CeramicSpeed 61806 Bearing

This bearing features an inner diameter of 30 mm, an outer diameter of 42 mm, and a width of 7 mm. Please double-check your current headset or hub specifications to ensure these measurements are compatible with your setup.

These bearings use grade 3 silicone nitride balls, which are significantly harder and rounder than standard steel balls. This reduces friction and rolling resistance, leading to a smoother feel and improved power transfer during your ride.

Yes, they are designed for versatility and can be used in road, track, and mountain biking disciplines. The non-contact seals are engineered to block dirt and moisture effectively, protecting the internal components even in challenging conditions.

These bearings come pre-lubricated with CeramicSpeed All Round Grease, which is a low-viscosity lubricant designed to minimize friction. If you need to service them, we recommend sticking with the manufacturer's specified grease to maintain optimal performance.

Non-contact seals provide a barrier against contaminants like grit and water without creating the drag associated with traditional rubber contact seals. This allows the bearing to spin more freely while still offering reliable protection for the internal races.