Beta Evo Silicone Radiator Hoses 4-StrokeSilicon Water Hose Kit, 4 Stroke SAMCO Silicone Radiator Hose Kit for Beta Rev Evo 4 strokes. Silicone hoses resist ozone and UV deterioration and are more puncture resistant. Our hoses are made from the finest European silicones specifically designed for automotive use, and our light blue SamTek lining used on all hoses has delivered outstanding resistance in the harshest environments over the last 12 years experience. Fits Rev Evo 4 stroke Trial