LS Dual Spring & Titanium Retainer Kit VTKLST1

VTKLST1 Kit Contains:
4207X-16 - Valve Springs (spring pressure 155lbs @ 1.800" and 385lbs @ .500" lift)
TR435-16 - Titanium Retainers
10701-16 - Valve Locks
VSV900VTEX-16 - Valve Stem Seals

VTKLS9, VTKLST, VTKLST1, VTKLST2 Spring kits are recommended for use with High RPM engines that require higher seat pressure. Maximum lift ranging from .650" to .750". 

Ultra Lightweight High RPM Titanium Retainers are suited for high revving engines with maximum power. Can be used for street applications but will not have the life expectancy of a Chrome Moly Retainer.