by Patrick Davis
Learn about valve extender integration from Zipp Speed Weaponry.
Deep section carbon rims are much more common for everyday use than they used to be. They come in many different depths and brake surface types. Zipp's Tangente line has been the forefront of aerodynamics and functionality since it was introduced. Their most recent addition is a super sleek, holistic approach to air sealed valve extenders.
For a long time the standard valve adapters were used as follows:
- Unscrew presta valve top
- Screw on valve adapter
- Attempt to pump up tires to correct air pressure...
This worked... sometimes. Most of the time I gave up messing with it before the pressure was correct. Due to the presta head always being open and the leaky seal between extender and valve, it was nearly impossible to get the correct tire pressure.
A technique used to get a better seal was plumbers tape or a liquid sealant applied around the valve prior to threading on the valve. This worked until the tube had to be changed or the extender was un-threaded.
Here is Zipp's premium lineup. If you want to get a tight seal every time and have correct pressure readings this is what you want.
700c x 18–25 mm 37 mm presta valve tube
Valve core is easily removable
Tube weight is 87 g
Retail $10 Buy Now
Lengths include: 27 mm for 303, 41 mm for 404, 65 mm for 808, 91 mm for 1080
For tubular tires go up one size due to shorter 25 mm valve length
Each sold separately
Retail $9–12 Buy Now
Comes in a pack of 2 4/5 mm sizes
Work perfectly for removing valve cores and tightening the connection between valve and extender
Retail $7 Buy Now
Kit includes three integrated valve extenders and two wrenches.
Length choices: 27 mm for 303, 41 mm for 404, 65 mm for 808, 91 mm for 1080
Retail $25 Buy Now
After finding the correct valve length for your rim, start with the tube.
Use the 4mm wrench and unscrew the valve core.
Now it's time for the extender.
Screw the core from the tube into the extender.
Use the wrenches to get the valve and extender snug.
As suggested, I went with a 27 mm extender on my 303 Firecrest carbon clincher and it is perfect!
Other companies make extenders with removable valve cores, but I prefer to use components from the same company. Personally I believe that if they were designed together, they should be used together.
I hope this comes in handy the next time you are considering tubes and extenders for your wheels.