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K1 fork lower question

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burchy75:
While dismantling some of the forks I have here I noticed that my K1 lowers have the bolt at the bottom of the fork but the schematics I have here don't seem to include it.  I know the K3 onwards had the bolt to hold the piston in place but going by the parts diagram in a K0-K2 fork the bolt wouldn't screw into anything as far as I can see.

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I'm not entirely sure if people have drilled out earlier lowers to accommodate K3 internals (there is a lot less to the later internals than the earlier models).  Is that what I have here.

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The piston stuck in one of the K1 lowers looks remarkably like the K3 piston itself.

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Anyone on here heard of peeps swapping out the internals on the earlier forks? 

Trigger:
All have a allen bolt with a sealing washer  ;)

burchy75:
The piston in the K1 lower looks like a later models piston though, that shouldn't be in there should it?

Trigger:
I can't work out from the last picture what is what.

burchy75:
It's the main opening to the fork lower (where the fork seal sits) and there is a piston of some sort in there but I didn't think the earlier forks had a piston system but rather a load of other bits and pieces that Hague the same result. There is a K0 set of pistons on the D&K eBay site at the moment so I'm a bit confused, it doesn't take much  ;)

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