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Engines and Components› Camshafts and Valvetrain

Manley Performance

SPRING-1.677 TRIPLE

$945.41 $850.87 Save $94.54

SKU: M004 221449-16

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In Stock
Ships by Oct 5
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$100 Minimum Order
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Overview

Manley Nextek Drag Race Valve Springs (MPN 221449-16) are high-performance triple valve springs designed for drag racing. These springs feature a spring rate of 720 lbs/in and a coil bind of 1.142 inches. The outer diameter is 1.677 inches, and they are sold in a set of 16 for specific engine and cylinder head applications.
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Part #: 221449-16

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-1.677 TRIPLE.

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.

Fitment

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Specifications

BrandManley Performance
Part NumberM004 221449-16
5,000+ Trusted brands
1M+ Enthusiasts
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(760) 282-4645 hello@motormia.co

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Returns & Fitment

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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Shipping

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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