Ask a Mechanic: How to Install a Rock Shox Reverb Stealth Seat Post

Harrison wants to know, “Can you show me how to install my new Rock Shox Reverb Stealth dropper post?”

Installing an internal seat post can be a daunting task if you’ve never done it before. You can rest easy since there’s not to much to it, and if you take your time you’ll have no problems getting it done. The Rock Shox reverb has been one of the most popular dropper posts to hit the market, and is unique in it’s hydraulic operation, which is intimidating to a lot of people. Fortunately, Rock Shox made it relatively easy to bleed and install, resulting in a reliable seatpost.

The Reverb Stealth has a quick disconnect on the bottom of the post that will prevent any fluid loss when it is disconnected. Use a 9mm open wrench on the lower portion of the black female end and a 6mm wrench on the silver male end attached to the hose. Once you break the connection loose you should be able to simply hold the hose and rotate the black piece to loosen it until the hose disconnects from the body of the post. Before pulling the old post you’ll want to measure and take note of the seat height you would typically run when you are climbing, in other words the highest setting you run your normal post.

Now we can start to route the hose into the seat tube. Fortunately most bikes designed for an internal seat post have a guide to get the hose heading in the right direction. Push the hose through the frame until if comes out of the top of the seat tube. Once you have access to the hose again, reconnect it to the bottom of the post. Once connected, work the post back down into the seat tube making sure that you are pulling slightly on the other end of the hose to pull the slack through the frame as you are pushing the post down into the frame. If you don’t pull the excess hose you can run the risk of it getting bound up inside the seat tube and pinching the hose.

This is where you will be happy you measured your seat height before pulling the old post. Mount your saddle to the reverb and then measure to get the seat back to the height that you will want it when climbing. Once the seat height is set, run the hose along the frame, up to the bars where you will mount the remote. No matter which side you choose this process is the same. I choose to disconnect the hose from the remote at this point by using the same 6mm wrench and turning the silver barb and remote off of the hose. Make sure you are threading the remote off the hose and not the silver barb/banjo bolt out of the black remote.

Once separated, hold the remote up to the bar and decide where to mount it. Then turn the bars 180 degrees, running the hose the long way around and measure to point where you will cut the hose. Leave enough slack to not only move the bars freely, but also to remove the post without having to remove the remote from the bars. Once you have determined hose length, use a hose cutter to cut the hose. If you don’t have a hose cutter you’ll want to use the sharpest thing you have to make a straight, clean cut on the hose.

Now all that’s left to do is reconnect the remote to the hose by screwing the hose back into the silver barb/banjo bolt on the remote, and mount to the handlebar. A lot of people running a 1x set up will choose to buy a post with a right hand remote and then mount it upside down on the left side. This puts the remote in a spot closer to where a shift lever would normally be. Another nice thing about the Reverb is that if you are running any version of Avid trail brakes or new Guide brakes, the clamp for the remote can be used in place of the clamp for the brake lever to further clean up your handlebars.

If you are careful during the process of disconnecting, cutting, and reconnecting the hose you should be able to operate the post without having to bleed it. A quick way to know if you need to bleed the post is to depress the remote and then release it. If after that, you are able to pull back on the remote lever there is some air in the line and the post will need to be bled. If you do need to bleed the post follow the procedure Rock Shox has outlined and you’ll be ready to hit the trail.