BEND RADIUS MINIMUM is the smallest bend radius, a length expressed in inches or mm typically, at which our silicone hose can be used without it kinking. The smaller the bend radius, the greater the material flexibility, this may be a function of the durometer but mainly the ID of the hose, in other words smaller ID's have smaller bend radii. The graphic above illustrates a cable but the same applies for a hose, in this case the cable has a seven-centimeter bend radius measured from the inside curvature of the hose to the centerline.  Each of the heater hose of our GreenJay line lists a minimum bend radius for you to be aware of.   Our Jay20 silicone hoses offer some of the greatest flexibility and resiliency possible for all your toughest engine applications!