaywoodparsons1874]

You really didn't show how-to. Do I measure the inside of the frame tube, do I measure the seat post, do i measure the external fram tube etc...????

[@johnf3326]

Can you ride with a dropper partially up?

[@dlastmohican71]

Definitely

[@likeris2]

I got reign advanced 1 (2015) s size frame. I got rock shock 125mm droper and it is a little bit too small. I am 177cm or 5'10 tall guy. can I fit on my bike 170mm droper? I want rock shok again. no Idea what size all unit is? cose now I am lift post up limits.

[@WorldwideCyclery]

I doubt that you will be able to make a 170mm work. If you are on a Small frame you should be looking for a bigger bike, not just a bigger dropper. :)

[@likeris2]

my bike size is perfect :)

[@jaakko200987654321]

dammit... my dropper (KS eten) is too short for my size... now i have to buy a new dropper... also it has little side to side play ans when you pit the seat all the way down the seat clamp touches/pinches the seal

[@David-np4vo]

If your insert is on the maxium height level and fully extend slight bend on knee or fully straight on heel yes you do..

[@justingillette8287]

I almost bought a trek roscoe 7 with a factory dropper but after sizing it up for me as I’m 5’7” a medium size bike is what they recommend but at lowest setting the seat height is like 1.5” too high. Back to square one...

[@tzaidi2349]

Aaaaaalll righty then.

[@doctajuice]

Seinfeld?

[@WorldwideCyclery]

Yup!

[@RCKING1]

My dropper is 200mm

[@maxwarre]

You didn't explain shit actually, you just said it's complicated and linked to a link :-)

[@blessedfpv7357]

That is by far the sexiest bike ever... 🤤

[@richardmorris8764]

Hahahahahahaha, insertion depth

[@loganammon5087]

Dropper seatpost are dumb all about the rigid ones

[@MacauGr]

Step one... try to filtet diameter size! And you will see what is motr commom size... omg.. are you proffesionals or?

[@janmartingonzales8816]

hey there, i’m planning to buy a fox transfer. my stack height for my current seatpost is about 185mm so i can have at most 185-50=135 travel. but following Fox instructions for choosing fox transfer posts, it turns out that a 100mm is best for me. Unfortunately, 100mm travel is not available around our area. So i plan on having a 125mm post. What can you say about it?will this be ok?

[@janmartingonzales8816]

hey there, i’m planning to buy a fox transfer. my stack height for my current seatpost is about 185mm so i can have at most 185-50=135 travel. but following Fox instructions for choosing fox transfer posts, it turns out that a 100mm is best for me. Unfortunately, 100mm travel is not available around our area. So i plan on having a 125mm post. What can you say about it?will this be ok?

[@WorldwideCyclery]

If the post is too long for you it will be really uncomfortable :( I would recommend ordering one that is the correct size. We carry a number of posts that are 100mm and we ship worldwide.