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Looks ace. Needs a stem that matches the TT rise :)
Your damper is the same as the one in the picture, maybe a 2cm smaller, but it's the same design, basically a sealed tube with hydraulic fluid in it and a piston that's fixed to the middle of the damper rod. It should be full of oil, no air at all. But getting it air free is hard work.
The rod is in two halves - the lower half it press fit to the nut on the top cap, the upper half to the top cap itself. The lower half rotates when you operate the lockout that closes the ports in the piston.
The 'mystery thing' is a bumper for when the fork is at full extension - it's needed because the piston rests on the damper cap when there's no compression in the fork.
@Howard picture
Taken near work, I think those trees belong to the local group of hooded Irish crows as there was loads of crowing and circling while I stood there.
I apologized and made off.
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