My V50 II cafe is plumbed entirely with DIY Magnum lines and fittings sourced from MG Cycle. They are very easy to fit, assemble tightly and mine have never leaked or shown any other anomaly. The beauty of DIY lines is that you can - at home in your shop - configure them and route them any way you want, whereas off-the-shelf lines always follow the OEM routing. I was able to eliminate the hard tubular line running from rear MC to left front brake, then reroute it to free up a luggage compartment where the (huge, outdated, lead acid) battery used to live. Then I was able to create a fitting to mount at the highest point on the linked circuit to bleed with striking ease the linked brakes, something that has often bedeviled and frustrated me in the past. This fitting has two 90-degree banjos and a manifold which holds a bleeder. Filling the linked circuit from the calipers, the bleeder fitting makes getting a firm pedal on the linked circuit a 10-minute-or-less job. Extremely pleased with this little gizmo, made possible by the adaptability of DIY lines.
While the Magnum lines are a very good choice, there is a possibly better alternative: Goodridge lines and fittings from Revival Cycles. I have used these on a hydraulic clutch for my KTM 390 Duke, and they are excellent. Smaller in diameter than the Magnums, they are easier to route through tight passages and tend to have less twisting effect/resistance. The product description from Revival claims several advantages deriving from the smaller diameter.
https://revivalcycles.com/collections/braking-hydraulic-lines-and-fittingsEither way, I believe DIY lines are the preferable way to go for the home mechanic. Assembled correctly, they are, IMO, just as reliable as store-bought lines.
