BCR5 Ultra: Disc Performance Kit

The Gold Standard of Momentum.

Maximize your mechanical advantage with the BCR5 Ultra. Specifically engineered for high-performance 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.

Road/Gravel-Specific Sealing: Equipped with non-contact, dual-lip seals designed to keep road grime out without adding mechanical drag.

Hub Compatibility

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

ZIPP NSW series V1 Hubs DISC (2015–2021))

Front Hub (2): 6903 (17x30x7mm)

Rear Hub Shell (2): 6903 (Drive Side) & 6804 (Non-Drive Side

Freehub Body (2): 6803 (17x26x5mm)

What’s In The Box

BCR5 Ultra Ceramic Bearings (Full Hub & Freehub Set)

Bala Ceramica Founder’s Card 

Bala Race Grease

Technical Spec Sheet with validated micron tolerances