Manley Performance NexTek High Performance Valve Springs: Chrysler 300 (2005-2015)

Manley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs

Chrysler 6.4L HEMI V8

221439-16

Overview:

The Manley NexTek Series High Performance Valve Springs are engineered specifically for Chrysler 6.4L HEMI engines, designed to support valve lifts up to .650 inches. These valve springs are ideal for enthusiasts and professional builders seeking enhanced valvetrain stability and durability under high-performance conditions.

Whether you are upgrading your engine for street performance, track use, or serious racing applications, these springs provide the necessary strength and precision to maintain valve control at elevated RPMs and aggressive cam profiles. With Manley Performance’s reputation for quality and reliability, you can trust these springs to deliver consistent performance and longevity.

Key Features:

Manley’s NexTek Series valve springs incorporate advanced materials and design to optimize valvetrain function. Key features include:

• Designed for Chrysler 6.4L HEMI engines with a maximum valve lift capacity of .650 inches.
• Manufactured from high-quality spring steel for superior strength and fatigue resistance.
• Precision wound to exacting tolerances ensuring consistent spring rates and reliable valve control.
• Ideal for high-performance applications including street, strip, and track use.
• Single spring design optimized for aggressive camshafts and increased RPM capability.
• Engineered to reduce valve float and maintain valvetrain stability under demanding conditions.
• Compatible with factory retainers and valve train components for straightforward installation.

Construction & Design:

Manley’s valve springs are crafted using premium spring steel alloys, heat-treated for enhanced durability and resistance to fatigue. The NexTek Series springs feature a tightly controlled winding process that ensures uniform spring rates and consistent performance across all units.

This meticulous construction supports high valve lift and aggressive cam profiles without compromising valvetrain reliability. The springs are designed to work seamlessly with Chrysler’s 6.4L HEMI valvetrain geometry, providing precise valve timing and improved engine responsiveness.

Installation & Fitment:

These valve springs are direct replacements for the factory springs on Chrysler 6.4L HEMI engines. They fit OEM valve train components and retainers, allowing for a straightforward installation process.

No modifications such as cutting, drilling, or special tuning are required when installing these springs, making them an excellent upgrade for performance enthusiasts looking to enhance their engine’s capabilities without extensive machine work.

• Direct fit for Chrysler 6.4L HEMI engines
• Compatible with factory retainers and valve train hardware
• No special modifications or tuning necessary

What's Included:

• Single Manley NexTek Series High Performance Valve Spring (SPRING-1.311 SINGLE)

Ideal For:

• Performance enthusiasts upgrading Chrysler 6.4L HEMI engines
• Street and track drivers seeking improved valvetrain stability
• Engine builders requiring reliable springs for high valve lift applications
• Racers and tuners pushing aggressive camshaft profiles and higher RPM limits