BCR5 Ultra: Disc Performance Kit

The Gold Standard of Momentum.

Maximize your mechanical advantage with the BCR5 Ultra. Specifically engineered for high-performance road/gravel disc wheel-sets, these aren't just bearings—they are a critical technical upgrade for racers who refuse to leave watts on the table.

Developed through years of experience on the racing circuit, the BCR5 Ultra system is designed to provide near-zero rolling resistance while maintaining the durability required for real-world pavement conditions.

The Technical Advantage

Precision Grade: Certified ABEC 5 tolerances for ultra-low friction and                          maximum rotational consistency.

Material Science: Grade 5 Silicon Nitride (Si3N4) ceramic balls—58% lighter and 40% stronger than high-grade steel.

Precision Engineered for Every Surface

Whether you are navigating smooth asphalt or rugged backcountry trails, Bala Ceramica provides specialized sealing technology tailored to your riding environment.

Road-Specific Sealing

Our Road kits feature non-contact, dual-lip seals engineered to maintain a pristine internal environment. These seals are designed to effectively lock out road grime and moisture while virtually eliminating mechanical drag, ensuring every watt goes into your forward momentum.

Gravel & All-Road Protection

For riders venturing off the beaten path, our Gravel configurations utilize the same ABEC 5 precision paired with enhanced sealing durability. This setup provides the resilience needed for dust, silt, and variable terrain without compromising the high-velocity performance of our Si3N4 ceramic balls.

Hub Compatibility

This kit is optimized for premium road disc hubs, including:

 (DT 240 internals) 

• Front Hub (2 bearings): 6903/ 61903 bearings
  
• Rear Hub Shell (2 bearings): 61802  
• Shimano Freehub (2 bearings): 61902
• SRAM XDR Freehub (2 bearings): 6802 

What’s In The Box

BCR5 Ultra Ceramic Bearings (Full Hub & Freehub Set)

Bala Ceramica Founder’s Card 

Technical Spec Sheet with validated micron tolerances.