Valve Spring

The Manley Street Master series delivers upgraded valve springs and components designed specifically for street-driven performance builds. Made from high-tensile chrome silicon steel with precision shot-peening and heat treatment for long life, Street Master parts offer improved valve control, reduced stress, and dependable performance over factory components. Ideal for naturally aspirated and mildly modified engines, these components give you stronger valve-train stability and smoother operation for spirited street driving without race-only complexity.

Additional Information

Manley Valve Spring, SPRING-1.550 SINGLE

Part Type

Engine Valve Spring Kit

• Chrome silicon material
• Designed for low stress and long service life

This is a group bundle consisting of:

Image	Qty	SKU	MFR SKU	UPC	Description
	2x	ico96518	96518	00840103407302	ICON 04-08 Ford F-150 4WD / 2009+ Ford F-150 2/4WD Rear 2.0 Series Aluminum Shocks VS IR
	1x	ico98523DJ	98523DJ	840103423722	ICON 21-23 Ford F150 Billet Front Upper Control Arms DJ Pro Kit
	1x	ico91724	91724	00840103423678	ICON 21-23 Ford F150 4WD 3in Lift 2.5 VS IR Coilover Kit

Bundled group items may ship from multiple locations and could have slightly longer transit times if parts are sourced from different warehouses.

Images in this listing may include individual and/or group shots of the products included in the bundle. Please refer to the table to see a breakdown of what is included. Click on a SKU to see individual item details.

For details on the individual components in this bundle, click here.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information