Silicone Radiator Hose for YAMAHA YZ450F YZF450 YZF 450 2010-2011 10 11 blue Full 4.5mm Thickness Made of High Quality Silicone 3-Ply Nylon for Strong Reinforcement For High Temperature and High Boost Application. Withstands Operating Temperatures from -65F to 500F Degrees Fahrenheit