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So I have just acquired a BMC Trailfox for my son, which has a 125mm cable operated dropper. The original BMC spec says it is HDK, although the unit itself is unbranded.
It is slow to return and does not reach full extension. There is a dust cap which appears to reveal some form of air port facing to the rear of the post. But no obvious way to attach a valve/pump.
Does anyone have any experience of working on and HDK post? Or something similar with a rearward facing air valve?
Posted : 11/06/2019 9:18 am