Proto Murder Bearings 4-Pack

Ultra-Ceramix bearings are the gold standard in bearings.

Featuring ceramic ball bearings instead of steel; The Ultra-Ceramix ball bearings are made from grade 5 silicon nitride, which can be manufactured into a more perfect spherical shape, massively reducing friction.

In statistical terms, ceramic ball bearings are 58% lighter, 120% harder, 68% stiffer, and 75% smoother than steel bearings, making them faster, more durable, and ultimately far superior.