Yuasa produces mostly car and motorcycle batteries since 1979 in the US (but also ATV, snowmobile, watercraft etc. batteries). While being the biggest manufacturer in it's field in the US, the company's roots reach over 100 years ago in Japan. High quality and durable batteries are corrosion-resistant, with high starting current and endure vibration. They are designed to last longer than their competitors, they also have slower self-discharge. Yuasa batteries are widely used in the motorsport field. Yuasa supplies such manufacturers, as Ducati, Yamaha, Kawasaki, Honda, BMW, HD, Triumph, Aprilia etc. with original batteries, therefore there's a big chance that your bike had a Yuasa battery when it rolled out of the factory.