Rubber is out, silicone is in! Upgrade your old Impreza RS radiator hoses with the Mishimoto 1999-2001 Subaru Impreza RS radiator hose kit to provide your Impreza RS with an advancement in both style and reliability. This kit includes both the upper and lower Impreza RS radiator hoses, as well as four worm-gear clamps for ease of installation. Unlike the degradation-prone rubber hoses your Impreza RS currently has, every Mishimoto silicone hose is constructed from five layers of silicone with heat-resistant embedded fibers to provide unmatched durability, heat tolerance, and pressure tolerance. Whether you are entering your Impreza RS in the local rallycross, or lapping at your next track day, trust Mishimoto with all your Impreza RS parts. This silicone hose kit is available in black, blue, or red and, like all our Subaru parts, includes the Mishimoto Lifetime Warranty.