Yuasa have recently introduced their new TTZ range of batteries as an alternative to the ultra-high performance Yuasa YTZ batteries which are fitted as original equipment to many of today's top-of-the-range motorcycles. The TTZ batteries are made using the same proven technology as Yuasa's regular YT/YTX series of maintenance-free batteries and they provide a cost-effective alternative to the YTZ battery, balancing performance and longevity for users where the reliability of the Yuasa brand is still a priority. The TTZ12S-BS which can be used to replace the YTZ12S.