ROCKSHOX Reverb Stealth MTB Dropper seat post Rebuild. Squishy seatpost sag fix 

These Rock Shox Reverb rebuild videos are all the convincing I need to throw my Reverb away and buy a new one from a different manufacturer!

Thanks. Just rebuilt my reverb whilst watching this, then bled the remote. Whole system works perfectly first time. Absolutely over the moon as someone gave me this for free as it didn't work. Got thoroughly covered in oil though as I wasn't quite prepared for how much air was trapped behind the bottom seal. Still cleaning my bench 🤣

Wow. That is a pretty complicated process. I do all the maintenance on my suspension but after seeing this I’ll pass on my seat post. Great job on the rebuild 👍

Just got it done tonight works a treat thanks again from down under . I,m kinda glad people hate on these posts as both that i have on two bikes cost me nothing apart from oil grease and 100 pairs of nitrile gloves oh and some time .

Great video - very thorough and covers everything you need to know 👍

Sehr gutes Video! Meine reverb Sattelstütze funktioniert wieder einwandfrei.😊

Your channel is so underrated. Thanks for the tutorial. I believe this is a $300 service at a (competent) bike shop, and deservedly so as it is time consuming. Thanks for all the home mechanic level tips and hacks. Many cycling RU-vidrs have graduated to full Park Tool sponsorships that leave us home mechanics not able to follow their tutorials because we don't have some special tool. Like many great home cooking channels that deliberately not use fancy kitchen gadgets to make food, I hope you remember the budget home mechanic when you graduate to the big blue tool sponsorship

Fantastic video. For those without a vice or strap wrench - you can slacken the outer collar before removing the seatpost from the frame. The black hose fitting which connects to the post needs an 8mm spanner, the poppet valve is a 10mm and the poppet valve housing is an 11mm.

Don't have a Reverb anymore but it's such a great video that I watched it and subscribed anyway.

Never seen such a simple but great video to this topic 🙏

I've rebuilt motorcycle forks in a similar fashion so finding this video I pulled the trigger on a $40 purchase on a used reverb with the squish. I'll be diving in as soon as it arrives .

Makes we want a different dropper. I’d rather rebuild an engine lol. Good work

I just rebuilt mine (stealth B1) for the 4th time after the squish developed (usually takes about a year of riding). This time there was some air trapped in there (this had never happened before) that wasn't released via the air valve, so the poppet valve housing removal needs to be very slow and careful otherwise the poppet valve and housing will shoot out of it, which mine did (undamaged somehow). This also caused the IFP to shoot to the top of upper post head so I had to find out how to remove that (there is an easy way via plugging the ifp tube holes and pressurizing to 25 to 50 psi). There is an easier way to remove the IFP, just use the poppet valve (opposite to it's normal orientation) to get behind it and pull up on it but be careful as you obviously don't want to bend it. The fact ROCKSHOX didn't design and include an IFP removal tool is pretty dumb. Zip ties? lol. After having rebuilt my fork damper and air spring, and regularly disassembling and regreasing my rear air shock, I can say that this system is more complicated than anything biking related I have ever worked on and is needlessly over-engineered and over-complicated for the application. The only reason I keep it around is because I know how how to rebuild it quickly and it is pretty cheap (~$25 for the rebuild kit) so I have no riding downtime. Very clear and informative video, I'll probably use this as a reference next time instead of the manual =)

Great step-by-step. My 1 inch squish turned into 1.5 in the first 2 rides this year. Yesterday I took it apart via sram's how to but didn't remove the "pop it" cap and valve the first time and it buggered the end result. Also sram doesn't mention or show how far the piston sits in the upper tube so I didn't know where to measure the home made suction device's depth from. Thanks for this video. I was about to wait for my lbs to do it cuz I didn't know where I went wrong but your video showed all the steps I needed to sort myself out with. Have a good one!

Excellent video. Thanks Trail Breaker.

Man good job a lot of detail in a reverb.

That fact that this is a $600 dropper spec’ed on bikes and you can always find dozens for sale for $50 days it’s all. Now watch the OneUp maintenance video and see what not screwing over your customer looks like.

Great video! very well made and great instruction.

Great tutorial! Will be rebuilding my dropper post soon. Thanks for the clear & concise guide : ) Sub'd

Thanks for the video! Really helpful. My internal seal head bushing coating had come off probably the cause of a few issues. When put my ifp back it I found it useful to relieve some pressure from the Schrader valve(I could have removed it)

Thanks for this video man , it helped me a lot to service myself rockshox reverb 430 mm 😉❤

Nice work🤘

I bought a bike with a 2 year old reverb and it suddenly stopped working. I didn't realized I'd need an advanced engineering degree to get it going again. I'm replacing it with a cartridge style post. Good video though.

That sucks that happened to you! But at least you got it fixed and made a nice video to help other people with theirs!

I have the new reverb stealth with the air vent bleed. It allows you to skip all of this…thanks GOD! Amazing vid for when I need that eventual service though!

This dude is a fucking LEGEND! got my post sorted first try. Thanks dude!

Great video. In trouble shooting all Reverb Dropper Post issues, it would be good to understand how the main body works. Would you be able to make a video on how it works. Explaining how the air pressure, pistons, chambers, fluid movement and levels, etc. The SRAM service manual has a great diagram to use.

I’ve been using bel ray 2.5wt suspension oil as my reverb fluid. Seems to work identical to the Rockshox stuff. Love how reverbs can be rebuilt and renewed for a few dollars in oil.

I totally appreciate your video, as I'm looking to do this on a 1 year old reverb that got hydraulic bypass, while I improperly vented it. I'm so frustrated that the design is so complicated, and a simple mistake in venting can render my entire bike unrideable. I'm tempted on just getting a different seat post and not dealing with this.

Thanks for taking the time to do this ive done rebuilds on the pre stealth post a couple of times , this was a 150mm travel post and you set the piston at 50mm and the suck out 192 mm correct ? One trick is rather than the strap wrench i undo the top cap while still in the bike a turn or so , thanks again will much less painfull than the rs girl ha ha .

How much reverb fluid is needed? Awesome video, I will try to fix it too.

Great video. I recently cracked my frame, so I'll be swapping all the parts over to the new frame next week. Any hints for not getting air into the system? Post is relatively new (only used for a month or so). Thanks again for the video.

Great skills, thanks for the video! How would gauge how bad is the problem is? my ROCKSHOX Reverb Stealth MTB Dropper seat post wouldn't hold my weight, upper-post lands on the lower-post vertically. In this situation will it salvage by complete make over or should I go for new one? please comment, appreciate your advice.

by 5:50 I've decided it's just going in the trash. I'm not doing this again in 30hrs.

Great video! It's possible to know what type of grease are you using in this video? I'm not interested in the particular grease brand, also because I'm from Italy... Thank you for your tutorial

One suggestion... the diy oil height tube needs to be perfectly straight and rigid if possible to he accurate. Even 1mm off can leave sag still. Your had a curve...though this would mean you took out Less oil which is better than taking too much. Too much = air inside = will still sag. The oil height and ifp heights are so so super critical

hello, your video helped me a little, but there seems to be an error when you install the internal box. Lots of lubrication is needed to keep air out of the pocket.

Mine feels a bit rough when I use it. Don't know if this calls for a rebuild or not, but great video!

What isopropyl spray is that? Awesome vid.I buggered my first attempt..so many crucial steps were missed following srams vids..garbage. thanks! Update: rebuilt today..smooth as butter..scuffed the aluminum lock nuts, but thats normal as I feel like this will be a normal yearly service. Tip: i drilled a 3/8 inch hole between 2 blocks of wood to hold the inner shaft assembly.

My reverb won't stay down consistently. Sneaks up on me at the worst times! Any idea how I can fix this?

You forgot the last step...throw it in the waste bin and buy a PNW. 🤣

This is the 3rd video I've watched today on servicing the Rockshox Reverb. They all made it look more complicated than doing a full service on my Fox fork. I have a Reverb with the annoying squish. My sense is that it's just a bad design by Rockshox, and I'm thinking I'll switch to the Fox Transfer Post. Anyone have any experience with it, to compare to the Reverb?

Why not use the vent tool on the vent below the seat?

How do you know/measure dropper post travel?

Did the sag ever return?

how much oil do you need to refill

What kind of vise are you using at 5:27 in the video? The yellow vice jaws?

Lmao what a pain in the ass, props to you

The rebuilding of the dropper was 100 % , but you wrong by using old seals which i ( service kit) , secondly in I.F.P, pipe in future don,t apply grease remember that going internal which is reverb oil so if they mix what next/ its creating the dirty, Sram butter only on air seal,

Pump it up to 250 psi ?

I've got one of these in the workshop presently. The customer is actually missing their IFP. Go figure...

Would you be willing to give mine this treatment?

It’s look like, bike mechanic will charge me more than the price of a new one.😢

Just wearing a rolex while working on bikes like it's nothing.

So basically... buy a new dropper. I can't imagine a shop charging less for this job than what a new dropper costs new.

Seriously? This problem should have resulted in a class action lawsuit against RockShox. $80+ for the rebuild kit which should instead be given to all owners in compensation. Mine is going in the bin.

I appreciate you putting this together, but let's be honest here, these posts are absolute garbage.

Jeez this is too complicated.