This Brian Tooley Racing GM Gen 5 LT4 valve spring kit features .685" lift for enhanced performance. The kit is designed for high-pressure applications and comes pre-load set to ensure optimum performance. Enjoy improved reliability and consistent power with this industry-leading upgrade.

Contents of spring kit:

- SP010-1 valve spring (qty 16)

- SR006-8 titanium intake retainers (qty 1)

- SR008-8 titanium exhaust retainers (qty 1)

- SL520060-16 valve spring locators (qty 1)

- SS030-1 valve spring shims (qty 8)

- VL7°8MMBLK-32 valve locks (qty 1)