Manley Alcohol/Fuel Classes/ProMod NexTek Series High Performance Valve Springs

SKU: MAN221461-16

Valve Springs

MAN Valve Spring Kits...

Manley Performance

Manley Alcohol/Fuel Classes/ProMod NexTek Series High Performance Valve Springs

SKU: MAN221461-16

Valve Springs

MAN Valve Spring Kits...

LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.

We accept

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 17:06:37

Features

Accepts smaller, lighter retainers which also promotes higher revs
Dual spring design reduces friction, which generates less heat and translates into greatly reduced load loss
Extensively tested on the Spintron, dyno and race track (including blown nitro engines) and proven highly effective
Higher natural frequency and lower active mass provides improved valvetrain control and higher RPM potential
Smaller diameter, lightweight dual design allows engine to rev higher with improved valve train control
Ultra clean, high tensile strength chrome silicon material

Specifications

Product Attributes - Brand: Manley
Product Attributes - Manufacturer's Part Number: 221461-16
Product Attributes - Part Type: Valve Springs
Product Attributes - Product Line: Manley NexTek Valve Springs
Product Attributes - UPC: 807298024035
Product Attributes - Valve Spring Style: Standard
Product Attributes - Number of Springs Per Valve: Dual
Product Attributes - Maximum Valve Lift (in.): 1.000 in.
Product Attributes - Retainers Included: No
Product Attributes - Outside Diameter of Outer Spring (in.): 1.540 in.
Product Attributes - Coil Bind Height (in.): 1.215 in.
Product Attributes - Damper Spring Included: No
Product Attributes - Spring Rate (lbs./in.): 964 lbs./in.
Product Attributes - Inside Diameter of Inner Spring (in.): 0.710 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	man221461-16
SFX Item ID	4061187
Supplier Item Code	4061187
Manufacturer SKU	221461-16
Manufacturer UPC	807298024035