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Manley NexTek Valve Springs 221424P-16 Springs, Dual, 1.640 in. Outside Diameter, 647 lbs./in. Rate, 1.070 in. Coil Bind Height, Set of 16

SKU: MAN221424P-16

Valve Springs

Manley NexTek Valve Springs 221424P-16 Springs, Dual, 1.640 in. Outside Diameter, 647 lbs./in. Rate, 1.070 in. Coil Bind Height, Set of 16

SKU: MAN221424P-16

Valve Springs
A$1,422.00
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 Kit

Data: v4.2 - Upd: 2026-10-14 10:03:30

Features

  • Available in polished versions to reduce friction, improve fatigue life, and minimize load loss
  • Better valve train stability and component life
  • Ideally suited for Sportsman Drag Racing applications
  • Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
221424P-16
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Springs
Product Attributes - UPC
807298033495
Product Attributes - Valve Spring Style
Standard
Product Attributes - Number of Springs Per Valve
Dual
Product Attributes - Maximum Valve Lift (in.)
0.880 in.
Product Attributes - Retainers Included
No
Product Attributes - Outside Diameter of Outer Spring (in.)
1.640 in.
Product Attributes - Coil Bind Height (in.)
1.070 in.
Product Attributes - Damper Spring Included
No
Product Attributes - Spring Rate (lbs./in.)
647 lbs./in.
Product Attributes - Inside Diameter of Inner Spring (in.)
0.860 in.
Product Attributes - Locks Included
No
Product Attributes - Valve Stem Seals Included
No
Product Attributes - Valve Springs Coated
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a set of 16.
Product Attributes - Notes
Polished.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man221424P-16
SFX Item ID 4934126
Supplier Item Code 4934126
Manufacturer SKU 221424P-16
Manufacturer UPC 807298033495

Compatibility

Application Data
  • Installed Height (in.)2.000 in.
    Seat Pressure at Installed Height (lbs.)250 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)800 lbs.

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