What is the purpose of a dual valve spring?

Dual valve springs are used in performance engines to provide increased stability and prevent valve float at higher RPMs. The inner and outer springs work together to control valve motion more precisely than a single spring.

What does the spring pressure range indicate?

The spring pressure range, from 1.225 inches to 1.570 inches in this case, refers to the pressure the spring exerts at different states of compression. This spec is crucial for matching the spring to the camshaft profile and engine's needs.

Can I use just one of these springs?

This product is a single dual valve spring. It is intended to be used as part of a matched set for a complete dual spring application, not as a standalone solution for all valves.

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Specifications

Brand: Ferrea
Part #: S11016-1

Ferrea 1.225in to 1.570in Dia 1.153/1.56 OD 0.82/1.155 ID Dual Valve Spring- Single (Drop Ship Only)

Name: Ferrea 1.225in to 1.570in Dia 1.153/1.56 OD 0.82/1.155 ID Dual Valve Spring- Single (Drop Ship Only)
Brand: Ferrea
SKU: ferrea-ferrea-1-225in-to-1-570in-dia-1-153-1-56-od-0-82-1-155-id-dual-valve-spri-t14-419220
Price: 55.56 USD
Availability: BackOrder

$55.56

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Ferrea dual valve spring with 1.225in to 1.570in diameter. Drop ship only.

Key Features

This is a single dual valve spring from Ferrea.
Features an outer diameter of 1.153/1.56 inches and an inner diameter of 0.82/1.155 inches.
Designed for a spring pressure range of 1.225 inches to 1.570 inches.
Built with well-built materials to handle engine stress.
This part is drop ship only.

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About this part

Product Details

Starting with a 1.153/1.56 inch outer diameter and 0.82/1.155 inch inner diameter, this Ferrea dual valve spring is built for demanding engine builds. It handles a spring pressure range from 1.225 inches to 1.570 inches, ensuring your valves close reliably under high RPM conditions.

Ferrea uses well-built materials to create springs that can withstand the stress of repeated opening and closing. This single spring is designed to work as part of a dual spring setup, providing the necessary support to prevent valve float and maintain proper valve train geometry, especially in performance applications where stock springs might not be sufficient.