Hold Fast Insert Compatible Valves

These valves feature a specialized base design that creates a channel for air to pass through, even when a tire insert is pressed directly against the valve opening. This ensures you can inflate your tires quickly without the insert choking the airflow.

No, you don't. The valve cap itself is designed as an integrated core tool, so you can easily remove the core and add sealant whenever you need to without carrying extra equipment.

The right length depends on your rim depth. The 42mm valves are generally suitable for standard mountain bike rims, while the 65mm option is better for deeper profile rims to ensure you have enough clearance to attach your pump head securely.

Yes, these are standard Presta valves. They will work perfectly with any pump or inflator head designed for Presta valves.

Absolutely. While they are engineered specifically to solve airflow issues with inserts, they function perfectly as high-quality, durable tubeless valves for any setup.