Corrugated Blue Very Hi Temperature Silicone Rubber Wet Exhaust Hose, 3.00 Inch ID, Up To PSI

The 350 degree figure is the maximum continuous operating temperature, not a short-burst peak. Silicone rubber handles heat differently than standard EPDM, and Trident rates this line at 350F sustained because the formulation is built for it. The 10 year warranty they back it with reflects that confidence. Just make sure it's installed far enough downstream from the water injection point so the hose itself isn't sitting in the hottest zone of the system.

For tight bends, the corrugated bellows-style construction is meant to give you more flexibility and a tighter bend radius than a straight exhaust hose. Installation still matters though. Support it well along the run and make sure it does not kink.