Product Review

Under Pressure:
Zephyr has strengthened the weak links in your typical valve stem, by redesigning the standard PVR70. We sometimes take things for granted. Have you ever walked out to your motorcycle and found that your tire has suddenly gone flat? Don't let an inferior valve stem be the cause of your ruined ride. Many cheaper valve stems are made of less durable rubber, and are prone to cracking.

Q: How is your Zephyr valve stem different than a standard PVR70 valve stem?
We've constructed the valve material entirely of hardened brass, with no internal coating, so you don't have to worry about heat gumming up the valve. The gasket, which the valve seats against, has also been redesigned. Whether you're stuck in extreme cold, or blistering heat, our valve stems have at least 50% less leakage than PVR70 valve standards.

Materials:
Valve: Brass
Internal Coating: No
Gasket: High Resiliency Rubber
Stem Base: Rubber