I notice jitsie and others make a diiferent peg hanging bracket which is 10mm further back for the 4RT and 315R. Does this make much difference and is there a downside? Opinions on 315R fitment especially welcome.

I have the Jitsie hangers on a 4RT. Slightly back and seem a bit lower with the Raptor pegs. Position suits me but not all that noticable. I do really like the kickstart now clearing the footpeg - used to have Hebos on the standard hangers and the kickstart didn't clear them. 10mm back may provide extra leverage on the frame but I can't see it being an issue. The frame and hangers certainly look strong enough. 315R and 4RT hangers look similar but are different ... I know, I tried.

Andrew