Supertech Performance MAEVI-2304 Inconel Exhaust Valve Oversize - 1mm

The Supertech Performance MAEVI-2304 is a high-performance Inconel exhaust valve engineered for extreme heat resistance and sustained duty cycles. Manufactured from an Inconel-Nimonic nickel-base superalloy, this valve delivers the thermal fatigue resistance and hot strength required for turbocharged, supercharged, and endurance racing engine builds where standard stainless valves fall short.

Featuring a +1mm oversize head diameter of 31.00mm, a stem diameter of 5.48mm, and an overall length of 103.40mm, the MAEVI-2304 is a single-groove design with a dish-profile head. Swirl-polished heads and precision-ground seat faces promote stable flow and repeatable sealing, while hardened tips and a controlled stem finish support long-term guide life.

Key Features:

• Inconel-Nimonic superalloy construction for superior high-temperature strength and creep resistance
• Excellent oxidation and corrosion resistance in extreme exhaust environments
• Precision-ground seat faces for consistent, reliable sealing
• Swirl-polished heads for validated, stable flow characteristics
• Hardened valve tips with controlled stem finish to maximize guide life
• +1mm oversize head diameter for use with ported cylinder heads
• Single groove design; compatible with standard retainer and keeper configurations

Specifications:

• Head Diameter: 31.00mm (+1.0mm oversize)
• Head Profile: Dish
• Stem Diameter: 5.48mm
• Length: 103.40mm
• Material: Inconel-Nimonic
• Groove Type: Single Groove
• Valve Type: Exhaust

The MAEVI-2304 is an ideal choice for engine builders running boosted or endurance applications that demand sustained performance under elevated exhaust gas temperatures. For best results, pair with Supertech valve springs and retainers matched to your cam profile. Sold individually — order the quantity equal to the number of exhaust valves required for your engine build.