| I could tell you if I could go on Ducatisti! It is more on the 583 (2-2.5kg saving) than on te 620 (Bradders tells me it is only 1kg saving... Presumably because they improved how light the steel one is). For the money it is pretty good because it is a similar price and weight saving to a race battery (compared to a normal, but lighter, battery), but has the advantage of reducing unsprung weight and therefore improving the rear suspension response. | 
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