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Manley Performance

Manley Performance

Manley NexTek Valve Springs 221424-1 Spring, Dual, 1.640 in. Outside Diameter, 647 lbs./in. Rate, 1.070 in. Coil Bind Height, Each

SKU: MAN221424-1

Valve Springs
Manley NexTek Valve Springs 221424-1 Spring, Dual, 1.640 in. Outside Diameter, 647 lbs./in. Rate, 1.070 in. Coil Bind Height, Each
Manley Performance

Manley Performance

Manley NexTek Valve Springs 221424-1 Spring, Dual, 1.640 in. Outside Diameter, 647 lbs./in. Rate, 1.070 in. Coil Bind Height, Each

SKU: MAN221424-1

Valve Springs
A$57.81
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

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

1.640 Dual Valve Spring

Data: v4.2 - Upd: 2026-10-14 10:06:56

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
221424-1
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Springs
Product Attributes - UPC
807298023595
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 Outer Spring (in.)
1.185 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 man221424-1
SFX Item ID 4932275
Supplier Item Code 4932275
Manufacturer SKU 221424-1
Manufacturer UPC 807298023595

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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