Manley Pro Stock / Fuel / Alcohol NexTek Series Drag Race Valve Springs

SKU: MAN221450-16

Valve Springs

MAN Valve Spring Kits...

Manley Performance

Manley Pro Stock / Fuel / Alcohol NexTek Series Drag Race Valve Springs

SKU: MAN221450-16

Valve Springs

MAN Valve Spring Kits...

Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

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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: 2026-10-13 17:07:35

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: 221450-16
Product Attributes - Part Type: Valve Springs
Product Attributes - Product Line: Manley NexTek Valve Springs
Product Attributes - UPC: 807298033457
Product Attributes - Valve Spring Style: Standard
Product Attributes - Number of Springs Per Valve: Triple
Product Attributes - Maximum Valve Lift (in.): 1.000 in.
Product Attributes - Retainers Included: No
Product Attributes - Outside Diameter of Outer Spring (in.): 1.677 in.
Product Attributes - Coil Bind Height (in.): 1.142 in.
Product Attributes - Damper Spring Included: No
Product Attributes - Spring Rate (lbs./in.): 770 lbs./in.
Product Attributes - Inside Diameter of Inner Spring (in.): 0.632 in.
Product Attributes - Locks Included: No
Product Attributes - Valve Stem Seals Included: No
Product Attributes - Valve Springs Coated: No
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold as a set of 16.

Reference Information

Brand Name/s	Manley Performance
StreetFX SKU	man221450-16
SFX Item ID	4060414
Supplier Item Code	4060414
Manufacturer SKU	221450-16
Manufacturer UPC	807298033457

Compatibility

Application Data

Installed Height (in.) 2.200 in.
Seat Pressure at Installed Height (lbs.) 370 lbs.
Open Height (in.)(application) 1.200
Open Pressure (lbs.) 1,070 lbs.

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