Ok, so just starting to ahve a fiddle about with the 400 now.
Just swapped over from the Beta handguards to Acerbis Rallypro wrap arounds.
I took a chance on the Renthal fatbar kit, and it does fit on the black Betamotor branded bars made by Reikon on the 07. Unsure what bars are on the pre-07 models. Trim to end of throttle tube required and bit of padding against abrasion of clutch line on guard metalwork seems a good idea as this needed rerouting slightly.
Also while in that region worth checking the wiring to the starter, mine had chaffed where it had been slipped under the bolt attaching the starter unit.
