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Manley NexTek Drag Race Valve Springs for SuperStock and Competition Eliminator 1.500in OD Set of 16

SKU: MAN221456-16

Valve Springs

MAN Valve Spring Kits...

Manley NexTek Drag Race Valve Springs for SuperStock and Competition Eliminator 1.500in OD Set of 16

SKU: MAN221456-16

Valve Springs

MAN Valve Spring Kits...

A$1,713.97
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our 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: 2026-10-13 21:34:18

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
221456-16
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Springs
Product Attributes - UPC
807298039565
Product Attributes - Valve Spring Style
Standard
Product Attributes - Number of Springs Per Valve
Dual
Product Attributes - Maximum Valve Lift (in.)
0.900 in.
Product Attributes - Retainers Included
No
Product Attributes - Outside Diameter of Outer Spring (in.)
1.500 in.
Product Attributes - Coil Bind Height (in.)
1.130 in.
Product Attributes - Damper Spring Included
No
Product Attributes - Spring Rate (lbs./in.)
800 lbs./in.
Product Attributes - Inside Diameter of Inner Spring (in.)
0.719 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 man221456-16
SFX Item ID 4061167
Supplier Item Code 4061167
Manufacturer SKU 221456-16
Manufacturer UPC 807298039565
Alternative References 1.500in

Compatibility

Application Data
  • Installed Height (in.)2.100 in.
    Seat Pressure at Installed Height (lbs.)316 lbs.
    Open Height (in.)(application)1.200
    Open Pressure (lbs.)1,036 lbs.

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