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Manley 221425P-1

Manley Polished NexTek Drag Race Valve Spring 1.640" O.D.

660-221425P-1

made in usa
Ships directly from the manufacturer

$34.99
Manley Polished NexTek Drag Race Valve Spring 1.640" O.D. $34.99
QTY
Polished NexTek Drag Race Valve Spring
  • 1.640'' O.D.
  • 0.860'' I.D.
  • 604 lbs./in. Spring Rate
  • 280 @ 2.100'' Installed
  • 795 @ 1.250'' Open
  • 0.900'' Max Valve Lift
  • 1.150'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • Manley 221425P-1 Details

    1.640'' O.D. Double Valve Springs

  • Polished Finish
  • Type of Spring: Double without Damper
  • Color Code: Polished Finish (Green Stripe)
  • Installed Height and Pressure: 2.100'' @ 280 lbs./in.
  • Open Height and Pressure: 1.250'' @ 795 lbs./in.
  • Spring Rate: 604 lbs./in.
  • O.D. of Outer Spring: 1.640''
  • I.D. of Outer Spring: 1.185''
  • I.D. of Middle Spring: N/A
  • I.D. of Inner Spring: 0.860''
  • Coil Bind height: 1.150''
  • Weight: 160 grams
  • Damper Included: No

    Click Here to see 660-221425 Valve Spring Load Chart

  • Specifications:

    Installed Height (in)
    2.100 in.
    Open Height (in)
    1.250 in.
    Open Pressure (lbs)
    795 lbs.
    Seat Pressure at Installed Height (lbs)
    280 lbs.
    Number of Springs Per Valve
    Dual
    Coil Bind Height (in)
    1.150 in.
    Damper Spring Included
    No
    Spring Rate (lbs/in)
    604 lbs./in.
    Quantity
    Sold individually
    Manufacturer's Part Number:
    221425P-1
    Shipping Weight:
    0.25
    Package Height:
    2.75
    Package Depth:
    4.5
    Package Width:
    2.75

    NexTek Valve Springs...Better By Design!

    Manley NexTek (Next Generation) Valve Springs were developed over a decade ago and still offer unequaled performance. The NexTek springs were developed to satisfy the demands of top level engine builders who demanded the absolute highest quality valve springs. Manley Nextek springs can be found in drag race applications ranging from Bracket racers to Top Fuel, in oval track engines across the country on the street and strip.

    Features:
  • Higher natural frequency provides improved valvetrain control and higher RPM potential
  • All springs are triple design springs except for 660-221424, 660-221425 & 660-221454 which are double design without damper
  • Extensively tested on the Spintron, dyno and race track (including blown nitro engines) and proven highly effective
  • Smaller diameter, lightweight dual design allows engine to rev higher with improved valve train control
  • Better valvetrain stability and component life
  • Ultra clean, high tensile strength chrome silicon steel
  • Polish Finish surface reduces friction, improves fatigue life and minimize load loss.
  • Ideal loads for multiple applications with minimal load loss

    Click Here to see Valve Springs Load Chart

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