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[Marty]

Does anybody know what size Standard pancake air filter fits the 500 trials? My carb inlet measures 44mm but I am not sure which one I need to order as they are listed for amal 600 or 900 carbs and mine is standard.

[Gwilly]

Hi Marty, The 600 mk1 concentric filter (pancake) fits 39-45mm code AM/FILTER15 £13.00 from our host. regards gwilly

[Howard 612]

It's good that Hitchcock's also sell the paper elements that fit these filters, Watsonian's want you to buy a complete new filter every time the element is dirty/blocked.

[Marty]

Thanks for the replies, its the one with the replaceable paper element I am after to put the bike back how it should look. So will need the full filter to start with.