for most folks AGM is definitely the way to go. unless saving weight is more important than saving $$$. doesn't KTM stand for "keep throwing money"? just kidding .. but KTM crowd does buy it's fair share of farkles. unfortunately one cannot always go by LiFePO4 mfg listings for KTM. Placing a Shorai LFX18 in a 990Adv that routinely gets taken on trips a hundred miles from support in cold conditions is a receipt for failure. if you had installed a correct size LiFePO4 things would have turned out differently. due to battery tray size limitations EarthX ETX24 or ETX36 (winter duties) fits 990Adv nicely.