Supertech Performance SEAEVI-3160S Sea-Doo Inconel Exhaust Valve Single Groove

The Supertech Performance SEAEVI-3160S is a high-performance Inconel exhaust valve engineered for Sea-Doo 4-TEC and Rotax 1630 ACE engines. Designed as a direct drop-in replacement for the OEM exhaust valve, this single-groove valve requires no machining of the cylinder head for installation.

Key Features:

• Material: Inconel — a nickel-base superalloy (Inconel 751 or Nimonic 80A) specifically chosen for its ability to withstand extreme heat and high-stress engine environments
• Head Diameter: 31.00 mm
• Stem Diameter: 5.95 mm
• Overall Length: 90.70 mm
• Face Style: Dished
• Groove Type: Single groove — must be used with Supertech keeper KPR-6S/7
• Drop-in OEM replacement — no cylinder head machining required
• Engineered for high boost, high RPM, and long-term durability

Supertech applies over 30 years of racing valve development expertise to every valve they produce, utilizing advanced testing methods including ultrasonic inspection, X-ray, laser measurement, and Finite Element Analysis (FEA) to ensure consistent quality and performance. The SEAEVI-3160S is compatible with the Rotax 1630 ACE engine platform and is sold individually. For a complete valve replacement, it pairs with the Supertech SEAIVC-3860S intake valve.