"Designed for off-road trucks and performance exhaust upgrades, this JOYTRACE system enables precision alignment where factory hangers fail. The ​9.65-inch swivel clamps with 3-inch inner diameter​ provide ±15° rotation range – essential for lifted vehicles with drivetrain interference. ​Engineering Validation​ ​Material Certifications: Zinc steel rods exceed 720-hour ASTM B117 salt fog resistance (vs. standard 480-hour) ​Structural Tolerance: Bend rods withstand repeated 50° deflection at 1200°F without deformation ​EPDM Formulation: 45±5 Shore A hardness rubber rated for 392°F continuous exposure"