Manley Circle Track Roller Polished NexTek Series Valve Springs

SKU: MAN221441P-16

Valve Springs

MAN Valve Spring Kits...

Manley Performance

Manley Circle Track Roller Polished NexTek Series Valve Springs

SKU: MAN221441P-16

Valve Springs

MAN Valve Spring Kits...

LOW STOCK! Est Ship 4-7 days. In stock at 1 location (2 available)

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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 17:07:34

Features

No degradation of spring pressure in the later stages of a race
Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
Tested by leading engine builders and are confirmed to be the best performing valve springs on the market today

Specifications

Product Attributes - Brand: Manley
Product Attributes - Manufacturer's Part Number: 221441P-16
Product Attributes - Part Type: Valve Springs
Product Attributes - Product Line: Manley NexTek Valve Springs
Product Attributes - UPC: 807298020037
Product Attributes - Valve Spring Style: Standard
Product Attributes - Number of Springs Per Valve: Dual
Product Attributes - Maximum Valve Lift (in.): 0.730 in.
Product Attributes - Retainers Included: No
Product Attributes - Outside Diameter of Outer Spring (in.): 1.570 in.
Product Attributes - Coil Bind Height (in.): 1.215 in.
Product Attributes - Damper Spring Included: Yes
Product Attributes - Spring Rate (lbs./in.): 575 lbs./in.
Product Attributes - Inside Diameter of Inner Spring (in.): 0.750 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.
Product Attributes - Notes: Polished.

Reference Information

Brand Name/s	Manley Performance
StreetFX SKU	man221441P-16
SFX Item ID	4060496
Supplier Item Code	4060496
Manufacturer SKU	221441P-16
Manufacturer UPC	807298020037