I’ve just replaced the fuel filter and the fuel lines on my 2004 Rockster based trike, fuel filter was dated 2003 and the fuel lines had a best before date of 2021, a somewhat fiddly job. The metal U bend was from Tills.de. I was cheaper than Motorworks until HMRC took £45 tax. I also replaced the external fuel lines, the PO had fitted metal disconnects.