A question that Viper Performance are frequently asked is “can I shrink or stretch the diameters of silicone hoses if I buy the wrong size?” The answer is simple “no.”

Hoses are sold by internal diameter not external diameter. You need to choose the hose with the internal diameter matching the outdoor diameter of the pipe you are wishing to connect to. Our hoses will not shrink and therefore you need to ensure you do not buy a hose which is too big. Avoid over clamping as this will simply damage the hose.

Watch this FAQ video to find out more about the importance of hose diameters.