Compatible with Yamaha R1 and R6 motorcycles from 2004 to 2020, including years such as 2019, 2018, 2017, 2016, 2015, and 2014. This product is precisely engineered to integrate seamlessly with the motorcycle's brake system for reliable fluid containment and performance. Key benefits: Ensures consistent brake fluid levels, supporting stable and responsive braking performance. Effectively prevents leaks and air entry into the brake system, maintaining smooth and predictable braking control. Designed for exact fitment, making installation straightforward without modification. Function and performance: Maintains brake system operation by protecting fluid integrity under demanding riding conditions. Compatible with OEM brake system specifications, ensuring dependable compatibility and longterm reliability. Built with durable materials that resist wear, corrosion, and temperature fluctuations, offering consistent service life. Practical use scenarios: 1. Ideal for daily commuting where consistent braking is essential in varying traffic and weather conditions. 2. for longdistance touring, ensuring dependable brake performance over extended rides. 3. Suitable for track days or spirited riding, where maintaining precise braking control is critical for safety and performance. By combining precise compatibility with durable construction, this product delivers reliable braking support for Yamaha R1 and R6 owners seeking consistent performance and longterm protection for their brake systems.