Manley 26351148KS NexTek GM LS Dual Valve Spring Kit with Titanium Retainers

The Manley 26351148KS NexTek dual valve spring kit is a complete valvetrain upgrade solution designed for GM LS engine builders seeking premium performance and reliability. This comprehensive kit includes everything needed for a professional valve spring installation, featuring high-quality components engineered to work together seamlessly.

Complete Kit Includes:

• 23611-16 Titanium Retainers for reduced valvetrain weight
• 13098-16 7-Degree Valve Locks for precise retention
• 24042-16 Valve Seals for proper oil control
• 42348-16 Spring Seats for correct spring positioning

Valve Spring Specifications:

• Maximum camshaft lift: 0.700 inches
• Outer diameter: 1.340 inches
• Inner diameter: 0.726 inches
• Spring rate: 394 lbs./in.
• Installed pressure: 170 lbs. @ 1.810 inches
• Open pressure: 446-450 lbs. @ 1.110 inches
• Coil bind height: 1.050 inches

Manley NexTek valve springs are manufactured from specially processed premium-grade chrome silicon alloy that is virtually free of impurities or surface irregularities. The springs undergo multiple-step heat treatment to minimize load loss and are shot peened for maximum fatigue life. The fully polished finish reduces friction and improves durability, making these springs ideal for street/strip applications, bracket racing, and high-performance street engines with aggressive camshaft profiles.

This complete kit offers significant savings compared to purchasing components separately, while ensuring all valvetrain components are properly matched and tested to work together. Suitable for GM LS-series engines in applications ranging from performance street builds to serious racing engines.