Tomei - Subaru 02-14 WRX / 04-21 STI -Race Spec +1mm Cylinder Head Valve Set
The Tomei Racing Valves are designed to handle the perils of high-performance driving conditions. Tomei has designed these valves with a waisted stem which allows a greater volume of air and gases to enter and exit the combustion chamber as the valve extends.
Each valve has been designed and precision machined specifically for your application. The head, face, stem, and lock groove have been optimized to ensure proper sealing, efficiency, and durability.
Tomei manufactures their intake valves from SUH35 heat-resistant steel, and they are coated to improve resistance to heat, wear, and corrosion. The exhaust valves are made from Inconel 751 nickel-based alloy materials and can withstand temperatures of up to 1000° C.
The waisted stem allows a greater volume of air/gases to enter and exit the combustion chamber as the valve extends.
The oversized head diameter is designed specifically for each application, significantly improving the flow rate. (Excl. FA20)
Each valve is designed and precision machined specifically for the intended engine/application. The head, face, stem, and lock groove designs have also been optimized to enhance sealing performance, efficiency, and durability.
The intake valves are made using SUH35 HEAT RESISTANT STEEL which is more commonly used to make exhaust valves. These are then coated with a special formula that further improves the valves' resistance to heat, wear, and corrosion.
*Sold as an IN&EX complete set
- Brand: Tomei
- Length: Intake 104.35mm / Exhaust 104.70mm
- Location: Intake and Exhaust
- Machining Required: Yes
- Material: Inconel / SUH35 Heat Resistant Steel
- QTY: 16
- Size: 1mm Oversized
- Mfgr. Warranty: No Warranty
- Condition: New Product
- Subaru 02-14 WRX
- Subaru 04-21 STI