USDM Red Silicone Intercooler Hose Kit (MMHOSE-SUB-INT4RD) by Mishimoto. Includes: 3 Silicone Hoses, 6 T-Bolt Clamps. Inner Hoses Diameters: 1.16in & 1.30in, 2.50in, 1.80in & 1.90in. Outer Hoses Diameters: 1.56in & 1.70in, 2.90in, 2.20in & 2.30in. Mishimoto's Silicone Intercooler Hoses are made from a combination of high-grade silicone and heat-resistant embedded fibers to handle high temperatures and additional boost pressure. Each hose has a smooth interior surface to deliver increased airflow to your intercooler. Mishimoto silicone hoses retain OEM fitment while providing increased pressure tolerance for the ultimate upgrade in performance and style.