Pro Lock Aluminum Nipples

The Pro Lock system features an integrated adhesive compound inside the nipple threads. This creates a secure bond as you thread the spoke in, which significantly increases the durability of your wheel build by preventing the spokes from loosening over time.

Yes, these are suitable for mountain biking, though they are primarily chosen by builders looking to shed rotational weight. If you are building a heavy-duty wheelset for aggressive enduro or downhill riding, you might consider brass nipples for their higher fatigue resistance, but these are excellent for XC and trail applications.

The thread size must match your spokes. You need to check the gauge of your spokes—standard mountain and road spokes typically use a 2.0mm thread, while some lightweight or specialty spokes use a 1.8mm thread. Always verify your spoke specifications before ordering.

It is generally not recommended. Because the Pro Lock adhesive creates a permanent bond, removing the spokes can compromise the integrity of the thread-locking compound. For the best results and wheel safety, use fresh nipples whenever you rebuild a wheel.

No special tools are required, but a high-quality, precision spoke wrench is essential to prevent rounding the aluminum flats. Because aluminum is softer than brass, using a wrench that fits perfectly is critical to avoid damaging the nipple during the tensioning process.