Valve Spring

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.

Additional Information

Manley Valve Spring, SPRING-1.324 DOUBLE

Part Type

Engine Valve Spring Kit

• Manufactured from “super clean” Hi-Tensile Chrome Silicon steel
• Proprietary multi-step heat treating minimizes load loss
• Shot-peened to MIL spec for max fatigue life
• Tightly controlled open-end flatness reduces valve stem side loading
• Tip thickness designed to eliminate overload breakage

This is a group bundle consisting of:

Image	Qty	SKU	MFR SKU	UPC	Description
	1x	ico191201	191201	00840103400136	ICON 1in Cast Block Kit (3in Wide)
	1x	ico61002	61002	00840103424248	ICON 05-23 Ford F-250/F-350 Super Duty 2in Rear Bump Stop Spacer Kit
	1x	ico67004	67004	00840103405773	ICON 2011+ Ford F-250/F-350 Rear 12in U-Bolt Kit
	2x	ico36511	36511	00840103402383	ICON 1999+ Ford F-250/F-350 Super Duty 4WD 2.0 Steering Stabilizer (Dual Opposing)VS IR(Lift Needed)
	1x	ico65000	65000	00840103405599	ICON 2005+ Ford F-250/F-350 Dual Steering Stabilizer Kit
	2x	ico168507	168507	00840103423036	ICON 2008+ Ford F250/F350 Super Duty 2in Rear Leaf Spring Expansion Pack
	1x	ico64035	64035	00840103405520	ICON 05-16 Ford F-250/F-350 Adj Track Bar w/FK Rod End
	1x	ico37705CP	37705CP	00840103402512	ICON 1999+ Ford F-250/F-350 Super Duty 0-3in Rear 2.5 Series Shocks VS PB CDCV - Pair
	1x	ico61720C	61720C	00840103405421	ICON 2005+ Ford F-250/F-350 Super Duty 4WD 2.5-3in 2.5 Series VS RR CDCV Bolt-In Conversion 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