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Manley Performance

Manley Performance

Manley NexTek Valve Springs 221449P-16 Springs, Triple, 1.677 in. Outside Diameter, 720 lbs./in. Rate, 1.142 in. Coil Bind Height, Set of 16

SKU: MAN221449P-16

Valve Springs
Manley NexTek Valve Springs 221449P-16 Springs, Triple, 1.677 in. Outside Diameter, 720 lbs./in. Rate, 1.142 in. Coil Bind Height, Set of 16
Manley Performance

Manley Performance

Manley NexTek Valve Springs 221449P-16 Springs, Triple, 1.677 in. Outside Diameter, 720 lbs./in. Rate, 1.142 in. Coil Bind Height, Set of 16

SKU: MAN221449P-16

Valve Springs
A$2,590.44
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: 2026-10-12 11:21:32

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
221449P-16
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Springs
Product Attributes - UPC
807298023861
Product Attributes - Valve Spring Style
Standard
Product Attributes - Number of Springs Per Valve
Triple
Product Attributes - Maximum Valve Lift (in.)
1.000 in.
Product Attributes - Retainers Included
No
Product Attributes - Outside Diameter of Outer Spring (in.)
1.677 in.
Product Attributes - Coil Bind Height (in.)
1.142 in.
Product Attributes - Damper Spring Included
No
Product Attributes - Spring Rate (lbs./in.)
720 lbs./in.
Product Attributes - Inside Diameter of Inner Spring (in.)
0.632 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 man221449P-16
SFX Item ID 4933226
Supplier Item Code 4933226
Manufacturer SKU 221449P-16
Manufacturer UPC 807298023861

Compatibility

Application Data
  • Installed Height (in.)2.200 in.
    Seat Pressure at Installed Height (lbs.)350 lbs.
    Open Height (in.)(application)1.200
    Open Pressure (lbs.)1,070 lbs.

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