Ferrea Competition Plus valves are known as the most reliable extreme valve in the industry.

For the production of valves we use special quality standards for the aerospace industry, including EV8-Z18, which provides high tensile strength.

An exclusive two-stage, slow forging process ensures proper flow and virtually eliminates any damage to the material structure.

The valves are then heat treated and tempered within 48 hours, which is the key foundation of our molecular integrity.

For Toyota B58 Turbo Single Valve Springs
Kit includes the following:
- Single Springs #S10177 (24)
- Titanium Retainers (Exhaust side) #E11146 (12)
- Titanium Retainers (Intake side) #E11147 (12)
- Seat Locators (Exhaust side) #SL1175 (12)
- Seat Locators (Intake side) #SL1176 (12)
* Use new OEM valve locks