Replaces the restrictive sound suppression system located between the water box and hull exit of your 2017-19 GTR/GTR-X 230 watercraft. Improves engine performance by reducing back pressure and harmful detonation. Constructed from mandrel bent aluminum tubing with bead rolled ends to secure couplers. Tubing is powder coated to prevent corrosion. Includes high temperature silicone coupler and complete installation instructions.