what kind of alumium is showa or kyb upper fork tubes made of ?

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6/21/2018 4:53 PM
Edited Date/Time: 6/21/2018 4:53 PM

anyone know the kind of alloy aluminum SHOWA RM and CR 47mm and 49mm upper fork tubes are made of?

or the kayaba 48mm YZ forks tubes alloy are ?


been trying to find out for years and I have no idea ?


if someone can confirm this would be great ?


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6/22/2018 3:35 PM

Not sure of the exact alloy, but the WP upper tubes are 7000 series aluminum. I'd bet all the others are 7000 series as well.

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Billy Wight
Luxon MX
@LuxonMX
https://luxonmx.com
Motocross Components Engineered for Performance

6/22/2018 6:42 PM

6061 or 7000 series.

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