Where can you buy an aerospoke rim?

Bicycle rims are NOT aerospoke specific. Any wheels can be laced with either round or "flat" areospokes.

If you require a rims replacement; contact your LBS (Local Bike Shop) for the current options.

If you're building a new bicycle wheel using aerospokes; be aware that not all wheel hubs will work with every aerospoke brand/make- as they are size specific.

Your LBS can explain your options.