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Hagon is still in business. Dave Quinn Motorcycles was the US distributor until he retired last year, I'm not sure who is handling them now.
Dave Quinn was the really good thing about Hagon shocks. You could call and describe your application, what loads you expected, what sort of roads you were usually on, and he'd give you a spot-on recommendation for the type, length, springs, etc. Sorry to hear he's retired; hope the folks who have taken over absorbed some of his expertise ....Lannis