Supertech Performance Dual Valve Spring Kit with Titanium Retainers for a Mitsubishi 4G63

Price range: £524.99 through £724.99
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Supertech performance dual valve spring kit with titanium retainers for the Mitsubishi 4G63 — designed for higher seat and open pressures, matched to aggressive cam profiles and higher RPM ceilings.

Direct OE fit and the right upgrade for boosted 4G63 builds running upgraded cams or high-flow heads. Payl8r 0% finance available on baskets over £500.

Stock & dispatch: check the live stock status shown above. UK in-stock items dispatch next working day on orders placed before 2pm. Drop-ship, special-order and made-to-order items have variable lead times — please contact our team on 01621 473023 or [email protected] for accurate timing before ordering.

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Spring Type

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SKU: N/A Category: Supertech Valvetrain

Description
Additional information

Description

Performance Dual Valve Spring Kit with Titanium Retainers for Mitsubishi 4G63
Our Performance Dual Valve Spring Kit with Titanium Retainers for a Mitsubishi 4G63 is built for Mitsubishi 4G63 applications—engineered for reliable valve control, RPM stability, and long-term durability.

Dual valve springs are designed for high-performance and racing builds that require increased seat and open pressure for superior valve control at elevated RPM.

Supertech valve springs are manufactured from premium Chrome Silicon alloys and heat-treated for fatigue resistance, while the included titanium retainers reduce valvetrain mass to improve control at higher engine speeds.

Features
High-tensile dual spring construction for increased control
Titanium retainers reduce mass and increase RPM capability
Computer-modeled spring profiles for harmonic stability
Designed to maintain consistent pressures under extreme conditions
CNC-machined components for exact fit and long-term reliability
Benefits
Superior valve control for high-lift/high-RPM applications
Reduced valve float and improved stability at speed
More consistent performance under sustained load
Durability proven in high-stress environments
Optimized for performance street and track builds

Additional information

Spring Type

Dual Valve Spring – 55lbs @ 36.40mm, Dual Valve Spring – 64lbs @ 35.65mm, Dual Valve Spring – 65lbs @ 36.40mm, Dual Valve Spring – 74lbs @ 35.65mm, Dual Valve Spring – 80lbs @ 39.60mm, Dual Valve Spring – 92lbs @ 39.60mm, Dual Valve Spring – 100lbs @ 39.00mm, Dual Valve Spring – 110lbs @ 38.10mm, Single Valve Spring – 76lbs @ 39.60mm, Beehive Valve Spring – 80lbs @ 38.60mm, Beehive Valve Spring – 98lbs @ 37.20mm