Silicone Radiator COOLANT HOSE KIT for YAMAHA YZF-R1 2004 2005 2006 04 05 06 BLACK Made of High Quality Silicone For High Temperature and High Boost Application. 3-Ply Nylon for Strong Reinforcement / Full 4.5mm Thickness Working pressure 85 PSI / Burst pressure 245 PSI Withstands Operating Temperatures from -65F to 500F Degrees Fahrenheit