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Engines and Components› Camshafts and Valvetrain

Manley Performance

Manley NexTek Series 1.640 OD .8602 ID .900 Lift Sportsman and Bracket Classes Valve Springs

$455.27 $409.74 Save $45.53

SKU: M004 221425-16

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Overview

The Manley Performance NexTek Series Valve Springs are a set of 16 valve springs manufactured from super-clean, high-tensile chrome silicon steel. They are designed for Sportsman and Bracket Classes Drag Race applications, featuring proprietary multi-step heat treating and shot-peening for maximum fatigue life and minimal load loss. These valve springs have an outside diameter of 1.640", an inside diameter of .8602", and can support a lift of .900".
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Part #: 221425-16

From drag strips to short track and endurance circuits, the Manley NexTek (R) series is engineered for serious racers. NexTek (R) 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.

Manley Valve Spring, SPRING-1.640 DOUBLE.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandManley Performance
Part NumberM004 221425-16

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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