When testing volumetric expansion, Goodridge found that standard OE-type rubber brake hose expanded by 0.136 cc/ft at 1,000 psi, 0.150 cc/ft at 1,500 psi, and 0.290 cc/ft at 2,900 psi, whereas the ...

So my money was sent and the brake lines arrived promptly in the original box with all the included parts to replace all of the rubber flex hoses for both front and rear brakes on my BMW R1150GS ...

Flexible brake lines on road vehicles are governed by Federal Motor Vehicle Safety Standard 106 which specifies the construction and test requirements for hydraulic hose assemblies.