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Ferrea engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Ferrea lineup with fast shipping and expert fitment support — order with confidence.
The Mitsubishi EVO X 4B11T engine is known for its tuning potential, but high-boost applications require a robust valvetrain. Ferrea 5.5mm Valve Locks are designed to handle the increased stress and high spring pressures required for performance camshafts. These high-strength steel locks provide a secure connection between your valves and retainers, preventing the common failures seen with stock components.
Don't let a failed valve lock ruin your engine build. Ferrea is a world leader in valvetrain technology, and these locks are a testament to their dedication to quality. By replacing your stock locks with these precision-engineered units, you ensure that your valve train remains stable under extreme conditions. Whether you are building a track car or a high-horsepower street machine, these locks provide the reliability you need to push your EVO X to the next level. Find all your essential performance engine parts at GGCRACING.
| Brand | Ferrea |
|---|---|
| Manufacturer part number | K10091 |
| GGC SKU | FERK10091 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 6 × 3 × 0.01 in |
|---|---|
| Shipping weight | 0.05 lb |
Universal fit — check measurements. Compare the dimensions and specifications on this page with your application before you order.
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