brake line length?

[00BUCKSHOT]

what formula do i use to know what length to buy now that i have these new bars ans risers with no brake line lol?i got 5 inch risers/ bars are 31inch width
5 inch rise center width is 8 1/2 inches pullback is 12 inches
bike is my 03 wideglide
help!!!!!!
glider help!!!!lol

 

[NEWHD74FAN]

You could use solid wire that keeps shape or have tape fabric ruler along the desired path and added couple of insches for "good meaure" and your done. More important is to get the right ends that mate to the existing "banjo" or interconnect link and caliper fittings. Also add another a few more inches based on the expected full extension of the forks travel.

I have used Drag Specialities, Russell and others' websites that have kits or single piece selections, lists of different lengths and application info to help.

http://www.dragspecialties.com/fatbook/17/305/7730348