Home / Shop / Manley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs .650 Max Lift - Single

Manley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs .650 Max Lift - Single

SKU: MAN221439-1

Valve Springs

MAN Valve Spring Kits

Manley Performance

Manley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs .650 Max Lift - Single

SKU: MAN221439-1

Valve Springs

MAN Valve Spring Kits

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.

Part Type

Engine Valve Spring

Data: v4.2 - Upd: 2026-10-12 07:10:31

Features

Manufactured from “super clean” Hi-Tensile Chrome Silicon steel
Proprietary multi-step heat treating minimizes load loss
Shot-peened to MIL spec for max fatigue life
Tightly controlled open-end flatness reduces valve stem side loading
Tip thickness designed to eliminate overload breakage

Specifications

Product Attributes - Brand: Manley
Product Attributes - Manufacturer's Part Number: 221439-1
Product Attributes - Part Type: Valve Springs
Product Attributes - UPC: 00807298023410

Reference Information

Brand Name/s	Manley Performance
StreetFX SKU	man221439-1
SFX Item ID	4061204
Supplier Item Code	4061204
Manufacturer SKU	221439-1
Manufacturer UPC	807298023410
Alternative References	6.4L