>>640829That sounds like the freehub is either sticking due to not being greased or the pawls are broken and it's trashed. If you know how to take the cassette off you can sometimes free them up by shooting a solvent into the freehub body, letting it dry, then shoot spray canned white grease into it. This is a spare one for my X9 hub. I bike in the winter and it's hard on them so I get spares.