Far better choice for deep carbon aero wheels (I'm using with Zipp 808's) than other extenders, especially Zipp's own. Relocating the valve core out to the end, as these do, makes for far more accurate inflations (and subsequent pressure measurements).
Verified purchase: Yes | Condition: New
Since the valve stem is removed from the tube and inserted into this extender, this product works in your aero profile rims. Only thing is, you have to shop pretty closely to get tubes that have a removable valve stem!
Verified purchase: Yes | Condition: New
good quality and fash shipping..highly recommended
Verified purchase: Yes | Condition: New
Good price for a hard-to-find bike accessory.
Verified purchase: Yes | Condition: New
It is of good quality, form and function.
Verified purchase: Yes | Condition: New
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