This adjustable height seat post allows for micro

This adjustable height seat post allows for micro-adjustments
using a remote handlebar mounted lever. The cable actuated
lever plus your body weight allow the rider to adjust the height of
their saddle without needing to dismount and lower the seat post
manually, like traditional non-adjustable seat posts. Please read
these instructions thoroughly before attempting to install
the adjustable height seat post or handlebar mounted lever.
Please keep this manual for further reference and if you have
questions, please contact us at
Ensure the seat post outer shaft diameter conforms to
the inner diameter of your bicycle’s seat tube of the
Ensure the seat post is pointed in the correct
direction. The side of the post which has the cable
barrel nut should be pointed towards the front of the
Insert the post into the frame and make sure not to
insert below the Minimum Insertion Line which is
labeled on the backside of the post. Tighten the seat
post clamp to a maximum torque of 7Nm.
Install the remote lever on the handlebar of the bike
Install your saddle on the head of the saddle, using a
5mm hex wrench to tighten at torque of 12Nm~15Nm.
To ensure proper function before riding, the post
needs to be cycled up and down several times by
pressing the lever and applying weight to the saddle.
Install the remote lever on the handlebar, position at
the desired location and tighten with a 3mm hex
We call this “infinite adjust”. Before releasing your
body weight off the saddle, release the remote lever.
The saddle will remain at the desired height.
Ensure to lock the smaller locking nut to avoid the
barrel nut from loosening over time from the base.
See pic below:
Make sure that the release arm, which the cable is
pulling down to free the post to be adjusted, is always
able to return to its fully extended position. See pics
below for proper example:
To raise seat post:
Remove body weight from the saddle and push the
remote lever with your thumb. Again, this post can be
set at any height within the designated range. Once
you have found the desired saddle height, release the
remote lever.
If the seat post is lifted while in the lowered position,
the post stanchion (inner tube) will extend from the
outer post tube. This is normal and it will return to the
proper position once weight is applied to the saddle.
Picking up the bike by the saddle can also cause a
temporary “spongy” feel.
Do not attempt aggressive riding until you are totally
familiar with the operation and function of the seat
post. NOTE: You will become familiar with this simple
procedure quickly with practice.
Adjusting the Rainier Dropper Post position while
riding may result in loss of control due to body weight
adjustment. Please be careful!
The cable tension is preset for the most convenient
actuation, however in case of no movement of the
seat post or inability to set the post at desired height,
please check and adjust the cable stretch by adjusting
the threaded barrel nut adjustment following the
below directions:
To secure the cable to the frame, utilize existing cable
mounts on the top tube of the frame or use zip ties to
do the same. It is important that the cable is properly
secured as to not get snagged or wrapped around
anything. This could result in rider injury.
The Rainier dropper post provides the rider a simple and
convenient way to lower the saddle height without having to stop
and get off the bike to adjust height.
To lower seat post:
Push the remote lever with your thumb and apply your
body weight to the saddle. This model of post can be
set at any height within the designated travel range.
Please turn the barrel nut carefully in small
incremental adjustments, to avoid the threaded
portion of the barrel nut from becoming unthreaded
from the base.
Routine maintenance of the Rainier Dropper Post will provide
longevity and proper performance of the post.
Before every ride: Clean the exposed portion of the
post stanchion (inner tube) with a clean cloth and
make sure to clean around the seal wiper as well.
The below are extremely important. Please read each thoroughly
and ensure you understand before using the Rainier Dropper
Post. If you have questions about any of the below, please
contact us immediately at
Incorrectly identifying the correct seat post diameter
for the particular bicycle frame seat tube that the
Rainier Dropper Post will be installed into can result in
slippage or failure, causing serious personal injury or
Activating the remote lever or release arm on the
head of the Rainier Dropper Post will cause it to rise
up quickly. Do not operate until the saddle is installed
on the seat post and the post installed on the bike, as
described prior in this manual.
Always make sure nothing is in the way of the post as
it is inserted into the frame. Forcing the post into the
frame if it feels resistance could cause damage to the
frame. Especially with some full-suspension design
frames, pivots or bends in the seat tube could prohibit
the post from being inserted to desired height.
Do not adjust the height of the Rainier Dropper Post
while riding the bicycle as it may result in loss of
control and potential bodily injury. It is recommended
that the height of the saddle is adjusted when
It is essential to keep out of mud and water.
When storing for extended periods, keep the seat
post in the fully extended (up) position.
[seal cap pic]
Do not loosen the main cap. Ensure the main cap is
fully tightened all the time (Picture below):
Ensure the bottom preload adjustment nut does not
protrude beyond the bottom of the seat post. (Picture
Never exceed ~7Nm of torque on the seat post clamp.
If you are not an experienced bicycle mechanic, or do
not have the correct tools for this installation, please
take the seat post with instructions from this Owners
Manual to your preferred bicycle retail shop and have
them perform the installation.
This Seatpost is warranted for a period of one (1) years from the
date of purchase against defects in workmanship. The warranty
is expressly limited to the repair or replacement of the defective
part at PNW Components, LLC’s discretion and is the sole
remedy of the warranty. The warranty applies only to the original
owner and is not transferrable. Proof of purchase is required to
validate warranty eligibility. The warranty does not cover normal
wear and tear, routine maintenance, improper installation or
improper use of the Seatpost. Modification of the Seatpost in any
manner shall void the warranty. Any damage caused by the
Seatpost to the bicycle frame is not covered by the warranty.
PNW Components, LLC shall not be responsible for incidental or
individual costs incurred that are not covered by this warranty.
The user assumes the risk of any personal injury or property
damage, including damage to the Seatpost, and any other
losses, if the Seatpost is modified or improperly used at any
time. This warranty gives the consumer specific legal rights
which vary from state to state and province to province.
To remove the rod nut from the cable, loosen it with a 2mm
hex key
Measure the cable housing length so that when the
handlebars are turned to 90-degrees in either clockwise or
counter-clockwise direction, there is enough cable length
not to pull the housing out of the remote lever, barrel nut
adjust or actuate the release arm.
It’s always best to measure twice before cutting. “Measure
twice, cut once” as they say.
Before cutting the inner cable or cable housing, it’s best to
pull the inner cable through the cable housing to ensure it
doesn’t accidentally get cut too short.
Cut the cable housing to the desired length.
Reassemble the inner cable into the housing and pull all
the way through the remote lever, housing and rod nut.
Pull the inner cable tight so that the remote lever is in the
fully extended position (not depressed as it would be when
lowering the post)
Please make sure the rod nut is tightened at around 2021mm from the end of the cable housing. Tighten the rod
nut with a 2mm hex wrench.
Cutting The Cable Length:
Cutting the cable requires appropriate tools and bicycle
mechanic experience. If you are not an experienced bicycle
mechanic, it is recommended that you take this manual to your
local bicycle retail shop and let them perform the cable cutting
and installation of the Seatpost as described in this Owners
Disassemble the cable from the post according to the
below steps:
Cut the end of the inner cable on the opposite side of the
rod nut than the cable housing, making sure to leave 11.5mm of inner cable.
Adjust the barrel nut ferrule to the appropriate position and
try pressing the remote lever to ensure proper function of
the dropper post. Cycle the post stanchion up and down a
few times.
Please refer to OPERATION section of this Owners Manual
when trying to adjust the cable stretch through the barrel
nut ferrule.
PNW Components Rainier DropperPost Owners Manual