Katech LT4 .680 Lift Dual Spring Kit - Tool Steel

Introducing the Katech Premium LT4 .680 Lift Dual Valve Spring Kit with PSI-1512ML Springs and H13 Tool Steel Retainers – a high-performance solution made entirely in the USA. Elevate your engine's performance with precision engineering and top-quality materials.

Key Features:

PSI-1512ML Valve Springs:

The heart of this kit lies in the PSI-1512ML valve springs, designed for maximum durability and performance.
PSI-1512ML springs feature the innovative Max Life treatment, ensuring extended lifespan and consistent performance under demanding conditions.
Engineered to meet the highest standards, these valve springs provide optimal valve control and reliability.

Katech H13 Tool Steel Retainers:

Complementing the PSI-1512ML springs are the Katech H13 tool steel retainers, known for their exceptional strength and durability.
Crafted from premium H13 tool steel, these retainers offer superior wear resistance and toughness compared to Titanium, ensuring longevity in high-stress environments.
Precision machined to exact specifications, the H13 tool steel retainers are lighter than OEM retainers and contribute to enhanced valve stability and overall engine efficiency.

Made in the USA:

We take pride in the fact that every component of this valve spring kit is made in the United States, adhering to the highest quality standards.
By choosing Katech, you are not only investing in superior performance and exceptional durability but also supporting American craftsmanship.


This kit includes:

PSI-1512ML - Valve Springs - Qty:16
KAT-7715 - H13 Tool Steel Retainer - Qty:8
KAT-7716 - H13 Tool Steel Retainer - Qty:8
KAT-7657-R01 - Steel Spring Locator - Qty:8
KAT-7536-R01 - Steel Spring Locator - Qty:8
KAT-7481 - Viton Valve Seal - Qty:16

Spring specs:
130 lbs @ 1.800"
395 lbs @ 1.150"
Coil bind @ 1.070"

This is a drop-in kit for all Gen-V LT heads other than LT4. Please see KAT-A7921-TS for LT4 fitment.

Requires use of OEM GM valve locks.