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Manley NexTek Valve Springs 221425-1 Springs, Dual, 1.640 in. Outside Diameter, 604 lbs./in. Rate, 1.150 in. Coil Bind Height, Each

SKU: MAN221425-1

Valve Springs

Manley NexTek Valve Springs 221425-1 Springs, Dual, 1.640 in. Outside Diameter, 604 lbs./in. Rate, 1.150 in. Coil Bind Height, Each

SKU: MAN221425-1

Valve Springs
A$63.96
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
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Description

These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life. They feature a proprietary, multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation. The Manley NexTek valve springs are smaller diameter and lightweight, allowing engines to rev higher faster. They have an extended tip thickness designed to eliminate overload breakage, and their tightly controlled open-end flatness reduces valve stem side loading.

Part Type

Valve Springs

Data: v4.2 - Upd: 2026-10-14 10:09:34

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
221425-1
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Springs
Product Attributes - UPC
807298023892
Product Attributes - Valve Spring Style
Standard
Product Attributes - Number of Springs Per Valve
Dual
Product Attributes - Maximum Valve Lift (in.)
0.900 in.
Product Attributes - Retainers Included
No
Product Attributes - Outside Diameter of Outer Spring (in.)
1.640 in.
Product Attributes - Coil Bind Height (in.)
1.150 in.
Product Attributes - Damper Spring Included
No
Product Attributes - Spring Rate (lbs./in.)
604 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 individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man221425-1
SFX Item ID 4930095
Supplier Item Code 4930095
Manufacturer SKU 221425-1
Manufacturer UPC 807298023892

Compatibility

Application Data
  • Installed Height (in.)2.100 in.
    Seat Pressure at Installed Height (lbs.)280 lbs.
    Open Height (in.)(application)1.250
    Open Pressure (lbs.)794 lbs.

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