Calas Performance Yamaha 30mm Oversize Inconel Exhaust Valve Set

Calas Performance Yamaha 30mm Oversize Inconel Exhaust Valve Set is a 1mm oversize Inconel exhaust valve set built for Yamaha WaveRunner performance engine builds that need dependable sealing, heat control, and stable operation at elevated RPM. It is designed for riders and builders upgrading a stock or modified PWC engine where standard valve hardware is no longer the right match for higher cylinder pressure and harder use.

The Inconel construction helps support durability in demanding marine performance environments, while the performance-oriented design gives engine builders a stronger foundation for recreational performance, high-boost, and race-focused setups. Use this valve set when refreshing the cylinder head, supporting a camshaft or valvetrain upgrade, or building a more reliable high-RPM Sea-Doo or Yamaha engine package.

Calas Performance lists this product for fitment-first ordering, so confirm compatibility with your year, make, model, and engine setup before purchase.