You need two braided steel lines with stainless fittings. Two stainless banjo bolts, one double length banjo bolt, and seven copper washers.
Two lines are easier to bleed, look better and have less possible failure points.
I bought a set for my VFR from BGC Motorsport in Norfolk (01945 466690), or email
sales@bgcmotorsports.co.uk, for £46 including postage. Delivered next day.
I have no financial interest in the above company, they just provided good service at a fair price.
Strangely enough, I fitted Fireblade/storm four pot calipers to my VFR, cos the original two pot ones were crap.