Four decades of precision engineering, driven by a passion for performance and a commitment to quality.
Every bearing is machined to tolerances measured in microns. Precision isn't a feature — it's our foundation.
We build products designed to outlast expectations, tested under real-world riding conditions.
Our R&D team continuously pushes the boundaries of bearing technology, materials, and lubrication chemistry.
Committed to eco-friendly manufacturing processes and reducing our carbon footprint at every stage.
Our leadership team brings together decades of engineering, finance, and business expertise to drive TOP Piston forward.
CEO
With over 30 years in precision manufacturing, Hiroshi founded TOP Piston in 1985 and has guided the company from a Tokyo workshop to a global bearing supplier.
Director
Yuki oversees global manufacturing and supply chain operations. Her engineering background and leadership have driven a 40% reduction in production lead times.
Finance
Kenji manages financial strategy and reporting for TOP Piston's international operations. A CPA with expertise in cross-border manufacturing finance.
Engineering
Drives innovation in bearing materials and design at our Tokyo laboratory.
Contact our bearing specialists to find the right solution for your application.