The Toyota MR2 turbo silicone hose kits are made with a dual layer combining high grade silicone and heat-resistant embedded fibers to provide efficient heat reduction and increased pressure tolerance, all with designed and engineered for a direct OEM fit. The perfect replacement to the stock MR2 hoses!Direct fit for 1990-1999 Toyota MR2 TurboINNER DIAMETER: Hose 1: 1.18" Hose 2: 1.16" Hose 3: 1.17" Hose 4: 1.16" Hose 5: 1.16"OUTER DIAMETER: Hose 1: 1.56" Hose 2: 1.54" Hose 3: 1.55" Hose 4: 1.54" Hose 5: 1.54"High grade silicone and heat-resistant embedded fibers feature max temp of 330°FMishimoto Lifetime Warranty