I'd agree, they don't work off suction do they? I thought they were just gravity fed to take up the piston movement as the pads wear down and ensure the fluid level doesnt drop below the master cylinder?I cannot see how they would work? Mind i used to run just a short length of clear pipe on my track bikes and checked the level and pads frequently..less to break when i repeatedly fell off!
Goose
Why did I buy a kick start....?????Oh yes, I hate myself.