ALPHA Wheel Bearing Kit

ALPHA Bearing Architecture

CeramicSpeed ALPHA Wheel Bearings build on CeramicSpeed's proven low-friction bearing architecture with a new combination of hardened stainless-steel races and light-contact seals. At the centre of each bearing are CeramicSpeed Class 1 silicon nitride ceramic balls, precisely matched to ultra-polished raceways and held in place by a reinforced polyamide cage. The construction is designed to provide smooth rotation under load while maintaining precise and stable performance over time. The hardened stainless-steel races improve corrosion resistance and durability, creating a bearing architecture developed to remain fast season after season.

Micron-Matched Integration

Bearing performance is influenced not only by the bearing itself, but by its integration within the complete wheel system. Hub construction, bearing fit, and spoke tension all influence friction and rotational performance. In collaboration with CeramicSpeed, Polymer Workshop® has measured and tested different configurations to identify the optimal bearing fit with precision down to the microns. The result is a bearing solution specifically matched to the requirements of the Polymer Workshop® hub system, balancing low friction with the structural stability required from a high-performance wheelset.

Low-Drag Protection

ALPHA introduces a new light-contact seal developed to reduce drag while providing increased protection against dirt and moisture. The bearings are optimized with low-viscosity CeramicSpeed All Round Grease, working together with the updated seals to minimise friction while maintaining consistent performance in real-world riding conditions. Combined with the new hardened stainless-steel races, the system provides improved corrosion resistance and durability without compromising rotational efficiency. CeramicSpeed tests ALPHA Wheel Bearings to deliver up to 3–5× longer lifetime than standard bearings, reducing the need for replacement while maintaining performance over the long term.