https://www.fumpapumps.com/shop/fumpa/
It's pricey at $179 but man does this seem ideal for transition. It has a built-in battery that's charged via a USB port. To my eye it looks like it would work for a disc wheel without modification too.
It's pricey at $179 but man does this seem ideal for transition. It has a built-in battery that's charged via a USB port. To my eye it looks like it would work for a disc wheel without modification too.