Just installed a Spiegler kit on a 2002.
On the ride home last week my front brake lever became "spongy".
At stops the lever would continue backward toward the grip... not good.
The rear brakes were functioning normally.
Got home safely and parked it for the evening. The next day I began the investigation.
I hopped on the bike and started walking it out of the garage, pulled the lever and it went to the grip.
Turned on the key and tried it again. The brakes locked solid as if I had pulled into a puddle of superglue. The hose must have collapsed internally at that point keeping pressure in the system.
I began tracing the lines for the front brake.
The hose from the front handlebar master cylinder had a hole and was leaking about 1" from the steering head connection to the hard line.
Upon dissection of the offending line I found the inner hose to be disintegrating. Rolling a piece of the hose between your fingers would turn it into a smear of black goo.
I made the decision to replace all the stock lines on the bike, age of bike as well as the line failure made the decision easy.
This site has been a godsend of great information on the bleeding procedure. It is not as daunting or difficult as it is made out to be. More on that in a minute.
I ordered the Spiegler kit direct and they had it to me the NEXT day.
It was well labeled, included all the crush washers and a tool to change the indexing of the ends.
I did not need to adjust the ends at all they all fit perfectly right out of the box.
There were no problems with fitment of the kit, no modification of the stock hanging hardware or brackets were needed.
I replaced the lines wet, filled the reservoirs and let gravity fill the lines and push out the extra air or any possible contamination as I installed the banjo bolts. Messy, but I believe helpful. Keep plenty of cans of break cleaner on hand.
Following the instruction found elsewhere on this site I dove into the bleed procedure, again a pretty straight forward job.
The front control circuit had a "bunch" of crud in it. Looked like pepper flecks, I believe it was the particulate matter from the disintegrating brake line.
I used about 2 quarts of Dot 4 and performed the bleed procedure no less than half a dozen times on that circuit to get all of that junk out.
The back control circuit change was a carbon copy of the front with the positive exception of not dealing with the rubber particles in the system or needing nearly as many bleeds.
I cut the other stock lines open when I was done. None seemed to have the problem of the failed line.
I don't have an explanation for the bad line, the rubber was horribly degraded.
The brakes feel great now, very solid and nothing weird or unexpected while riding.
The lines (what you can see of them) look beautiful.
The added peace of mind I have now is well worth the moderate price $250 for the Spiegler kit.