Klune-V Rapid Air Down Valve Stem
Kit consists of 4 new valve stem assembly's that replace the existing valve stem on the wheel, or can also be added as a second valve stem.
Click HERE for the installation instructions that come with the kit.
Click HERE for all pictures of the Klune-V Rapid Air Down (RAD) Valve.
Step one is to deflate the tire. I removed the valve core to let all the air out.
Next break the bead off one side of the rim. This will allow for the removal of the existing valve stem. Be careful not to let the old valve stem or any parts of it fall into the tire!
With the valve stem removed, you are ready to start installing the new Klune-V stems.
Here is a picture of the stem as it is installed (top) and the order of installation (bottom).
Here is a close up of the new valve stem. The space where the yellow line is shows where the rim will be when it is installed. The larger thumb screw on the outside of the valve stem has been removed so a nut can be temporarily added to allow the nylock nut to be tightened on the inside.
Insert the valve stem into the wheel from the outside.
Carefully install the rubber grommet, the flat washer and the nylock nut onto the inside. Again, be careful not to drop any parts into the tire! They are very hard to get out!
I used a small block of wood to hold the tire away from the rim to allow me to work on both sides of the new valve stem without having to fight the tire.
Hold the outer part of the valve stem while tightening the nut on the back side. Tighten it only until it is snug, you don't want the rubber grommet to be bulging out on the outside.
Install the thumb screw and air the tire back up. Be sure to keep your fingers away from the bead and the rim when it seats!
Test the new valve stem with soapy water. If there are bubbles, you have a leak and need to go back and check your work. If you over tighten the stem, it will leak.
The new stem was actually a bit shorter than my old stem, which is good as it will keep it away from any possible rocks or other items that could break it off and cause a flat.
There is a slight space between the bottom of the valve and the washer. We will have to see if the valve leaks over time, but there were no bubbles present when we tested it.