Free Shipping & Handling on Orders Over $95 - Order by 11pm EST for Same-Day Shipping!
Shop By Vehicle
Shop By
All Categories

Gift Certificates
My Account
E-Mail Signup
Catalog Request

Manley 261425

NexTek Drag Race Springs & Titanium Retainer Kit 1.640" O.D. Springs, p/n 660-221425-16

Manley 261425
Representative Image
Product images may differ from actual product appearance.

Part Number: 660-261425

NexTek Drag Race Springs & Titanium Retainer Kit
  • 1.640'' O.D. Springs, p/n 660-221425-16
  • 10-Degree Titanium Retainer, p/n 660-23640-16
  • 16/pkg.
  • $538.99

    from Manufacturer
    FREE Shipping
    Manley 261425 NexTek Drag Race Springs & Titanium Retainer Kit 1.640" O.D. Springs, p/n 660-221425-16 $538.99

    Manley 261425 Details

    1.640'' O.D. Double Valve Springs

    Includes Manley 10° Titanium retainers (part number, 660-23640-16).

  • Type of Spring: Double without Damper
  • Color Code: 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:

    Manufacturer's Part Number:

    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.

  • 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

  • Items You Need