Ceramic Bearings & Oversized Pulley Wheels (OSPW): True Wattage Gains vs. Cost

Oversized pulley wheel systems (OSPW) reduce chain articulation angles and bearing rotational speeds.

Combining ceramic bottom brackets with 19T pulley cages yields a 2.0-2.5 Watt mechanical friction reduction at 250W output.

Section IV: Ceramic Bearing Non-Contact Seal Maintenance

High-pressure washing must be avoided near bottom brackets to preserve fragile low-friction non-contact seals.