Pull back riser?

Anyone any experience advice regarding Bar pull back risers?

I would like to fit them but do not want to get into having to replace brake lines etc.

Yes.

I fitted the alloy blocks which move the bars back circa 25mm & raise them circa 20mm.
They move the bars to a more natural riding position, & only take around 10 mins to install.
Definitely improved long distance travel, because the standard position was too far forward for me.
All cables & hoses are ok as standard.

Myke.

No problem with the brake line 'tho it does look tight at first. I went on to add a second set and that did need a longer upper brake line