Has anyone pulled one of these apart to service it?? Been offered one with the seal leaking but don’t want to commit unless it’s viable to do. Also who does the spares kits for these??

Well upgrade are the importers for xfusion so there’s your parts bit sorted as for rebuilds not sure but a good look on the net should sort that out I would think.

Infact first thing that came up ,
http://www.cyclistno1.co.uk/features/maintenance/x-fusion-hilo-service.htm

Cheers Batman, your a star 😀