Engines and Components› Camshafts and Valvetrain
Manley Performance
Manley 16pc NexTek Drag Race Valve Springs 1.650in O.D. Kit
SKU: M004 221454-16
Moderate — 2–4 hours
Description
Part #: 221454-16
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.
Valve Spring - NexTek - Dual Spring - 635 lb/in Spring Rate - 1.105 in Coil Bind - 1.650 in OD - Set of 16
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
Fitment
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Specifications
| Brand | Manley Performance |
| Part Number | M004 221454-16 |
Buy with Confidence
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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