These boots are manufactured in house at S&B with 4 plies of aramid reinforcement and extremely strong silicone rubber to last the lifetime of your vehicle. They are also backed by our lifetime warranty so you never have to worry about buying another boot kit again. All S&B Intercooler Boot Kits include the highest quality spring loaded T-Bolt clamps on the market so you don't have to reuse any of your worn out original ones.