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XT660Z T�n�r� Tech Section Tyres, Mods, Luggage & Long distance preparation |
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clarity on filters.?
Hi, can someone explain why DNA filters are referred to as stage 1,2,3..? And why people fit stage 123 not stage 1 OR 2 OR 3.? Obviously it's degrees of filtration, I'm just unsure why people say they have all three! Or maybe I'm being dumb!! Steve
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