You have to grind down the retaining tab (for the plastic stem holder) on the wheel if you want to use this on the Valk. It only takes a minute of so, just don't sneeze while holding the grinder

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I have one on the rear and it appears to be fine, easy to fill and check with a 90 accutire guage. It was done after the last rear tire was changed due to a flat.
Tried to break the front bead with c-clamps but was unsuccessful so will wait until that tire gets swapped before swapping it out.