JTEKT Corporation, under its renowned Koyo Bearings brand, has expanded the application of its advanced ONI BEARING technology with the launch of a new high-performance bottom bracket for road bicycles. Designed to deliver ultra-low torque, smooth rotation, and enhanced pedaling efficiency, this innovation demonstrates how precision bearing engineering can redefine everyday riding experiences.
Bearings are often described as the foundation of motion in modern machinery, and JTEKT’s latest product innovation highlights how this fundamental component can make a measurable difference even in performance sports. Scheduled for market release on December 24, 2025, the newly developed bottom bracket integrates high-precision ONI BEARING ceramic ball bearings, bringing industrial-grade bearing expertise directly into the cycling domain.
The ONI BEARING series, introduced in 2022, was originally developed as a premium replacement bearing for road bicycle wheels. Leveraging JTEKT’s long-standing know-how in materials science, precision machining, and tribology, the ceramic bearings quickly gained recognition for their exceptionally low friction characteristics and durability. The expansion of this technology into a complete bottom bracket assembly marks a significant step forward in product evolution.
At the heart of the new bottom bracket is a design philosophy focused on maximizing power transmission while minimizing rotational resistance. By using two ONI BEARING units within the assembly, the bottom bracket achieves noticeably smoother rotation compared to conventional products. This translates into more efficient pedaling, quicker acceleration, and a refined riding feel — benefits appreciated by both competitive cyclists and serious enthusiasts.
In addition to performance gains, JTEKT has prioritized practicality and compatibility. The bottom bracket supports Shimano BB86 cranksets, featuring a shell inner diameter of 41 mm and a shell width of 86.5 mm. Unlike some high-performance bicycle components that require specialized installation or frequent adjustments, this product has been designed for ease of handling, making premium bearing technology accessible to a wider user base.
The ONI BEARING brand has already proven its capabilities in professional cycling. During the 2025 season, bearings from the series were used by top-tier riders and teams, contributing to victories on the international racing circuit. This real-world validation under extreme conditions reinforces the reliability and performance credentials of the technology now embedded in the bottom bracket.
JTEKT’s message, “The moment you pedal, your world changes,” reflects its ambition to move beyond industrial applications and deliver tangible improvements in human mobility. The new bottom bracket aligns with the company’s broader 2030 Vision, which positions JTEKT as a solution provider enhancing movement, efficiency, and sustainability through advanced manufacturing.
By combining ceramic bearing innovation with user-friendly design, JTEKT’s ONI BEARING bottom bracket exemplifies how precision components continue to shape performance — not only in machines, but in motion itself.
