• High-temperature strength and creep resistance for sustained EGT.
• Excellent oxidation and corrosion resistance in exhaust environments.
• Swirl-polished heads and validated profiles for stable flow.
• Hardened tips and controlled stem finish to support guide life.
• Available in OE diameter and oversize options where supported.

Nickel-Based Superalloy

Inconel-type superalloy selected for hot strength, resistance to thermal fatigue, and long-term stability under boost and track conditions.

Seat & Stem Finish

• Precision-ground seat faces for repeatable sealing.
• Controlled stem finish for consistent stem-to-guide clearance.
• Swirl-polished heads to smooth boundary layer and support flow.

Heat Treatment

Application-specific heat treatment processes enhance strength and wear performance in high-heat service.

Geometry

• Flat, dished, and tulip head shapes by application.
• Undercut or straight stems as validated.

Sizes

• OE diameter for stock ports and chambers.
• Oversize options for ported heads where supported.

Compatibility

• Pair with Supertech springs and retainers matched to your cam profile.
• Works with performance seat and guide materials specified by your head builder.

Turbo / Supercharged

Ideal for engines that see elevated exhaust gas temperatures during extended boost or competition.

Endurance / Track Duty

Designed to maintain strength and sealing under long sessions and repeated heat cycles.

• Measure guide ID and set stem-to-guide clearance for superalloy stems.
• Cut seats to correct angles and contact width; verify concentricity and contact placement.
• Check installed height, seat pressure, coil bind, and retainer-to-seal clearance.
• Verify piston-to-valve clearance at intended lift and cam timing.
• Use spring pressures appropriate for your cam and expected RPM.

When should I choose Inconel exhaust valves?

Choose Inconel for turbocharged or endurance builds that see sustained high EGT or prolonged track use. It offers greater hot strength than stainless in these conditions.

Do Inconel valves need additional coatings?

Inconel is selected for high-heat strength; additional surface processes are application-specific. Follow your head builder’s recommendation.

Are oversize Inconel valves available?

Many applications offer OE diameter and oversize options. Verify fitment, seat throat, and clearance before ordering.

Do I need upgraded springs?

Use springs matched to your cam profile and valve mass to maintain valve control at RPM.