Does it matter if i extend the hydraulic brake line/hose of a motorcycle brake?? Present hose/line is about 3feet and want to get a 7feet hose? Will it affect performance? Thank you guys
No, Hydraulics works on a 1 to 1 basis, 1 unit in equals 1 unit out. More hose means more fluid.
If you are using rubber hose yes it can. Why the added length? It will take more fluid with the longer lines, and can get caught on a part of it ripping it out because of the additional length. The manufacturer used shorter lines for a reason.
Are you turning it into a chopper? As long as the hose is in good shape or is a braided steel/teflon lined line, no it won't. Both of my Kaws have a total of around 7 feet of front brake line when you add them all up. Now if the lines are old and spongy, they will swell when under pressure and reduce the braking power. Whatever you do, use manufacturered brake lines and don't go trying to fabricate your own, your life isn't worth the risk.