I'm also looking to upgrade front brake line/hose.
I'm having a hard time sourcing the correct length and fittings.
I did in fact do my homework and measure the front line... 84cm/34in aprox.
What I do need a little help with is confirming the banjo fittings and bolts.
From what I have found the bolts are m10x1.25... no reference in the manual, but several shops and users claim that nissin/suzuki combo use that thread.
For the banjo fittings I would say the master cylinder end is a 20ºx20º bend and the caliper end is 20º.
Also, the washers are regular or with the rubber interior?
Any chance someone could confirm this? Or if you have installed a new line with other fittings that still work? (maybe a slightly longer line with straight fittings?)