SLT Headset Bearings

SLT (Solid Lube Technology) utilized in a headset bearing, balls aren’t retained with a cage but with an almost fully encapsulating polymer. It allows a very small but exact amount of the ball to protrude and contact the inner and outer races.

The polymer creates a solid seal up to the internal walls of the bearing preventing liquids and fine grit from getting in to the bearing raceways.

They also have a Black Oxide outer coating to prevent rust.

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What Is an SLT Headset Bearing and Why Does It Matter?

An SLT headset bearing uses an encapsulated solid plastic polymer instead of grease and a cage. This polymer fills the internal space of the bearing, creating a tight seal that blocks water, dust, and grit from reaching the bearing raceways.

It distributes just enough oil through the polymer to keep the bearing well lubricated, without needing re-greasing. The result is a fully sealed, maintenance-free bearing that performs reliably in wet, muddy, or high-load environments — ideal for riders who want more time on the bike and less time in the workshop.

How Does Solid Lubrication Technology Improve Performance?

SLT solid lubrication technology works by locking sufficient oil into a stable, self-lubricating polymer. This removes the need for loose grease while ensuring all internal surfaces stay protected during movement.

The otherwise solid polymer evenly distributes lubrication across load paths, reducing wear and improving performance under pressure. You’ll get consistent performance across road bike headset bearings, MTB headset bearings, and rear suspension pivots in high-impact conditions.

You can explore our full range of headset bearings or browse our bearing tools and accessories to help complete your installation.

Is an SLT Headset Right for Your Setup?

SLT headset bearings are the right choice if you ride regularly in wet, gritty, or high-impact conditions. They're especially suited for riders who:

  • Need a corrosion-resistant and maintenance-free bearing solution
  • Want longer service life and fewer replacements
  • Value the performance of SLT solid lubrication technology

You’ll find these bearings in use across road, gravel, cross-country, and trail bikes. They are compatible with a wide range of headset designs.

Note: SLT bearings are available in multiple sizes. Check your bike’s headset specification or contact us if you need help choosing the correct fit.

Where Can You Buy SLT Headset Bearings?

You can order online from Aire Velo Bearings with fast UK delivery and expert support. We stock a full range of SLT headset bearings and keep popular sizes ready to dispatch.

If you need help with sizing, fitment, or compatibility, get in touch with our team, we’re here to make sure you find the right bearing for your bike.

Get Long-Term Reliability with SLT Headset Bearings

Upgrade to SLT headset bearings for solid lubrication, corrosion resistance, and maintenance-free performance. Whether you're replacing worn parts or building a new setup, this is a long-term solution that works.

Order online now or contact Aire Velo Bearings to get started. Complete your order with components from our full headset collection.