net/rpc is an RPC transport that's part of the Go standard library. It's a simple and fast transport that's appropriate when all of your services are written in Go.
Using net/rpc with Go kit is very simple. Just write a simple binding from your service definition to the net/rpc definition. See netrpc_binding.go for an example.
That's it! The net/rpc binding can be registered to a name, and bound to an HTTP handler, the same as any other net/rpc endpoint. And within your service, you can use standard Go kit components and idioms. See addsvc for a complete working example with net/rpc support. And remember: Go kit services can support multiple transports simultaneously.