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Manley Performance

Manley Performance

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

SKU: MAN221449-16

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

SKU: MAN221449-16

Valve Springs
A$1,882.88
LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.
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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 10:08:25

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
221449-16
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Springs
Product Attributes - UPC
807298023847
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 Outer Spring (in.)
1.440 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.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man221449-16
SFX Item ID 4930942
Supplier Item Code 4930942
Manufacturer SKU 221449-16
Manufacturer UPC 807298023847

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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