Manley 16pc NexTek Drag Race Valve Springs 1.650in O.D. Kit

SKU: MAN221454-16

Valve Springs

MAN Valve Spring Kits

Manley Performance

Manley 16pc NexTek Drag Race Valve Springs 1.650in O.D. Kit

SKU: MAN221454-16

Valve Springs

MAN Valve Spring Kits

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

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Description

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.

Part Type

Engine Valve Spring Kit

Data: v4.2 - Upd: 2026-09-29 08:00:34

Features

Available in polished versions to reduce friction, improve fatigue life, and minimize load loss
Better valve train stability and component life
Ideally suited for Sportsman Drag Racing applications
Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities

Specifications

Product Attributes - Brand: Manley
Product Attributes - Manufacturer's Part Number: 221454-16
Product Attributes - Part Type: Valve Springs
Product Attributes - Product Line: Manley NexTek Valve Springs
Product Attributes - UPC: 807298076553
Product Attributes - Valve Spring Style: Standard
Product Attributes - Number of Springs Per Valve: Dual
Product Attributes - Maximum Valve Lift (in.): 0.850 in.
Product Attributes - Retainers Included: No
Product Attributes - Outside Diameter of Outer Spring (in.): 1.650 in.
Product Attributes - Coil Bind Height (in.): 1.105 in.
Product Attributes - Damper Spring Included: No
Product Attributes - Spring Rate (lbs./in.): 635 lbs./in.
Product Attributes - Inside Diameter of Inner Spring (in.): 0.855 in.
Product Attributes - Locks Included: No
Product Attributes - Valve Stem Seals Included: No
Product Attributes - Valve Springs Coated: No
Product Attributes - Quantity: Sold as a set of 16.
Product Attributes - Notes: 0.850 in. maximum valve lift.
Product Attributes - Installed Height (in.): 2.000 in.
Product Attributes - Seat Pressure at Installed Height (lbs.): 288 lbs.
Product Attributes - Open Height (in.)(application): 1.150
Product Attributes - Open Pressure (lbs.): 825 lbs.
Product Attributes - Remanufactured: No

Reference Information

Brand Name/s	Manley Performance
StreetFX SKU	man221454-16
SFX Item ID	4060806
Supplier Item Code	4060806
Manufacturer SKU	221454-16
Manufacturer UPC	807298076553
Alternative References	16pc, 1.650in