For future reference, RadPower has told me they don't have these in stock but that the specs if I want to find my own are:

Extended Hook Tension Spring, 14mm OD x 55mm Length, 1.5mm wire diameter

Hi! Please see attached photos. Sorry for the delay, it seemed like the forums were having some issues.

I'm sure this is a very dumb question, but the bell on my new Rad Wagon 4 won't ring (just a dull clank). Is there something that has to be removed or did it just get damaged in shipping? It's surrounded a cheap piece of plastic that looks like it would be used for shipping purposes, but as far as I can tell it's an essential piece of the mounting.

Thanks!