EarthX ETX12A Eco-Friendly Lithium Motorcycle Battery with Built-in Battery Management System Replaces Yuasa: YB5L-B, YTX5L-BS, YTZ7S, YTX7L-BS; can be used as an upgrade for the ETX6A Designed, engineered and assembled in the USA 2 year full coverage warranty (Not a prorated warranty that offers you the replacement at a discounted rate IF they dont void the warranty) Over discharge protection (#1 killer of all batteries and other brands do not protect against this and void the warranty) Some small cc dirt bikes / ATVs (like a CRF250X, the Yamaha WR450, Kawasaki KLX450R) require a 5mm battery terminal screw. Our terminal adapter kit which includes a 5mm screw (sold separately) can be used for such installations.