Manley Performance

Manley NexTek Drag Race Polished Valve Springs 1.677in OD 1.000in Lift 350lb Installed Set of 16

SKU: man221449P-16 UPC: 807298023861
In stock - 1 items available
$1,236.43

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This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

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Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase. Orders shipping to restricted areas may be canceled.

Manley NexTek Drag Race valve springs in a polished triple configuration, built for Sportsman and Bracket Classes applications. The outer spring measures 1.677 in. O.D. and the set is rated to 1.000 in. maximum valve lift.

Key Features

  • Manufactured from specially processed high tensile chrome silicon steel
  • Shot peened to MIL spec for maximum fatigue life
  • Multi-step heat treating minimizes load loss over a run
  • Computer-aided design work targets valve bounce and valvetrain separation
  • Tightly controlled open end flatness reduces valve stem side loading
  • Polished finish reduces friction and helps minimize load loss

Fitment

  • Recommended use: Sportsman and Bracket Classes

Product Details

  • Series: Manley NexTek Drag Race
  • Spring Type: Polished triple
  • Maximum Valve Lift: 1.000 in.
  • Outer Spring O.D.: 1.677 in.
  • Inner Spring I.D.: .632 in.
  • Installed Pressure: 350 @ 2.200 lbs.
  • Open Pressure: 1070 @ 1.200 lbs.
  • Spring Rate: 720 lbs./in.
  • Coil Bind Height: 1.142 in.
  • Weight: 195 grams each
  • Quantity: Set of 16
  • Manufacturer Part Number: 221449P-16

Shipping Height: 3.63

Shipping Length: 15.38

Shipping Width: 3.63

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