This Ferrea Dual Valve Spring Kit is an endurance-spec upgrade for the Acura K20 engine, designed to maintain consistent valve control and resist load loss over long, high-rpm running. Sold as a complete kit.
| Brand | Ferrea |
| Type | Dual valve spring kit (endurance) |
| Application | Acura K20 |
| Part Number | KT4003 |
| Use | Endurance / high-rpm valvetrain upgrade |
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